Edgar Filing: Nuveen AMT-Free Municipal Credit Income Fund

Nuveen AMT-Free Municipal Credit Income Fund

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT INVESTMENT COMPANY

Investment Company Act file number 811-09475

Nuveen AMT-Free Municipal Credit Income Fund

(Exact name of registrant as specified in charter)

Nuveen Investments

333 West Wacker Drive, Chicago, Illinois 60606

(Address of principal executive offices) (Zip code)

Gifford R. Zimmerman

Vice President and Secretary

333 West Wacker Drive, Chicago, Illinois 60606

(Name and address of agent for service)

Registrant’s telephone number, including area code: 312-917-7700

Date of fiscal year end: October 31

Date of reporting period: July 31, 2017

Form N-Q is to be used by management investment companies, other than small business investment companies registered on Form N-5 (§§ 239.24 and 274.5 of this chapter), to file reports with the Commission, not later than 60 days after the close of the first and third fiscal quarters, pursuant to rule 30b1-5 under the Investment Company Act of 1940 (17 CFR 270.30b1-5). The Commission may use the information provided on Form N-Q in its regulatory, disclosure review, inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-Q, and the Commission will make this information public. A registrant is not required to respond to the collection of information contained in Form N-Q unless the Form displays a currently valid Office of Management and Budget (“OMB”) control number. Please direct comments concerning the accuracy of the information collection burden estimate and any suggestions for reducing the burden to the Secretary, Securities and Exchange Commission, 450 Fifth Street, NW, Washington, DC 20549-0609. The OMB has reviewed this collection of information under the clearance requirements of 44 U.S.C. § 3507.

Item 1. Schedule of Investments

NVG

Nuveen AMT-Free Municipal Credit Income Fund

Portfolio of Investments

July 31, 2017 (Unaudited)

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	LONG-TERM INVESTMENTS – 154.3% (99.6% of Total Investments)
	MUNICIPAL BONDS – 154.3% (99.6% of Total Investments)
	Alabama – 1.7% (1.1% of Total Investments)
$ 3,645	Alabama Private Colleges and University Facilities Authority, Limited Obligation Bonds, University of Mobile Project, Series 2015A, 6.000%, 9/01/45	9/25 at 100.00	N/R	$3,726,648
30,355	Lower Alabama Gas District, Alabama, Gas Project Revenue Bonds, Series 2016A, 5.000%, 9/01/46	No Opt. Call	A3	38,168,377
8,100	Mobile Spring Hill College Educational Building Authority, Alabama, Revenue Bonds, Spring Hill College Project, Series 2015, 5.875%, 4/15/45	4/25 at 100.00	N/R	8,234,541
	Opelika Utilities Board, Alabama, Utility Revenue Bonds, Series 2011B:
1,250	4.000%, 6/01/29 – AGM Insured	6/21 at 100.00	Aa3	1,304,400
1,000	4.250%, 6/01/31 – AGM Insured	6/21 at 100.00	Aa3	1,047,310
	The Improvement District of the City of Mobile - McGowin Park Project, Alabama, Sales Tax Revenue Bonds, Series 2016A:
1,000	5.250%, 8/01/30	8/26 at 100.00	N/R	1,037,890
1,300	5.500%, 8/01/35	8/26 at 100.00	N/R	1,344,031
46,650	Total Alabama			54,863,197
	Alaska – 0.6% (0.4% of Total Investments)
	Northern Tobacco Securitization Corporation, Alaska, Tobacco Settlement Asset-Backed Bonds, Series 2006A:
7,010	5.000%, 6/01/32	10/17 at 100.00	B3	6,785,540
13,965	5.000%, 6/01/46	10/17 at 100.00	B3	13,360,315
20,975	Total Alaska			20,145,855
	Arizona – 2.9% (1.9% of Total Investments)
4,230	Apache County Industrial Development Authority, Arizona, Pollution Control Revenue Bonds, Tucson Electric Power Company, Series 20102A, 4.500%, 3/01/30	3/22 at 100.00	A-	4,563,282
10,000	Arizona Sports and Tourism Authority, Tax Revenue Bonds, Multipurpose Stadium Facility Project, Refunding Senior Series 2012A, 5.000%, 7/01/31	7/22 at 100.00	A	10,867,200
3,000	Arizona State, Certificates of Participation, Department of Administration Series 2010B, 5.000%, 10/01/29 – AGC Insured	4/20 at 100.00	Aa3	3,273,810
	Arizona State, Certificates of Participation, Series 2010A:
1,200	5.250%, 10/01/28 – AGM Insured	10/19 at 100.00	Aa3	1,303,068
1,500	5.000%, 10/01/29 – AGM Insured	10/19 at 100.00	Aa3	1,619,175
7,070	Arizona State, State Lottery Revenue Bonds, Series 2010A, 5.000%, 7/01/29 – AGC Insured	1/20 at 100.00	A1	7,715,067
3,390	Cahava Springs Revitalization District, Cave Creek, Arizona, Special Assessment Bonds, Series 2017A, 7.000%, 7/01/41	7/27 at 100.00	N/R	3,500,989
7,780	Phoenix Civic Improvement Corporation, Arizona, Airport Revenue Bonds, Junior Lien Series 2010A, 5.000%, 7/01/40	7/20 at 100.00	A+	8,538,939
2,350	Phoenix Civic Improvement Corporation, Arizona, Airport Revenue Bonds, Senior Lien Series 2008A, 5.000%, 7/01/33	7/18 at 100.00	AA-	2,430,041

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Arizona (continued)
	Phoenix Civic Improvement Corporation, Arizona, Revenue Bonds, Civic Plaza Expansion Project, Series 2005B:
$ 6,000	5.500%, 7/01/37 – FGIC Insured	No Opt. Call	AA	$7,858,440
8,755	5.500%, 7/01/39 – FGIC Insured	No Opt. Call	AA	11,587,505
	Phoenix Industrial Development Authority, Arizona, Education Facility Revenue Bonds, Basis Schools, Inc. Projects, Series 2016A:
620	5.000%, 7/01/35	7/25 at 100.00	BB	648,836
1,025	5.000%, 7/01/46	7/25 at 100.00	BB	1,060,158
2,065	Phoenix Industrial Development Authority, Arizona, Multifamily Housing Revenue Bonds, Deer Valley Veterans Assisted Living Project, Series 2016A, 5.125%, 7/01/36	7/24 at 101.00	N/R	2,002,885
	Pima County Industrial Development Authority, Arizona, Education Facility Revenue and Refunding Bonds, Edkey Charter Schools Project, Series 2013:
490	6.000%, 7/01/33	7/20 at 102.00	BB	446,135
610	6.000%, 7/01/43	7/20 at 102.00	BB	522,245
350	6.000%, 7/01/48	7/20 at 102.00	BB	296,492
1,375	Pima County Industrial Development Authority, Arizona, Education Facility Revenue Bonds, Edkey Charter Schools Project, Series 2014A, 7.375%, 7/01/49	7/20 at 102.00	BB	1,277,499
	Pima County Industrial Development Authority, Arizona, Education Facility Revenue Bonds, Edkey Charter Schools Project, Series 2016:
1,130	5.250%, 7/01/36	7/26 at 100.00	BB	978,670
1,850	5.375%, 7/01/46	7/26 at 100.00	BB	1,549,486
2,135	5.500%, 7/01/51	7/26 at 100.00	BB	1,782,405
885	Pima County Industrial Development Authority, Arizona, Education Facility Revenue Bonds, San Tan Montessori School Project, Series 2016, 6.500%, 2/01/48	2/24 at 100.00	N/R	907,576
105	Pima County Industrial Development Authority, Arizona, Education Revenue Bonds, Noah Webster Schools Pima Project, Series 2014A, 7.250%, 7/01/39	7/20 at 102.00	BB	98,107
1,000	Pima County Industrial Development Authority, Arizona, Revenue Bonds, Tucson Electric Power Company, Series 2010A, 5.250%, 10/01/40	10/20 at 100.00	A-	1,072,300
	Salt Verde Financial Corporation, Arizona, Senior Gas Revenue Bonds, Citigroup Energy Inc. Prepay Contract Obligations, Series 2007:
7,930	5.000%, 12/01/32	No Opt. Call	BBB+	9,435,986
5,310	5.000%, 12/01/37	No Opt. Call	BBB+	6,409,489
800	The Industrial Development Authority of the County of Maricopa, Arizona, Education Revenue Bonds, Reid Traditional School Projects, Series 2016, 5.000%, 7/01/47	7/26 at 100.00	Baa3	833,264

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Arizona (continued)
$ 2,000	Yavapai County Industrial Development Authority, Arizona, Hospital Revenue Bonds, Yavapai Regional Medical Center, Series 2013A, 5.250%, 8/01/33	8/23 at 100.00	Baa1	$ 2,226,840
84,955	Total Arizona			94,805,889
	Arkansas – 0.2% (0.1% of Total Investments)
	Arkansas Development Finance Authority, Tobacco Settlement Revenue Bonds, Arkansas Cancer Research Center Project, Series 2006:
2,500	0.000%, 7/01/36 – AMBAC Insured	No Opt. Call	Aa2	1,199,525
20,460	0.000%, 7/01/46 – AMBAC Insured	No Opt. Call	Aa2	5,978,821
22,960	Total Arkansas			7,178,346
	California – 17.8% (11.5% of Total Investments)
	Alameda Corridor Transportation Authority, California, Revenue Bonds, Refunding Subordinate Lien Series 2004A:
45	0.000%, 10/01/20 – AMBAC Insured	No Opt. Call	Baa2	42,571
2,120	0.000%, 10/01/20 – AMBAC Insured (ETM)	No Opt. Call	Aaa	2,041,666
6,135	Alhambra Unified School District, Los Angeles County, California, General Obligation Bonds, Capital Appreciation Series 2009B, 0.000%, 8/01/30 – AGC Insured	No Opt. Call	AA	4,092,229
12,550	Anaheim Public Financing Authority, California, Lease Revenue Bonds, Public Improvement Project, Series 1997C, 0.000%, 9/01/35 – AGM Insured	No Opt. Call	A2	6,110,344
4,100	Antelope Valley Healthcare District, California, Revenue Bonds, Series 2016A, 5.000%, 3/01/41	3/26 at 100.00	Ba3	4,041,165
5,000	Bay Area Toll Authority, California, Revenue Bonds, San Francisco Bay Area Toll Bridge, Series 2013S-4, 5.000%, 4/01/38	4/23 at 100.00	A1	5,731,850
	California County Tobacco Securitization Agency, Tobacco Settlement Asset-Backed Bonds, Los Angeles County Securitization Corporation, Series 2006A:
3,275	5.450%, 6/01/28	12/18 at 100.00	B3	3,315,839
2,975	5.650%, 6/01/41	12/18 at 100.00	B2	2,992,285
13,465	California Educational Facilities Authority, Revenue Bonds, Stanford University Series 2016U-7, 5.000%, 6/01/46 (UB) (4)	No Opt. Call	AAA	18,302,167
10,040	California Educational Facilities Authority, Revenue Bonds, Stanford University, Series 2007, 5.000%, 3/15/39 (UB) (4)	No Opt. Call	AAA	13,226,696
25,085	California Educational Facilities Authority, Revenue Bonds,Stanford University, Refunding Series 2014U-6, 5.000%, 5/01/45 (UB) (4)	No Opt. Call	AAA	33,939,503
10,000	California Health Facilities Financing Authority, Revenue Bonds, Lucile Salter Packard Children's Hospital, Series 2012A, 5.000%, 8/15/51	8/22 at 100.00	A+	11,131,400
1,600	California Health Facilities Financing Authority, Revenue Bonds, Saint Joseph Health System, Series 2013A, 5.000%, 7/01/37	7/23 at 100.00	AA-	1,818,688
6,665	California Health Facilities Financing Authority, Revenue Bonds, Stanford Hospitals and Clinics, Series 2015A, 5.000%, 8/15/54 (UB) (4)	8/25 at 100.00	AA-	7,534,183
	California Health Facilities Financing Authority, Revenue Bonds, Stanford Hospitals and Clinics, Tender Option Bond Trust 2016-XG0049:
1,555	8.642%, 8/15/51 (IF) (4)	8/22 at 100.00	AA-	1,922,151
1,650	8.648%, 8/15/51 (IF) (4)	8/22 at 100.00	AA-	2,039,928
4,075	8.648%, 8/15/51 (IF) (4)	8/22 at 100.00	AA-	5,038,004
5,000	California Health Facilities Financing Authority, Revenue Bonds, Sutter Health, Series 2013A, 5.000%, 8/15/52	8/23 at 100.00	AA-	5,519,350

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	California (continued)
	California Municipal Finance Authority, Charter School Revenue Bonds, Palmdale Aerospace Academy Project, Series 2016A:
$ 3,065	5.000%, 7/01/31	7/26 at 100.00	BB	$3,241,023
1,000	5.000%, 7/01/36	7/26 at 100.00	BB	1,037,840
555	5.000%, 7/01/41	7/26 at 100.00	BB	571,889
195	5.000%, 7/01/46	7/26 at 100.00	BB	200,394
	California Municipal Finance Authority, Education Revenue Bonds, American Heritage Foundation Project, Series 2016A:
260	5.000%, 6/01/36	6/26 at 100.00	BBB-	283,803
435	5.000%, 6/01/46	6/26 at 100.00	BBB-	469,400
2,335	California Municipal Finance Authority, Revenue Bonds, Eisenhower Medical Center, Series 2010A, 5.750%, 7/01/40	7/20 at 100.00	Baa2	2,649,758
4,500	California Pollution Control Financing Authority, Water Furnishing Revenue Bonds, San Diego County Water Authority Desalination Project Pipeline, Series 2012, 5.000%, 11/21/45	10/17 at 100.00	Baa3	4,507,830
2,050	California Public Finance Authority, Revenue Bonds, Henry Mayo Newhall Hospital, Series 2017, 5.000%, 10/15/47	10/26 at 100.00	BBB-	2,241,142
735	California School Finance Authority, Charter School Revenue Bonds, Downtown College Prep - Obligated Group, Series 2016, 5.000%, 6/01/46	6/26 at 100.00	N/R	747,135
715	California School Finance Authority, Charter School Revenue Bonds, Rocketship Education - Obligated Group, Series 2016A, 5.000%, 6/01/36	6/25 at 100.00	N/R	730,759
895	California School Finance Authority, Charter School Revenue Bonds, Rocketship Education - Obligated Group, Series 2017A, 5.125%, 6/01/47	6/26 at 100.00	N/R	913,876
80	California State, General Obligation Bonds, Series 2002, 5.000%, 10/01/32 – NPFG Insured	10/17 at 100.00	AA-	80,235
5	California State, General Obligation Bonds, Series 2004, 5.000%, 4/01/31 – AMBAC Insured	10/17 at 100.00	AA-	5,015
	California State, General Obligation Bonds, Various Purpose Series 2010:
3,500	5.250%, 3/01/30	3/20 at 100.00	AA-	3,870,335
10,000	5.500%, 11/01/35	11/20 at 100.00	AA-	11,345,100
12,710	California Statewide Communities Development Authority, California, Revenue Bonds, Loma Linda University Medical Center, Series 2014A, 5.500%, 12/01/54	12/24 at 100.00	BB	13,986,974
66,105	California Statewide Communities Development Authority, California, Revenue Bonds, Loma Linda University Medical Center, Series 2016A, 5.250%, 12/01/56	6/26 at 100.00	BB	72,148,319
4,000	California Statewide Communities Development Authority, Revenue Bonds, Huntington Memorial Hospital, Refunding Series 2014B, 4.000%, 7/01/39	7/24 at 100.00	A-	4,082,360
7,000	California Statewide Communities Development Authority, Revenue Bonds, Sutter Health, Series 2011A, 6.000%, 8/15/42	8/20 at 100.00	AA-	7,950,180
	California Statewide Community Development Authority, Revenue Bonds, Daughters of Charity Health System, Series 2005A:
1,535	5.750%, 7/01/30 (5)	10/17 at 100.00	CCC	1,532,145
4,430	5.750%, 7/01/35 (5)	10/17 at 100.00	CCC	4,352,032
3,600	California Statewide Community Development Authority, Revenue Bonds, St. Joseph Health System, Series 2007A, 5.750%, 7/01/47 (Pre-refunded 7/01/18) – FGIC Insured	7/18 at 100.00	AA- (6)	3,764,628
5,000	Clovis Unified School District, Fresno County, California, General Obligation Bonds, Series 2001A, 0.000%, 8/01/25 – NPFG Insured (ETM)	No Opt. Call	A3 (6)	4,280,500

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	California (continued)
$ 3,400	Coachella Valley Unified School District, Riverside County, California, General Obligation Bonds, Election 2005 Series 2010C, 0.000%, 8/01/33 – AGM Insured	No Opt. Call	A2	$1,909,066
14,375	Corona-Norco Unified School District, Riverside County, California, General Obligation Bonds, Capital Appreciation, Election 2006 Refunding Series 2009C, 0.000%, 8/01/39 – AGM Insured	No Opt. Call	AA	5,875,494
	El Rancho Unified School District, Los Angeles County, California, General Obligation Bonds, Election 2010 Series 2011A:
2,615	0.000%, 8/01/31 – AGM Insured (7)	8/28 at 100.00	A1	2,541,283
3,600	0.000%, 8/01/34 – AGM Insured (7)	8/28 at 100.00	A1	3,481,884
	Foothill/Eastern Transportation Corridor Agency, California, Toll Road Revenue Bonds, Refunding Senior Lien Series 2015A:
3,960	0.000%, 1/15/34 – AGM Insured	No Opt. Call	BBB-	2,091,751
5,000	0.000%, 1/15/35 – AGM Insured	No Opt. Call	BBB-	2,526,050
	Foothill/Eastern Transportation Corridor Agency, California, Toll Road Revenue Bonds, Refunding Series 2013A:
910	0.000%, 1/15/42	1/31 at 100.00	BBB-	785,194
3,610	5.750%, 1/15/46	1/24 at 100.00	BBB-	4,158,215
6,610	6.000%, 1/15/49	1/24 at 100.00	BBB-	7,630,386
2,425	Fullerton Public Financing Authority, California, Tax Allocation Revenue Bonds, Series 2005, 5.000%, 9/01/27 – AMBAC Insured	9/17 at 100.00	A	2,432,906
	Golden State Tobacco Securitization Corporation, California, Tobacco Settlement Asset-Backed Bonds, Series 2007A-1:
25,950	5.000%, 6/01/33	10/17 at 100.00	B3	25,950,000
8,565	5.125%, 6/01/47	10/17 at 100.00	B-	8,459,907
8,830	5.750%, 6/01/47	10/17 at 100.00	B3	8,830,000
	Kern Community College District, California, General Obligation Bonds, Safety, Repair & Improvement, Election 2002 Series 2006:
5,600	0.000%, 11/01/24 – AGM Insured	No Opt. Call	AA	4,834,760
5,795	0.000%, 11/01/25 – AGM Insured	No Opt. Call	AA	4,819,412
1,195	Lincoln Public Financing Authority, Placer County, California, Twelve Bridges Limited Obligation Revenue Bonds, Refunding Series 2011A, 4.375%, 9/02/25 – AGM Insured	9/21 at 100.00	AA	1,299,001
7,575	Mount San Antonio Community College District, Los Angeles County, California, General Obligation Bonds, Election of 2008, Series 2013A, 0.000%, 8/01/43 (7)	8/35 at 100.00	AA	6,180,139
3,310	M-S-R Energy Authority, California, Gas Revenue Bonds, Citigroup Prepay Contracts, Series 2009B, 6.500%, 11/01/39	No Opt. Call	BBB+	4,732,141
	Oceanside Unified School District, San Diego County, California, General Obligation Bonds, Capital Appreciation, 2008 Election Series 2009A:
5,905	0.000%, 8/01/26 – AGC Insured	No Opt. Call	Aa3	4,748,860
2,220	0.000%, 8/01/28 – AGC Insured	No Opt. Call	Aa3	1,626,017
2,340	Ontario Redevelopment Financing Authority, San Bernardino County, California, Revenue Bonds, Redevelopment Project 1, Series 1993, 5.850%, 8/01/22 – NPFG Insured (ETM)	8/17 at 100.00	A (6)	2,453,022
4,000	Orange County, California, Special Tax Bonds, Community Facilities District 2015-1 Esencia Village, Series 2015A, 4.250%, 8/15/38	8/25 at 100.00	N/R	4,211,440
5,000	Palomar Pomerado Health Care District, California, Certificates of Participation, Series 2010, 6.000%, 11/01/30	11/20 at 100.00	Ba1	5,399,200

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	California (continued)
$ 3,700	Palomar Pomerado Health, California, General Obligation Bonds, Capital Appreciation, Election of 2004, Series 2007A, 0.000%, 8/01/25 – NPFG Insured	No Opt. Call	A	$2,987,528
7,875	Palomar Pomerado Health, California, General Obligation Bonds, Series 2009A, 0.000%, 8/01/38 – AGC Insured (7)	8/29 at 100.00	A2	9,486,540
9,145	Pittsburg Redevelopment Agency, California, Tax Allocation Bonds, Los Medanos Community Development Project, Series 1999, 0.000%, 8/01/30 – AMBAC Insured	No Opt. Call	A	5,803,234
4,150	Placentia-Yorba Linda Unified School District, Orange County, California, Certificates of Participation, Refunding Series 2011, 6.000%, 10/01/28 – AGM Insured	10/25 at 100.00	A2	4,904,013
6,000	Redlands Unified School District, San Bernardino County, California, General Obligation Bonds, Series 2003, 5.000%, 7/01/26 – AGM Insured	1/17 at 100.00	A2	6,018,300
670	Riverside County Transportation Commission, California, Toll Revenue Senior Lien Bonds, Series 2013A, 5.750%, 6/01/48	6/23 at 100.00	BBB-	759,190
	San Clemente, California, Special Tax Revenue Bonds, Community Facilities District 2006-1 Marblehead Coastal, Series 2015:
495	5.000%, 9/01/40	9/25 at 100.00	N/R	546,990
920	5.000%, 9/01/46	9/25 at 100.00	N/R	1,011,641
1,830	San Diego Public Facilities Financing Authority, California, Water Utility Revenue Bonds, Tender Option Bond Trust 2015-XF0098, 17.693%, 8/01/39 (Pre-refunded 8/01/19) (IF)	8/19 at 100.00	AA- (6)	2,495,699
4,000	San Francisco Airports Commission, California, Revenue Bonds, San Francisco International Airport, Governmental Purpose, Second Series 2013B, 5.000%, 5/01/43	5/23 at 100.00	A+	4,454,080
66,685	San Joaquin Hills Transportation Corridor Agency, Orange County, California, Senior Lien Toll Road Revenue Bonds, Series 1993, 0.000%, 1/01/21 (ETM)	No Opt. Call	AA+ (6)	63,926,908
	San Joaquin Hills Transportation Corridor Agency, Orange County, California, Toll Road Revenue Bonds, Refunding Senior Lien Series 2014A:
2,680	5.000%, 1/15/44	1/25 at 100.00	BBB	2,967,510
8,275	5.000%, 1/15/50	1/25 at 100.00	BBB	9,086,033
7,210	San Joaquin Hills Transportation Corridor Agency, Orange County, California, Toll Road Revenue Bonds, Refunding Series 1997A, 0.000%, 1/15/23 – NPFG Insured	No Opt. Call	BBB	6,117,397
37,040	San Jose Redevelopment Agency, California, Tax Allocation Bonds, Merged Area Redevelopment Project, Series 2006C, 4.250%, 8/01/30 – NPFG Insured	8/17 at 100.00	A	37,106,301
4,175	San Mateo County Community College District, California, General Obligation Bonds, Series 2006C, 0.000%, 9/01/30 – NPFG Insured	No Opt. Call	AAA	2,881,877
4,325	San Ysidro School District, San Diego County, California, General Obligation Bonds, 1997 Election Series 2012G, 0.000%, 8/01/34 – AGM Insured	No Opt. Call	AA	2,330,699
5,690	San Ysidro School District, San Diego County, California, General Obligation Bonds, Refunding Series 2015, 0.000%, 8/01/42	No Opt. Call	A1	1,777,101
	Santa Ana Financing Authority, California, Lease Revenue Bonds, Police Administration and Housing Facility, Series 1994A:
5,625	6.250%, 7/01/24 – NPFG Insured (ETM)	No Opt. Call	A3 (6)	6,887,644
5,625	6.250%, 7/01/24	No Opt. Call	A3	6,924,431
3,500	Saugus Union School District, Los Angeles County, California, General Obligation Bonds, Series 2006, 0.000%, 8/01/23 – FGIC Insured	No Opt. Call	A+	3,142,160
4,495	Stockton-East Water District, California, Certificates of Participation, Refunding Series 2002B, 0.000%, 4/01/28 – FGIC Insured	10/17 at 100.00	A3	2,366,168
610	Temecula Public Financing Authority, California, Special Tax Bonds, Community Facilities District 16-01, Series 2017, 6.250%, 9/01/47	9/27 at 100.00	N/R	635,333

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	California (continued)
	Tobacco Securitization Authority of Northern California, Tobacco Settlement Asset-Backed Bonds, Series 2005A-1:
$ 1,175	4.750%, 6/01/23	10/17 at 100.00	B+	$1,177,397
1,500	5.500%, 6/01/45	10/17 at 100.00	B-	1,471,380
	Tobacco Securitization Authority of Southern California, Tobacco Settlement Asset-Backed Bonds, San Diego County Tobacco Asset Securitization Corporation, Senior Series 2006A:
1,105	4.750%, 6/01/25	12/17 at 100.00	BBB	1,112,801
5,865	5.125%, 6/01/46	12/17 at 100.00	B2	5,840,954
587,195	Total California			585,028,128
	Colorado – 9.1% (5.9% of Total Investments)
	Arkansas River Power Authority, Colorado, Power Revenue Bonds, Series 2006:
750	5.250%, 10/01/32 – SYNCORA GTY Insured	10/17 at 100.00	BBB-	751,388
1,080	5.250%, 10/01/40 – SYNCORA GTY Insured	10/17 at 100.00	BBB-	1,081,858
	Base Village Metropolitan District 2, Colorado, General Obligation Bonds, Refunding Series 2016A:
890	5.500%, 12/01/36	12/21 at 103.00	N/R	914,226
1,175	5.750%, 12/01/46	12/21 at 103.00	N/R	1,210,285
1,100	Belleview Station Metropolitan District 2, Denver City and County, Colorado, General Obligation Bonds, Limited Tax Convertible to Unlimited Tax Refunding & Improvement Series 2017, 5.000%, 12/01/36	12/21 at 103.00	N/R	1,136,740
3,410	Canyons Metropolitan District 5, Douglas County, Colorado, Limited Tax General Obligation and Special Revenue Bonds, Refunding & Improvement Series 2017A, 6.125%, 12/01/47	12/22 at 103.00	N/R	3,441,747
1,690	Canyons Metropolitan District 6, Douglas County, Colorado, Limited Tax General Obligation and Special Revenue Bonds, Refunding & Improvement Series 2017A, 6.125%, 12/01/47	12/22 at 103.00	N/R	1,698,028
	Centerra Metropolitan District 1, Loveland, Colorado, Special Revenue Bonds, Refunding & Improvement Series 2017:
1,140	5.000%, 12/01/37	12/22 at 103.00	N/R	1,172,387
5,265	5.000%, 12/01/47	12/22 at 103.00	N/R	5,357,980
195	Central Platte Valley Metropolitan District, Colorado, General Obligation Bonds, Refunding Series 2014, 5.000%, 12/01/43	12/23 at 100.00	BB	201,546
1,180	Colorado Educational and Cultural Facilities Authority, Charter School Revenue Bonds, Flagstaff Academy Project, Refunding Series 2016, 3.625%, 8/01/46	8/26 at 100.00	A	1,136,859
1,165	Colorado Educational and Cultural Facilities Authority, Charter School Revenue Bonds, The Classical Academy Project, Refunding Series 2015A, 5.000%, 12/01/38	12/24 at 100.00	A	1,285,426
5,365	Colorado Educational and Cultural Facilities Authority, Charter School Revenue Bonds, Vanguard School Project, Refunding & Improvement Series 2016, 3.750%, 6/15/47	6/26 at 100.00	A	5,312,048
1,750	Colorado Educational and Cultural Facilities Authority, Charter School Revenue Bonds, Weld County School District 6 - Frontier Academy, Refunding & Improvement Series 2016, 3.250%, 6/01/46	6/26 at 100.00	A	1,584,765
	Colorado Health Facilities Authority, Colorado, Revenue Bonds, Catholic Health Initiatives, Series 2006A:
1,500	5.000%, 9/01/36	9/17 at 100.00	BBB+	1,504,425
3,680	4.500%, 9/01/38	10/17 at 100.00	BBB+	3,689,347

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Colorado (continued)
$ 3,000	Colorado Health Facilities Authority, Colorado, Revenue Bonds, Catholic Health Initiatives, Series 2011A, 5.000%, 2/01/41	2/21 at 100.00	BBB+	$3,096,090
11,520	Colorado Health Facilities Authority, Colorado, Revenue Bonds, Catholic Health Initiatives, Series 2013A, 5.250%, 1/01/45	1/23 at 100.00	BBB+	12,185,971
	Colorado Health Facilities Authority, Colorado, Revenue Bonds, Covenant Retirement Communities Inc., Refunding Series 2012B:
1,640	5.000%, 12/01/22	No Opt. Call	BBB+	1,873,306
2,895	5.000%, 12/01/23	12/22 at 100.00	BBB+	3,272,827
4,200	5.000%, 12/01/24	12/22 at 100.00	BBB+	4,701,564
	Colorado Health Facilities Authority, Colorado, Revenue Bonds, Evangelical Lutheran Good Samaritan Society Project, Series 2013:
765	5.500%, 6/01/33	6/23 at 100.00	BBB	835,357
720	5.625%, 6/01/43	6/23 at 100.00	BBB	775,253
	Colorado Health Facilities Authority, Colorado, Revenue Bonds, Evangelical Lutheran Good Samaritan Society Project, Series 2013A:
1,410	5.000%, 6/01/32	6/25 at 100.00	BBB	1,527,608
2,000	5.000%, 6/01/33	6/25 at 100.00	BBB	2,159,780
5,855	5.000%, 6/01/40	6/25 at 100.00	BBB	6,269,475
5,145	5.000%, 6/01/45	6/25 at 100.00	BBB	5,487,811
2,035	Colorado Health Facilities Authority, Colorado, Revenue Bonds, Frasier Meadows Project, Refunding & Improvement Series 2017A, 5.250%, 5/15/47	5/27 at 100.00	BB+	2,156,774
1,000	Colorado Health Facilities Authority, Colorado, Revenue Bonds, Poudre Valley Health System, Series 2005C, 5.250%, 3/01/40 – AGM Insured	9/18 at 102.00	Aa3	1,050,430
11,830	Colorado Health Facilities Authority, Colorado, Revenue Bonds, Sisters of Charity of Leavenworth Health Services Corporation, Series 2010A, 5.000%, 1/01/40	1/20 at 100.00	AA-	12,651,475
	Colorado High Performance Transportation Enterprise, C-470 Express Lanes Revenue Bonds, Senior Lien Series 2017:
635	5.000%, 12/31/47	12/24 at 100.00	BBB	702,628
5,800	5.000%, 12/31/51	12/24 at 100.00	BBB	6,381,624
5,585	5.000%, 12/31/56	12/24 at 100.00	BBB	6,117,865
500	Copperleaf Metropolitan District 2, Arapahoe County, Colorado, General Obligation Bonds, Refunding Limited Tax Convertible to Unlimited Tax Series 2015, 5.750%, 12/01/45	12/20 at 103.00	N/R	524,055
500	Copperleaf Metropolitan District 2, Colorado, General Obligation Limited Tax Bonds, Series 2006, 5.250%, 12/01/30	12/20 at 103.00	N/R	524,930
1,480	Cornerstar Metropolitan District, Arapahoe County, Colorado, General Obligation Bonds, Limited Tax Convertible to Unlimited Tax, Refunding Series 2017A, 5.250%, 12/01/47	12/22 at 103.00	N/R	1,543,788
1,275	Cornerstar Metropolitan District, Arapahoe County, Colorado, General Obligation Bonds, Limited Tax Convertible to Unlimited Tax, Refunding Series 2017B, 5.250%, 12/01/47	12/22 at 103.00	N/R	1,315,711
500	Crystal Crossing Metropolitan District, Colorado, General Obligation Limited Tax Bonds, Refunding Series 2016, 5.250%, 12/01/40	12/25 at 100.00	N/R	509,595
10,640	Denver City and County, Colorado, Airport System Revenue Bonds, Subordinate Lien Series 2013B, 5.000%, 11/15/43	11/23 at 100.00	A	11,899,350
1,070	Denver Convention Center Hotel Authority, Colorado, Revenue Bonds, Convention Center Hotel, Refunding Senior Lien Series 2016, 5.000%, 12/01/40	12/26 at 100.00	BBB-	1,207,260

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Colorado (continued)
$ 11,700	E-470 Public Highway Authority, Colorado, Senior Revenue Bonds, Capital Appreciation Series 2010A, 0.000%, 9/01/41	No Opt. Call	BBB+	$4,263,363
	E-470 Public Highway Authority, Colorado, Senior Revenue Bonds, Series 1997B:
35,995	0.000%, 9/01/23 – NPFG Insured	No Opt. Call	BBB+	31,363,883
6,525	0.000%, 9/01/26 – NPFG Insured	No Opt. Call	BBB+	5,056,483
	E-470 Public Highway Authority, Colorado, Senior Revenue Bonds, Series 2000B:
17,030	0.000%, 9/01/25 – NPFG Insured	No Opt. Call	BBB+	13,728,905
9,915	0.000%, 9/01/32 – NPFG Insured	No Opt. Call	BBB+	5,788,575
43,090	0.000%, 9/01/33 – NPFG Insured	No Opt. Call	BBB+	24,083,863
	E-470 Public Highway Authority, Colorado, Toll Revenue Bonds, Series 2004A:
20,000	0.000%, 9/01/27 – NPFG Insured	No Opt. Call	BBB+	14,783,000
1,150	0.000%, 9/01/28 – NPFG Insured	No Opt. Call	BBB+	813,590
7,000	0.000%, 9/01/34 – NPFG Insured	No Opt. Call	BBB+	3,741,920
500	Erie Highlands Metropolitan District No. 1 (In the Town of Erie), Weld County, Colorado, General Obligation Limited Tax Bonds, Series 2015A, 5.750%, 12/01/45	12/20 at 103.00	N/R	510,155
500	Flatiron Meadows Metropolitan District, Boulder County, Colorado, General Obligation Limited Tax Bonds, Series 2016, 5.125%, 12/01/46	12/21 at 103.00	N/R	501,025
590	Foothills Metropolitan District, Fort Collins, Colorado, Special Revenue Bonds, Series 2014, 6.000%, 12/01/38	12/24 at 100.00	N/R	611,511
825	Forest Trace Metropolitan District 3, Aurora City, Arapahoe County, Colorado, General Obligation Bonds, Limited Tax Convertible to Unlimited Tax, Series 2016A, 5.000%, 12/01/46	12/21 at 103.00	N/R	820,413
1,355	Great Western Park Metropolitan District 2, Broomfield City and County, Colorado, General Obligation Bonds, Series 2016A, 5.000%, 12/01/46	12/21 at 100.00	N/R	1,367,331
750	Green Gables Metropolitan District No. 1, Jefferson County, Colorado, General Obligation Bonds, Series 2016A, 5.300%, 12/01/46	12/21 at 103.00	N/R	762,833
2,500	High Plains Metropolitan District, Arapahoe County, Colorado, General Obligation Bonds, Refunding Series 2017, 4.000%, 12/01/47 – NPFG Insured	12/27 at 100.00	Baa2	2,524,175
3,740	Jefferson Center Metropolitan District 1, Arvada, Jefferson County, Colorado, Revenue Bonds, Refunding Series 2015, 5.500%, 12/01/45	12/20 at 103.00	N/R	3,749,013
	Johnstown Plaza Metropolitan District, Colorado, Special Revenue Bonds, Series 2016A:
2,325	5.250%, 12/01/36	12/21 at 103.00	N/R	2,151,880
8,955	5.375%, 12/01/46	12/21 at 103.00	N/R	8,243,794
	Lambertson Farms Metropolitan District 1, Colorado, Revenue Bonds, Refunding & Improvement Series 2015:
1,005	5.750%, 12/15/46	12/23 at 100.00	N/R	1,016,668
5,355	6.000%, 12/15/50	12/23 at 100.00	N/R	5,410,960
980	Leyden Rock Metropolitan District No. 10, In the City of Arvada, Colorado, Limited Tax General Obligation Bonds, Refunding and Improvement Series 20016A, 5.000%, 12/01/45	12/21 at 103.00	N/R	991,329
500	Littleton Village Metropolitan District No. 2, Colorado, Limited Tax General Obligation and Special Revenue Bonds, Series 2015, 5.375%, 12/01/45	12/20 at 103.00	N/R	504,900
860	Mountain Shadows Metropolitan District, Colorado, General Obligation Limited Tax Bonds, Refunding Series 2016, 5.000%, 12/01/35	12/25 at 100.00	N/R	877,561
6,180	North Range Metropolitan District 1, Adams County, Colorado, General Obligation Bonds, Series 2016B, 3.500%, 12/01/45	12/25 at 100.00	Baa1	5,826,380

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Colorado (continued)
	North Range Metropolitan District No. 2 , In the City of Commerce City, Adams County, Colorado , Limited Tax General Obligation and Special Revenue and Improvement Bonds, Refunding Series 2017A:
$ 1,000	5.625%, 12/01/37	12/22 at 103.00	N/R	$1,015,190
1,000	5.750%, 12/01/47	12/22 at 103.00	N/R	1,015,110
585	Overlook Metropolitan District in the Town of Parker, Douglas County, Colorado, General Obligation Limited Tax Bonds, Series 2016A, 5.500%, 12/01/46	12/21 at 103.00	N/R	559,079
	Park 70 Metropolitan District, City of Aurora, Colorado, General Obligation Refunding and Improvement Bonds, Series 2016:
660	5.000%, 12/01/36	12/26 at 100.00	Baa3	720,172
1,060	5.000%, 12/01/46	12/26 at 100.00	Baa3	1,145,266
660	Park Creek Metropolitan District, Colorado, Senior Limited Property Tax Supported Revenue Bonds, Refunding Series 2015A, 5.000%, 12/01/45	12/25 at 100.00	BBB	718,793
880	Park Creek Metropolitan District, Colorado, Senior Limited Property Tax Supported Revenue Refunding Bonds, Series 2011, 6.125%, 12/01/41 (Pre-refunded 12/01/20) – AGM Insured	12/20 at 100.00	A2 (6)	1,025,165
5,435	Poudre Tech Metro District, Colorado, Unlimited Property Tax Supported Revenue Bonds, Refunding & Improvement Series 2010A, 5.000%, 12/01/39 – AGM Insured	12/20 at 100.00	AA	5,814,580
1,180	Regional Transportation District, Colorado, Certificates of Participation, Series 2010A, 5.375%, 6/01/31	6/20 at 100.00	A	1,295,734
	Regional Transportation District, Colorado, Denver Transit Partners Eagle P3 Project Private Activity Bonds, Series 2010:
6,500	6.500%, 1/15/30	7/20 at 100.00	Baa3	7,280,585
3,750	6.000%, 1/15/41	7/20 at 100.00	Baa3	4,134,600
1,280	Sierra Ridge Metropolitan District 2, Douglas County, Colorado, General Obligation Bonds, Limited Tax Series 2016A, 5.500%, 12/01/46	12/21 at 103.00	N/R	1,308,941
930	SouthGlenn Metropolitan District, Colorado, Special Revenue Bonds, Refunding Series 2016, 5.000%, 12/01/46	12/21 at 103.00	N/R	943,625
	Sterling Ranch Community Authority Board, Douglas County, Colorado, Limited Tax Supported Revenue Bonds, Senior Series 2015A:
500	5.500%, 12/01/35	12/20 at 103.00	N/R	503,675
1,000	5.750%, 12/01/45	12/20 at 103.00	N/R	1,010,210
500	Table Mountain Metropolitan District, Jefferson County, Colorado, Limited Tax General Obligation Bonds, Series 2016A, 5.250%, 12/01/45	12/21 at 103.00	N/R	513,425
8,500	University of Colorado Hospital Authority, Colorado, Revenue Bonds, Series 2012A, 5.000%, 11/15/42	11/22 at 100.00	AA-	9,532,920
338,080	Total Colorado			298,280,162
	Connecticut – 0.5% (0.3% of Total Investments)
	Connecticut Health and Educational Facilities Authority, Revenue Bonds, Healthcare Facility Expansion Church Home of Hartford Inc. Project, Series 2016A:
590	5.000%, 9/01/46	9/26 at 100.00	BB	599,015
740	5.000%, 9/01/53	9/26 at 100.00	BB	743,189
10,105	Connecticut Health and Educational Facilities Authority, Revenue Bonds, Quinnipiac University, Refunding Series 2015L, 4.125%, 7/01/41	7/25 at 100.00	A-	10,647,841

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Connecticut (continued)
$ 3,250	Connecticut Health and Educational Facilities Authority, Revenue Bonds, Wesleyan University, Series 2010G, 5.000%, 7/01/39 (Pre-refunded 7/01/20)	7/20 at 100.00	Aa3 (6)	$ 3,620,272
14,685	Total Connecticut			15,610,317
	Delaware – 0.1% (0.1% of Total Investments)
2,615	Delaware Economic Development Authority, Exempt Facility Revenue Bonds, Indian River Power LLC Project, Series 2010, 5.375%, 10/01/45	10/20 at 100.00	Baa3	2,725,536
225	Delaware Economic Development Authority, Revenue Bonds, Newark Charter School, Refunding Series 2016A, 5.000%, 9/01/36	9/26 at 100.00	BBB+	246,656
2,840	Total Delaware			2,972,192
	District of Columbia – 1.2% (0.8% of Total Investments)
3,780	District of Columbia Student Dormitory Revenue Bonds, Provident Group - Howard Properties LLC Issue, Series 2013, 5.000%, 10/01/45	10/22 at 100.00	BB+	3,495,366
7,310	District of Columbia Tobacco Settlement Corporation, Tobacco Settlement Asset-Backed Bonds, Series 2001, 6.500%, 5/15/33	No Opt. Call	BBB	8,201,162
181,000	District of Columbia Tobacco Settlement Corporation, Tobacco Settlement Asset-Backed Bonds, Series 2006A, 0.000%, 6/15/46	10/17 at 17.13	N/R	25,711,050
1,500	District of Columbia, Revenue Bonds, Ingleside at Rock Creek Project, Series 2017A, 5.000%, 7/01/42 (WI/DD, Settling 8/04/17)	7/24 at 103.00	N/R	1,473,705
193,590	Total District of Columbia			38,881,283
	Florida – 6.7% (4.3% of Total Investments)
990	Bexley Community Development District, Pasco County, Florida, Special Assessment Revenue Bonds, Series 2016, 4.700%, 5/01/36	5/26 at 100.00	N/R	963,102
19,000	Cape Coral, Florida, Water and Sewer Revenue Bonds, Refunding Series 2011, 5.000%, 10/01/41 – AGM Insured	10/21 at 100.00	A	21,358,470
	Capital Trust Agency, Florida, Revenue Bonds, Odyssey Charter School Project, Series 2017A:
1,065	5.375%, 7/01/37	7/27 at 100.00	BB	1,081,305
1,470	5.500%, 7/01/47	7/27 at 100.00	BB	1,495,049
4,670	City of Miami Beach, Florida, Stormwater Revenue Bonds, Series 2015, 5.000%, 9/01/41	9/25 at 100.00	AA-	5,352,147
1,025	Cityplace Community Development District, Florida, Special Assessment and Revenue Bonds, Refunding Series 2012, 5.000%, 5/01/26	No Opt. Call	A	1,169,156
	Clay County, Florida, Utility System Revenue Bonds, Refunding Series 2007:
5,110	5.000%, 11/01/27 (Pre-refunded 11/01/17) – AGM Insured	11/17 at 100.00	AA (6)	5,163,604
12,585	5.000%, 11/01/32 (Pre-refunded 11/01/17) – AGM Insured (UB)	11/17 at 100.00	AA (6)	12,717,017
1,480	Collier County Educational Facilities Authority, Florida, Revenue Bonds, Hodges University, Refunding Series 2013, 6.125%, 11/01/43	11/23 at 100.00	BBB-	1,670,609
	Creekside at Twin Creeks Community Development District, Florida, Special Assessment Bonds, Area 1 Project, Series 2016A-1:
245	5.250%, 11/01/37	11/28 at 100.00	N/R	260,175
320	5.600%, 11/01/46	11/28 at 100.00	N/R	337,270
515	Creekside at Twin Creeks Community Development District, Florida, Special Assessment Bonds, Area 1 Project, Series 2016A-2, 5.625%, 11/01/35	No Opt. Call	N/R	553,579

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Florida (continued)
	Davie, Florida, Educational Facilities Revenue Bonds, Nova Southeastern University Project, Refunding Series 2013A:
$ 3,445	6.000%, 4/01/42	4/23 at 100.00	Baa1	$4,023,726
1,720	5.625%, 4/01/43	4/23 at 100.00	Baa1	1,950,239
4,000	Davie, Florida, Water and Sewerage Revenue Bonds, Series 2011, 5.000%, 10/01/41 – AGM Insured	10/21 at 100.00	Aa3	4,356,000
	Downtown Doral Community Development District, Florida, Special Assessment Bonds, Series 2015:
280	5.250%, 5/01/35	5/26 at 100.00	N/R	287,286
315	5.300%, 5/01/36	5/26 at 100.00	N/R	322,727
475	5.500%, 5/01/45	5/26 at 100.00	N/R	486,552
655	5.500%, 5/01/46	5/26 at 100.00	N/R	669,076
	Florida Development Finance Corporation, Educational Facilities Revenue Bonds, Classical Preparatory Incorporated Project, Series 2017A:
255	6.000%, 6/15/37	6/26 at 100.00	N/R	260,962
415	6.125%, 6/15/46	6/26 at 100.00	N/R	424,794
	Florida Development Finance Corporation, Educational Facilities Revenue Bonds, Florida Charter Foundation Inc. Projects, Series 2016A:
1,485	6.250%, 6/15/36	6/26 at 100.00	N/R	1,536,440
2,075	4.750%, 7/15/36	7/26 at 100.00	N/R	1,975,255
3,770	6.375%, 6/15/46	6/26 at 100.00	N/R	3,902,516
1,335	5.000%, 7/15/46	7/26 at 100.00	N/R	1,278,423
	Florida Development Finance Corporation, Educational Facilities Revenue Bonds, Renaissance Charter School Income Projects, Series 2015A:
3,090	6.000%, 6/15/35	6/25 at 100.00	N/R	3,191,383
1,890	6.125%, 6/15/46	6/25 at 100.00	N/R	1,945,169
550	Florida Development Finance Corporation, Educational Facilities Revenue Bonds, Renaissance Charter School, Inc. Projects, Series 2014A, 6.125%, 6/15/44	6/24 at 100.00	N/R	561,842
1,750	Florida Development Finance Corporation, Educational Facilities Revenue Bonds, Southwest Charter Foundation Inc Projects, Series 2017A, 6.125%, 6/15/47	6/27 at 100.00	N/R	1,782,270
	Florida Municipal Loan Council, Revenue Bonds, Series 2003B:
165	5.250%, 12/01/17	No Opt. Call	A3	165,531
100	5.250%, 12/01/18	10/17 at 100.00	A3	100,317
2,550	Florida State Board of Education, Public Education Capital Outlay Bonds, Tender Option Bond Trust 2016-XF2347, 15.762%, 6/01/38 – AGC Insured (IF) (4)	6/18 at 101.00	Aa1	2,986,739
1,710	Grand Bay at Doral Community Development District, Miami-Dade County, Florida, Special Assessment Bonds, South Parcel Assessment Area Project, Series 2016, 4.750%, 5/01/36	5/26 at 100.00	N/R	1,730,657
1,915	Halifax Hospital Medical Center, Daytona Beach, Florida, Hospital Revenue Bonds, Series 2006, 5.500%, 6/01/38 (Pre-refunded 6/01/18) – AGM Insured	6/18 at 100.00	AA (6)	1,987,789
1,090	Hillsborough County Industrial Development Authority, Florida, Industrial Development Revenue Bonds, University Community Hospital, Series 1994, 6.500%, 8/15/19 – NPFG Insured (ETM)	No Opt. Call	A (6)	1,151,214

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Florida (continued)
	Indian Trace Development District, Florida, Water Management Special Benefit Assessment Bonds, Series 2005:
$ 1,645	5.000%, 5/01/25 – NPFG Insured	8/17 at 100.00	A3	$1,650,346
1,830	5.000%, 5/01/27 – NPFG Insured	8/17 at 100.00	A3	1,835,893
600	Jacksonville, Florida, Better Jacksonville Sales Tax Revenue Bonds, Refunding Series 2012, 5.000%, 10/01/30	10/22 at 100.00	A+	679,884
1,000	Lakeland, Florida, Hospital System Revenue Bonds, Lakeland Regional Health, Refunding Series 2011, 5.000%, 11/15/25	11/21 at 100.00	A2	1,116,040
625	Lakewood Ranch Stewardship District, Florida, Special Assessment Revenue Bonds, Del Webb Project, Series 2017, 5.000%, 5/01/37	5/27 at 100.00	N/R	634,594
3,000	Leesburg, Florida, Utility System Revenue Bonds, Series 2007A, 5.000%, 10/01/37 (Pre-refunded 10/01/17) – NPFG Insured	10/17 at 100.00	A+ (6)	3,021,090
4,125	Martin County Health Facilities Authority, Florida, Hospital Revenue Bonds, Martin Memorial Medical Center, Series 2015, 5.000%, 11/15/45	11/24 at 100.00	Baa1	4,500,416
	Miami Dade County Industrial Development Authority, Florida, Educational Facilities Revenue Bonds, South Florida Autism Charter School Project, Series 2017:
1,080	5.875%, 7/01/37	7/27 at 100.00	N/R	1,084,774
1,920	6.000%, 7/01/47	7/27 at 100.00	N/R	1,924,646
5,965	Miami Dade County, Florida, Rickenbacker Causeway Revenue Bonds, Series 2014, 5.000%, 10/01/43	10/24 at 100.00	BBB+	6,617,273
2,130	Miami Health Facilities Authority, Florida, Health Facilities Revenue Bonds, Miami Jewish Health System Inc. Project, Series 2017, 5.125%, 7/01/46	7/27 at 100.00	BBB	2,293,754
1,545	Miami, Florida, Special Obligation Non-Ad Valorem Revenue Bonds, Refunding Series 2011A, 6.000%, 2/01/31 – AGM Insured	2/21 at 100.00	A1	1,769,380
5,000	Miami-Dade County Expressway Authority, Florida, Toll System Revenue Bonds, Series 2014A, 5.000%, 7/01/44	7/24 at 100.00	A	5,682,150
10,100	Miami-Dade County, Florida, Aviation Revenue Bonds, Miami International Airport, Series 2008B, 5.000%, 10/01/41 (Pre-refunded 10/01/18) – AGM Insured	10/18 at 100.00	A2 (6)	10,580,558
2,500	Miami-Dade County, Florida, Aviation Revenue Bonds, Miami International Airport, Series 2010A-1, 5.375%, 10/01/41	10/20 at 100.00	A	2,759,800
2,500	Miami-Dade County, Florida, Aviation Revenue Bonds, Miami International Airport, Series 2010B, 5.000%, 10/01/30	10/20 at 100.00	A	2,755,075
2,400	Miami-Dade County, Florida, Special Obligation Bonds, Refunding Subordinate Series 2012B, 5.000%, 10/01/37	10/22 at 100.00	A2	2,719,536
3,015	Miami-Dade County, Florida, Transit System Sales Surtax Revenue Bonds, Series 2008, 5.000%, 7/01/35 (Pre-refunded 7/01/18) – AGM Insured	7/18 at 100.00	A1 (6)	3,129,118
6,305	Miami-Dade County, Florida, Water and Sewer System Revenue Bonds, Series 2013A, 5.000%, 10/01/42	10/22 at 100.00	A+	7,062,735
4,785	Northern Palm Beach County Improvement District, Florida, Water Control and Improvement Bonds, Development Unit 53, Series 2015, 5.350%, 8/01/35	8/26 at 100.00	N/R	5,047,074
4,250	Orange County Health Facilities Authority, Florida, Hospital Revenue Bonds, Orlando Health, Inc., Series 2012A, 5.000%, 10/01/42	4/22 at 100.00	A	4,619,325
230	Palm Beach County Health Facilities Authority, Florida, Revenue Bonds, Sinai Residences of Boca Raton Project, Series 2014A, 7.250%, 6/01/34	6/22 at 102.00	N/R	271,469
60	Pasco County, Florida, Water and Sewer Revenue Bonds, Refunding Series 2006, 5.000%, 10/01/36 – AGM Insured	10/17 at 100.00	Aa2	60,178

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Florida (continued)
	Port St. Lucie, Florida, Utility System Revenue Bonds, Refunding Series 2009:
$ 800	5.000%, 9/01/35 – AGC Insured	9/18 at 100.00	A1	$832,640
7,730	5.000%, 9/01/35 (Pre-refunded 9/01/18) – AGC Insured	9/18 at 100.00	A1 (6)	8,070,970
515	5.250%, 9/01/35 – AGC Insured	9/18 at 100.00	A1	537,624
4,935	5.250%, 9/01/35 (Pre-refunded 9/01/18) – AGC Insured	9/18 at 100.00	A1 (6)	5,165,958
840	Reunion West Community Development District, Florida, Special Assessment Bonds, Area 3 Project, Series 2016, 5.000%, 11/01/46	11/26 at 100.00	N/R	851,306
4,005	Seminole County, Florida, Water and Sewer Revenue Bonds, Refunding & Improvement Series 1992, 6.000%, 10/01/19 – NPFG Insured (ETM)	No Opt. Call	A (6)	4,228,159
	Six Mile Creek Community Development District, Florida, Capital Improvement Revenue Bonds, Assessment Area 2, Series 2016:
265	4.750%, 11/01/28	11/27 at 100.00	N/R	274,585
440	5.375%, 11/01/36	11/27 at 100.00	N/R	454,142
995	South Fork III Community Development District, Florida, Special Assessment Revenue Bonds, Refunding Series 2016, 5.375%, 5/01/37	5/27 at 100.00	N/R	1,035,118
1,000	South Miami Health Facilities Authority, Florida, Hospital Revenue, Baptist Health System Obligation Group, Refunding Series 2007, 5.000%, 8/15/42 (UB) (4)	10/17 at 100.00	Aa3	1,001,890
1,200	St. Lucie County, Florida, Utility System Revenue Refunding Bonds, Series 1993, 5.500%, 10/01/21 – FGIC Insured (ETM)	No Opt. Call	N/R (6)	1,404,000
8,060	Tallahassee, Florida, Health Facilities Revenue Bonds, Tallahassee Memorial HealthCare Inc. Project, Series 2016A, 5.000%, 12/01/55	12/25 at 100.00	Baa1	8,679,169
400	Tamarac, Florida, Utility System Revenue Bonds, Series 2009, 5.000%, 10/01/39 (Pre-refunded 10/01/19) – AGC Insured	10/19 at 100.00	AA (6)	434,384
4,100	Tampa, Florida, Health System Revenue Bonds, Baycare Health System, Series 2012A, 5.000%, 11/15/33	5/22 at 100.00	Aa2	4,583,349
1,295	Tampa, Florida, Healthcare System Revenue Bonds, Allegany Health System - St. Joseph's Hospital, Series 1993, 5.125%, 12/01/23 – NPFG Insured (ETM)	12/17 at 100.00	A (6)	1,324,448
10,095	Tampa-Hillsborough County Expressway Authority, Florida, Revenue Bonds, Refunding Series 2012B, 5.000%, 7/01/42	7/22 at 100.00	A	11,397,659
2,000	Volusia County Educational Facilities Authority, Florida, Revenue Bonds, Embry-Riddle Aeronautical University, Inc. Project, Refunding Series 2011, 5.000%, 10/15/29 – AGM Insured	10/21 at 100.00	A-	2,256,040
5,000	Volusia County Educational Facilities Authority, Florida, Revenue Bonds, Stetson University Inc. Project, Series 2015, 5.000%, 6/01/40	6/25 at 100.00	A-	5,628,250
203,795	Total Florida			219,173,189
	Georgia – 4.0% (2.6% of Total Investments)
	Atlanta, Georgia, Water and Wastewater Revenue Bonds, Refunding Series 2009B:
5,915	5.375%, 11/01/39 – AGM Insured	11/19 at 100.00	A+	6,468,821
11,085	5.375%, 11/01/39 (Pre-refunded 11/01/19) – AGM Insured	11/19 at 100.00	Aa2 (6)	12,169,335
2,825	Cherokee County Water and Sewerage Authority, Georgia, Revenue Bonds, Refunding Series 2007, 4.000%, 8/01/26	8/20 at 100.00	AA	3,001,167
2,000	City of Fairburn, Georgia, General Obligation Bonds, Series 2011, 5.750%, 12/01/31 – AGM Insured	12/21 at 100.00	A2	2,320,360
4,000	Cobb County Kennestone Hospital Authority, Georgia, Revenue Anticipation Certificates, Refunding Series 2012, 5.000%, 4/01/28	4/23 at 100.00	A	4,528,000

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Georgia (continued)
	Cobb County Kennestone Hospital Authority, Georgia, Revenue Anticipation Certificates, Wellstar Health System, Series 2017A:
$ 5,000	5.000%, 4/01/42 (WI/DD, Settling 8/03/17)	4/27 at 100.00	A	$5,671,500
10,500	5.000%, 4/01/47 (WI/DD, Settling 8/03/17)	4/27 at 100.00	A	11,844,735
1,250	DeKalb County Hospital Authority, Georgia, Anticipation Certificates Revenue Bonds, DeKalb Medical Center, Inc. Project, Series 2010, 6.000%, 9/01/30	9/20 at 100.00	BBB-	1,372,638
	Fulton County Development Authority, Georgia, Hospital Revenue Bonds, Wellstar Health System, Inc. Project, Series 2017A:
5,340	5.000%, 4/01/42 (WI/DD, Settling 8/03/17)	4/27 at 100.00	A	6,057,162
3,545	5.000%, 4/01/47 (WI/DD, Settling 8/03/17)	4/27 at 100.00	A	3,999,008
	Gainesville and Hall County Hospital Authority, Georgia, Revenue Anticipation Certificates, Northeast Georgia Health Services Inc., Series 2010B:
1,180	5.250%, 2/15/37	2/20 at 100.00	AA-	1,265,361
3,820	5.250%, 2/15/37 (Pre-refunded 2/15/20)	2/20 at 100.00	N/R (6)	4,222,934
960	5.125%, 2/15/40	2/20 at 100.00	AA-	1,023,072
3,090	5.125%, 2/15/40 (Pre-refunded 2/15/20)	2/20 at 100.00	N/R (6)	3,406,292
15,305	Gainesville and Hall County Hospital Authority, Georgia, Revenue Anticipation Certificates, Northeast Georgia Health Services Inc., Series 2014A, 5.500%, 8/15/54	2/25 at 100.00	AA-	18,071,991
10,825	Georgia Municipal Electric Authority, Plant Vogtle Units 3 & 4 Project J Bonds, Series 2015A, 5.000%, 7/01/60	7/25 at 100.00	A2	11,909,773
2,250	Gwinnett County Hospital Authority, Georgia, Revenue Anticipation Certificates, Gwinnett Hospital System Inc. Project, Series 2007C, 5.500%, 7/01/39 – AGM Insured	7/19 at 100.00	A2	2,396,430
7,030	Gwinnett County School District, Georgia, General Obligation Bonds, Series 2008, 5.000%, 2/01/36 (Pre-refunded 2/01/18)	2/18 at 100.00	AAA	7,175,591
1,300	Macon-Bibb County Urban Development Authority, Georgia, Revenue Bonds, Academy for Classical Education, Series 2017, 5.750%, 6/15/37	6/27 at 100.00	N/R	1,362,764
4,000	Marietta Development Authority, Georgia, University Facilities Revenue Bonds, Life University, Inc. Project, Refunding Series 2017A, 5.000%, 11/01/37	11/27 at 100.00	Ba3	4,216,280
5,000	Medical Center Hospital Authority, Georgia, Revenue Anticipation Certificates, Columbus Regional Healthcare System, Inc. Project, Series 2008, 6.500%, 8/01/38 (Pre-refunded 8/01/18) – AGC Insured	8/18 at 100.00	AA (6)	5,274,950
1,000	Private Colleges and Universities Authority, Georgia, Revenue Bonds, Mercer University, Refunding Series 2012C, 5.250%, 10/01/27	10/22 at 100.00	Baa2	1,110,820
10,090	Private Colleges and Universities Authority, Georgia, Revenue Bonds, Mercer University, Series 2015, 5.000%, 10/01/40	10/25 at 100.00	Baa2	10,958,547
1,710	Valdosta and Lowndes County Hospital Authority, Georgia, Revenue Certificates, South Georgia Medical Center Project, Series 2011B, 5.000%, 10/01/41	10/21 at 100.00	AA-	1,863,951
119,020	Total Georgia			131,691,482
	Guam – 0.0% (0.0% of Total Investments)
650	Guam Government Waterworks Authority, Water and Wastewater System Revenue Bonds, Series 2013, 5.500%, 7/01/43	7/23 at 100.00	BBB-	727,201
	Hawaii – 0.4% (0.3% of Total Investments)
1,500	Hawaii Department of Budget and Finance, Special Purpose Revenue Bonds, Chaminade University of Honolulu, Series 2015A, 5.000%, 1/01/45	1/25 at 100.00	Ba2	1,502,700

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Hawaii (continued)
$ 5,000	Hawaii Department of Budget and Finance, Special Purpose Revenue Bonds, Hawaii Pacific Health Obligated Group, Series 2013A, 5.500%, 7/01/43	7/23 at 100.00	A1	$5,687,450
170	Hawaii Department of Budget and Finance, Special Purpose Revenue Bonds, Hawaii Pacific University, Series 2013A, 6.875%, 7/01/43	7/23 at 100.00	BB	184,671
5,075	Hawaii Department of Budget and Finance, Special Purpose Revenue Bonds, Queens Health Systems, Series 2015A, 4.000%, 7/01/40	7/25 at 100.00	A1	5,256,127
11,745	Total Hawaii			12,630,948
	Idaho – 0.3% (0.2% of Total Investments)
250	Idaho Health Facilities Authority, Revenue Bonds, Madison Memorial Hospital Project, Refunding Series 2016, 5.000%, 9/01/37	9/26 at 100.00	BB+	273,963
8,980	Idaho Health Facilities Authority, Revenue Bonds, Saint Luke's Health System Project, Series 2012A, 5.000%, 3/01/47 – AGM Insured	3/22 at 100.00	A-	9,667,778
1,000	Idaho Health Facilities Authority, Revenue Bonds, Saint Luke's Health System Project, Series 2014A, 4.125%, 3/01/37	3/24 at 100.00	A-	1,037,340
10,230	Total Idaho			10,979,081
	Illinois – 24.2% (15.6% of Total Investments)
675	Bolingbrook, Illinois, General Obligation Bonds, Refunding Series 2013A, 5.000%, 1/01/25	7/23 at 100.00	A2	773,861
67,135	Chicago Board of Education, Illinois, General Obligation Bonds, Dedicated Capital Improvement Revenues, Series 2016, 6.000%, 4/01/46	4/27 at 100.00	A	72,896,526
	Chicago Board of Education, Illinois, General Obligation Bonds, Dedicated Revenues Series 2011A:
6,210	5.500%, 12/01/39	12/21 at 100.00	B3	5,450,579
1,865	5.000%, 12/01/41	12/21 at 100.00	B3	1,613,878
4,905	Chicago Board of Education, Illinois, General Obligation Bonds, Dedicated Revenues Series 2012A, 5.000%, 12/01/42	12/22 at 100.00	B3	4,232,868
8,400	Chicago Board of Education, Illinois, General Obligation Bonds, Dedicated Revenues, Refunding Series 2017B, 7.000%, 12/01/42	12/27 at 100.00	N/R	8,644,608
6,000	Chicago Board of Education, Illinois, General Obligation Bonds, Dedicated Revenues, Refunding SIFMA Index Series 2013A-2, 7.500%, 3/01/35	10/17 at 100.00	B3	5,997,000
2,720	Chicago Board of Education, Illinois, General Obligation Bonds, Dedicated Revenues, Series 2008C, 5.000%, 12/01/29	12/18 at 100.00	B3	2,380,816
38,905	Chicago Board of Education, Illinois, General Obligation Bonds, Dedicated Revenues, Series 2016A, 7.000%, 12/01/44	12/25 at 100.00	B	39,822,769
14,805	Chicago Board of Education, Illinois, General Obligation Bonds, Dedicated Revenues, Series 2016B, 6.500%, 12/01/46	12/26 at 100.00	B	14,659,763
19,585	Chicago Board of Education, Illinois, General Obligation Bonds, Dedicated Revenues, Series 2017A, 7.000%, 12/01/46	12/27 at 100.00	N/R	20,125,742
1,315	Chicago Board of Education, Illinois, Unlimited Tax General Obligation Bonds, Dedicated Tax Revenues, Series 1998B-1, 0.000%, 12/01/30 – NPFG Insured	No Opt. Call	B+	681,144
2,235	Chicago Transit Authority, Illinois, Capital Grant Receipts Revenue Bonds, Federal Transit Administration Section 5307 Urbanized Area Formula Funds, Refunding Series 2011, 5.250%, 6/01/26 – AGM Insured	6/21 at 100.00	A2	2,459,059
1,100	Chicago Transit Authority, Illinois, Sales Tax Receipts Revenue Bonds, Series 2011, 5.250%, 12/01/40	12/21 at 100.00	A3	1,186,130

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Illinois (continued)
$ 12,215	Chicago Transit Authority, Illinois, Sales Tax Receipts Revenue Bonds, Series 2014, 5.250%, 12/01/49	12/24 at 100.00	AA	$13,474,611
7,700	Chicago, Illinois, General Airport Revenue Bonds, O'Hare International Airport, Third Lien Refunding Series 2010C, 5.250%, 1/01/35 – AGC Insured	1/20 at 100.00	A2	8,308,223
	Chicago, Illinois, General Obligation Bonds, City Colleges, Series 1999:
1,500	0.000%, 1/01/31 – NPFG Insured	No Opt. Call	BBB-	794,835
32,670	0.000%, 1/01/32 – FGIC Insured	No Opt. Call	BBB-	16,441,504
12,360	0.000%, 1/01/37 – FGIC Insured	No Opt. Call	BBB-	4,819,288
1,000	Chicago, Illinois, General Obligation Bonds, Project & Refunding Series 2007A, 5.000%, 1/01/27 – AMBAC Insured	12/17 at 100.00	Ba1	1,002,360
2,500	Chicago, Illinois, General Obligation Bonds, Project & Refunding Series 2014A, 5.250%, 1/01/33	1/24 at 100.00	Ba1	2,556,550
17,605	Chicago, Illinois, General Obligation Bonds, Project & Refunding Series 2017A, 6.000%, 1/01/38	1/27 at 100.00	BBB-	18,920,445
4,220	Chicago, Illinois, General Obligation Bonds, Project and Refunding Series 2009C, 5.000%, 1/01/34	1/19 at 100.00	Ba1	4,225,233
1,000	Chicago, Illinois, General Obligation Bonds, Project Series 2011A, 5.250%, 1/01/35	1/21 at 100.00	Ba1	1,011,630
10,200	Chicago, Illinois, General Obligation Bonds, Project Series 2012A, 5.000%, 1/01/33	1/22 at 100.00	Ba1	10,245,696
2,605	Chicago, Illinois, General Obligation Bonds, Refunding Series 2016C, 5.000%, 1/01/38	1/26 at 100.00	BBB-	2,612,867
7,750	Chicago, Illinois, General Obligation Bonds, Series 2004A, 5.000%, 1/01/34 – AGM Insured	10/17 at 100.00	BBB-	7,856,408
3,000	Chicago, Illinois, Wastewater Transmission Revenue Bonds, Second Lien Series 2008C, 5.000%, 1/01/39	1/25 at 100.00	A	3,259,980
10,000	Cook County Community College District 508, Illinois, General Obligation Bonds, Chicago City Colleges, Series 2013, 5.250%, 12/01/43	12/23 at 100.00	BBB	10,501,400
6,160	De Witt, Ford, Livingston, Logan, Mc Lean and Tazewell Community College District 540, Illinois, General Obligation Bonds, Series 2007, 3.000%, 12/01/26 – AGM Insured	12/17 at 100.00	Aa2	6,121,315
	DeKalb, Kane, LaSalle, Lee, Ogle, Winnebago and Boone Counties Community College District 523, Illinois, General Obligation Bonds, Kishwaukee Community College, Series 2011B:
2,500	0.000%, 2/01/33	2/21 at 100.00	AA-	1,033,100
2,000	0.000%, 2/01/34	2/21 at 100.00	AA-	764,800
	Illinois Educational Facilities Authority, Revenue Bonds, Field Museum of Natural History, Series 2002:
2,500	4.450%, 11/01/36	11/25 at 102.00	A	2,672,925
3,400	5.500%, 11/01/36	11/23 at 100.00	A	3,781,582
3,295	Illinois Educational Facilities Authority, Revenue Bonds, Robert Morris College, Series 2000, 5.800%, 6/01/30 – NPFG Insured	12/17 at 100.00	A3	3,330,685
595	Illinois Finance Authority, Charter School Revenue Bonds, Chicago Charter School Foundation, Series 2007, 5.000%, 12/01/36	10/17 at 100.00	BBB	595,315
	Illinois Finance Authority, Charter School Revenue Bonds, Intrinsic Charter Schools Belmont School Project, Series 2015A:
1,700	5.750%, 12/01/35	12/25 at 100.00	N/R	1,722,287
115	6.000%, 12/01/45	12/25 at 100.00	N/R	117,253
6,500	Illinois Finance Authority, Recovery Zone Facility Revenue Bonds, Navistar International Corporation Project, Series 2010, 6.500%, 10/15/40	10/20 at 100.00	CCC+	6,749,405

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Illinois (continued)
$ 6,750	Illinois Finance Authority, Revenue Bonds, Centegra Health System, Series 2012, 5.000%, 9/01/38	9/22 at 100.00	BBB-	$7,149,802
	Illinois Finance Authority, Revenue Bonds, Centegra Health System, Series 2014A:
1,485	5.000%, 9/01/34	9/24 at 100.00	BBB-	1,600,444
19,025	5.000%, 9/01/42	9/24 at 100.00	BBB-	20,175,822
2,000	Illinois Finance Authority, Revenue Bonds, Children's Memorial Hospital, Series 2008A, 5.250%, 8/15/47 – AGC Insured (UB)	8/18 at 100.00	AA-	2,075,500
1,340	Illinois Finance Authority, Revenue Bonds, Edward Health Services Corporation, Series 2008A, 5.500%, 2/01/40 (Pre-refunded 2/01/18) – AMBAC Insured	2/18 at 100.00	A (6)	1,371,222
2,500	Illinois Finance Authority, Revenue Bonds, Elmhurst Memorial Healthcare, Series 2008A, 5.625%, 1/01/37 (Pre-refunded 1/01/18)	1/18 at 100.00	A (6)	2,549,900
1,725	Illinois Finance Authority, Revenue Bonds, Ingalls Health System, Series 2013, 4.250%, 5/15/43	5/22 at 100.00	Baa1	1,745,044
4,300	Illinois Finance Authority, Revenue Bonds, Memorial Health System, Series 2009, 5.500%, 4/01/34	4/19 at 100.00	A1	4,584,015
15,805	Illinois Finance Authority, Revenue Bonds, Mercy Health Corporation, Series 2016, 5.000%, 12/01/46	6/26 at 100.00	A3	17,191,257
1,630	Illinois Finance Authority, Revenue Bonds, Northwestern Memorial HealthCare, Series 2013, 5.000%, 8/15/37	8/22 at 100.00	Aa2	1,787,784
39,675	Illinois Finance Authority, Revenue Bonds, Presence Health Network, Series 2016C, 4.000%, 2/15/41	2/27 at 100.00	BBB-	37,031,058
	Illinois Finance Authority, Revenue Bonds, Provena Health, Series 2009A:
25	7.750%, 8/15/34 (Pre-refunded 8/15/19)	8/19 at 100.00	N/R (6)	28,388
2,475	7.750%, 8/15/34 (Pre-refunded 8/15/19)	8/19 at 100.00	BBB- (6)	2,810,387
1,435	Illinois Finance Authority, Revenue Bonds, Rehabilitation Institute of Chicago, Series 2013A, 6.000%, 7/01/43	7/23 at 100.00	A-	1,656,664
	Illinois Finance Authority, Revenue Bonds, Resurrection Health Care System, Series 1999B:
320	5.000%, 5/15/24 (Pre-refunded 5/15/18) – AGM Insured	5/18 at 100.00	A2 (6)	330,429
4,680	5.000%, 5/15/24 (Pre-refunded 5/15/18) – AGM Insured	5/18 at 100.00	A2 (6)	4,832,521
2,000	Illinois Finance Authority, Revenue Bonds, Rush University Medical Center Obligated Group, Series 2015A, 4.000%, 11/15/39	5/25 at 100.00	A+	2,055,200
	Illinois Finance Authority, Revenue Bonds, Silver Cross Hospital and Medical Centers, Refunding Series 2015C:
560	5.000%, 8/15/35	8/25 at 100.00	Baa1	614,706
6,140	5.000%, 8/15/44	8/25 at 100.00	Baa1	6,580,238
5,735	Illinois Finance Authority, Revenue Bonds, Silver Cross Hospital and Medical Centers, Series 2009, 7.000%, 8/15/44 (Pre-refunded 8/15/19)	8/19 at 100.00	N/R (6)	6,421,881
8,960	Illinois Finance Authority, Revenue Bonds, The Carle Foundation, Series 2011A, 6.000%, 8/15/41 – AGM Insured	8/21 at 100.00	A2	10,213,056
	Illinois Finance Authority, Revenue Bonds, The University of Chicago Medical Center, Series 2011C:
1,150	5.500%, 8/15/41 (Pre-refunded 2/15/21)	2/21 at 100.00	AA- (6)	1,326,456
4,500	5.500%, 8/15/41 (Pre-refunded 2/15/21) (UB) (4)	2/21 at 100.00	AA- (6)	5,190,480
20,000	Illinois Finance Authority, Revenue Bonds, University of Chicago, Refunding Series 2015A, 5.000%, 10/01/46 (UB)	10/25 at 100.00	AA-	22,662,600

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Illinois (continued)
$ 19,975	Illinois Finance Authority, Revenue Bonds, University of Chicago, Series 2012A, 5.000%, 10/01/51	10/21 at 100.00	AA-	$21,648,306
3,665	Illinois Sports Facility Authority, State Tax Supported Bonds, Refunding Series 2014, 5.250%, 6/15/31 – AGM Insured	6/24 at 100.00	BBB-	4,080,831
	Illinois State, General Obligation Bonds, February Series 2014:
3,200	5.250%, 2/01/32	2/24 at 100.00	BBB-	3,405,312
2,000	5.250%, 2/01/33	2/24 at 100.00	BBB-	2,124,800
1,575	5.250%, 2/01/34	2/24 at 100.00	BBB-	1,669,595
7,500	5.000%, 2/01/39	2/24 at 100.00	BBB-	7,694,475
5,000	Illinois State, General Obligation Bonds, June Series 2016, 4.000%, 6/01/35	6/26 at 100.00	BBB-	4,715,950
	Illinois State, General Obligation Bonds, May Series 2014:
510	5.000%, 5/01/36	5/24 at 100.00	BBB-	525,815
3,245	5.000%, 5/01/39	5/24 at 100.00	BBB-	3,331,674
	Illinois State, General Obligation Bonds, November Series 2016:
11,800	5.000%, 11/01/40	11/26 at 100.00	BBB-	12,200,964
13,200	5.000%, 11/01/41	11/26 at 100.00	BBB-	13,638,504
1,500	Illinois State, General Obligation Bonds, Refunding Series 2008, 5.000%, 4/01/22	1/18 at 100.00	BBB-	1,503,045
2,625	Illinois State, General Obligation Bonds, Refunding Series 2010, 5.000%, 1/01/24	1/20 at 100.00	BBB-	2,735,539
	Illinois State, General Obligation Bonds, Refunding Series 2012:
3,935	5.000%, 8/01/21	No Opt. Call	BBB-	4,244,173
1,725	5.000%, 8/01/22	No Opt. Call	BBB-	1,880,733
3,425	5.000%, 8/01/23	No Opt. Call	BBB-	3,764,897
1,190	5.000%, 8/01/25	8/22 at 100.00	BBB-	1,282,261
	Illinois State, General Obligation Bonds, Series 2013:
2,000	5.250%, 7/01/31	7/23 at 100.00	BBB-	2,121,300
2,990	5.500%, 7/01/38	7/23 at 100.00	BBB-	3,179,596
5,000	Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Senior Lien Series 2013A, 5.000%, 1/01/35	1/23 at 100.00	AA-	5,606,600
18,920	Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Senior Lien Series 2015A, 5.000%, 1/01/40	7/25 at 100.00	AA-	21,547,042
1,395	Illinois Toll Highway Authority, Toll Highway Revenue Bonds, Tender Option Bond Trust 2015-XF0051, 15.310%, 1/01/38 (IF)	1/23 at 100.00	AA-	2,072,440
7,400	Macon County School District 61 Decatur, Illinois, General Obligation Bonds, Series 2011A, 5.250%, 1/01/37 – AGM Insured	1/21 at 100.00	A2	8,030,702
17,500	Metropolitan Pier and Exposition Authority, Illinois, McCormick Place Expansion Project Bonds, Refunding Series 2012B, 5.000%, 6/15/52	6/22 at 100.00	BB+	17,600,450
540	Metropolitan Pier and Exposition Authority, Illinois, McCormick Place Expansion Project Bonds, Refunding Series 2015B, 5.000%, 6/15/52	12/25 at 100.00	BB+	544,936
	Metropolitan Pier and Exposition Authority, Illinois, McCormick Place Expansion Project Bonds, Series 2015A:
2,890	0.000%, 12/15/52	No Opt. Call	BB+	388,156
5,185	5.000%, 6/15/53	12/25 at 100.00	BB+	5,228,813
15,000	Metropolitan Pier and Exposition Authority, Illinois, McCormick Place Expansion Project Refunding Bonds, Series 2010A, 5.500%, 6/15/50	6/20 at 100.00	BB+	15,348,300

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Illinois (continued)
	Metropolitan Pier and Exposition Authority, Illinois, Revenue Bonds, McCormick Place Expansion Project, Capital Appreciation Refunding Series 2010B-1:
$ 25,000	0.000%, 6/15/44 – AGM Insured	No Opt. Call	BBB-	$7,621,000
43,200	0.000%, 6/15/45 – AGM Insured	No Opt. Call	BBB-	12,565,584
10,000	0.000%, 6/15/46 – AGM Insured	No Opt. Call	BBB-	2,774,700
41,150	Metropolitan Pier and Exposition Authority, Illinois, Revenue Bonds, McCormick Place Expansion Project, Refunding Series 2010B-2, 5.000%, 6/15/50	6/20 at 100.00	BB+	41,316,658
8,750	Metropolitan Pier and Exposition Authority, Illinois, Revenue Bonds, McCormick Place Expansion Project, Series 1994B, 0.000%, 6/15/28 – NPFG Insured	No Opt. Call	A3	5,785,325
	Metropolitan Pier and Exposition Authority, Illinois, Revenue Bonds, McCormick Place Expansion Project, Series 2002A:
18,000	0.000%, 12/15/24 – NPFG Insured	No Opt. Call	BBB-	14,157,540
20,045	0.000%, 12/15/35 – AGM Insured	No Opt. Call	BBB-	9,256,581
695	Montgomery, Illinois, Lakewood Creek Project Special Assessment Bonds, Series 2007, 4.700%, 3/01/30 – RAAI Insured	10/17 at 100.00	AA	695,757
1,846	Plano, Illinois, Special Tax Bonds, Special Service Area 1 & 2 Lakewood Springs Project, Refunding Series 2014, 5.000%, 3/01/34 – AGM Insured	3/24 at 100.00	AA	2,023,991
2,600	Regional Transportation Authority, Cook, DuPage, Kane, Lake, McHenry and Will Counties, Illinois, General Obligation Bonds, Series 2000A, 6.500%, 7/01/30 – NPFG Insured	No Opt. Call	A2	3,506,750
3,900	Rosemont Village, Illinois, General Obligation Bonds, Corporate Purpose Series 2011A, 5.600%, 12/01/35 – AGM Insured	12/20 at 100.00	A2	4,255,602
7,025	Southwestern Illinois Development Authority, Health Facility Revenue Bonds, Memorial Group, Inc., Series 2013, 7.625%, 11/01/48	11/23 at 100.00	AA	9,603,526
4,000	Southwestern Illinois Development Authority, School Revenue Bonds, Triad School District 2, Madison County, Illinois, Series 2006, 0.000%, 10/01/25 – NPFG Insured	No Opt. Call	A3	3,067,920
12,125	Springfield, Illinois, Electric Revenue Bonds, Senior Lien Series 2015, 5.000%, 3/01/40 – AGM Insured	3/25 at 100.00	A2	13,605,584
	Will County Community Unit School District 201U, Crete-Monee, Illinois, General Obligation Bonds, Capital Appreciation Series 2004:
780	0.000%, 11/01/22 – NPFG Insured (ETM)	No Opt. Call	A3 (6)	720,322
2,550	0.000%, 11/01/22 – NPFG Insured	No Opt. Call	A3	2,260,116
6,390	Will County School District 122, New Lenox, Illinois, General Obligation Bonds, Capital Appreciation School Series 2004D, 0.000%, 11/01/24 – AGM Insured	No Opt. Call	Aa3	5,314,946

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Illinois (continued)
	Williamson & Johnson Counties Community Unit School District 2, Marion, Illinois, General Obligation Bonds, Series 2011:
$ 930	7.000%, 12/01/21 – AGM Insured	12/20 at 100.00	A2	$1,083,171
1,035	7.000%, 12/01/22 – AGM Insured	12/20 at 100.00	A2	1,201,635
1,155	7.000%, 12/01/23 – AGM Insured	12/20 at 100.00	A2	1,340,955
1,065	7.000%, 12/01/26 – AGM Insured	12/20 at 100.00	A2	1,229,010
2,085	7.250%, 12/01/29 (Pre-refunded 12/01/20) – AGM Insured	12/20 at 100.00	A2 (6)	2,507,067
2,295	7.250%, 12/01/30 (Pre-refunded 12/01/20) – AGM Insured	12/20 at 100.00	A2 (6)	2,759,577
866,671	Total Illinois			796,597,820
	Indiana – 4.1% (2.6% of Total Investments)
	Allen County, Indiana, Economic Development Revenue Bonds, Fort Wayne Project, Senior Series 2017A-1:
425	6.625%, 1/15/34	1/24 at 104.00	N/R	440,806
675	6.750%, 1/15/43	1/24 at 104.00	N/R	700,016
1,605	Chesterton, Indiana, Economic Development Revenue Bonds, Storypoint Chesterton Project, Series 2016, 6.250%, 1/15/43	1/24 at 104.00	N/R	1,625,608
2,640	Crown Point Multi-School Building Corporation, Indiana, First Mortgage Bonds, Crown Point Community School Corporation, Series 2000, 0.000%, 1/15/24 – NPFG Insured	No Opt. Call	A3	2,317,973
12,040	Indiana Finance Authority, Educational Facilities Revenue Bonds, Valparaiso University Project, Series 2014, 5.000%, 10/01/44	10/24 at 100.00	A3	13,299,865
365	Indiana Finance Authority, Environmental Improvement Revenue Bonds, United States Steel Corporation Project, Refunding Series 2010, 6.000%, 12/01/26	6/20 at 100.00	Caa1	369,942
125	Indiana Finance Authority, Environmental Improvement Revenue Bonds, United States Steel Corporation Project, Refunding Series 2011, 6.000%, 12/01/19	No Opt. Call	Caa1	129,176
10,750	Indiana Finance Authority, Health System Revenue Bonds, Franciscan Alliance, Inc. Obligated Group, Series 2016A, 4.000%, 11/01/51	11/25 at 100.00	Aa3	10,998,432
10,190	Indiana Finance Authority, Hospital Revenue Bonds, Community Health Network Project, Series 2012A, 5.000%, 5/01/42	5/23 at 100.00	A	11,123,506
4,500	Indiana Finance Authority, Midwestern Disaster Relief Revenue Bonds, Ohio Valley Electric Corporation Project, Series 2012A, 5.000%, 6/01/39 – AGM Insured	6/22 at 100.00	Ba1	4,574,025
5,000	Indiana Finance Authority, Revenue Bonds, Trinity Health Care Group, Refunding Series 2010B, 5.000%, 12/01/37	12/20 at 100.00	AA-	5,511,850
13,880	Indiana Finance Authority, Wastewater Utility Revenue Bonds, CWA Authority Project, Series 2011B, 5.000%, 10/01/41	10/21 at 100.00	A3	15,602,924
17,970	Indiana Finance Authority, Wastewater Utility Revenue Bonds, CWA Authority Project, Series 2014A, 5.000%, 10/01/44	10/24 at 100.00	A	20,439,078
2,250	Indiana Health and Educational Facilities Financing Authority, Revenue Bonds, Sisters of Saint Francis Health Services Inc., Series 2006E, 5.250%, 5/15/41 (Pre-refunded 5/01/18) – AGM Insured	5/18 at 100.00	Aa3 (6)	2,323,688
5,000	Indianapolis Local Public Improvement Bond Bank Bonds, Indiana, PILOT Infrastructure Project Revenue Bonds, Series 2010F, 5.000%, 1/01/35 – AGM Insured	1/20 at 100.00	AA	5,422,450
	Indianapolis Local Public Improvement Bond Bank, Indiana, Series 1999E:
10,000	0.000%, 2/01/26 – AMBAC Insured	No Opt. Call	A	7,960,800
20,000	0.000%, 2/01/28 – AMBAC Insured	No Opt. Call	A	14,651,200

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Indiana (continued)
	Indianapolis Local Public Improvement Bond Bank, Indiana, Waterworks Project Series 2009A:
$ 2,855	5.500%, 1/01/38 (Pre-refunded 1/01/19) – AGC Insured	1/19 at 100.00	A1 (6)	$3,039,633
11,760	5.500%, 1/01/38 – AGC Insured	1/19 at 100.00	A	12,428,674
1,500	Vigo County Hospital Authority, Indiana, Revenue Bonds, Union Hospital, Series 2007, 5.800%, 9/01/47 (Pre-refunded 9/01/17)	9/17 at 100.00	N/R (6)	1,506,180
133,530	Total Indiana			134,465,826
	Iowa – 3.1% (2.0% of Total Investments)
10,000	Iowa Finance Authority, Health Facilities Revenue Bonds, UnityPoint Health Project, Series 2013A, 5.250%, 2/15/44	2/23 at 100.00	Aa3	11,091,800
	Iowa Finance Authority, Iowa, Midwestern Disaster Area Revenue Bonds, Iowa Fertilizer Company Project, Series 2013:
21,280	5.000%, 12/01/19	No Opt. Call	B-	21,752,629
10,685	5.250%, 12/01/25	12/23 at 100.00	B-	11,422,051
18,290	Iowa Finance Authority, Iowa, Midwestern Disaster Area Revenue Bonds, Iowa Fertilizer Company Project, Series 2016, 5.875%, 12/01/27	6/19 at 105.00	B-	18,991,421
	Iowa Tobacco Settlement Authority, Asset Backed Settlement Revenue Bonds, Series 2005C:
8,285	5.375%, 6/01/38	10/17 at 100.00	B2	8,243,244
2,200	5.500%, 6/01/42	10/17 at 100.00	B2	2,189,792
21,325	5.625%, 6/01/46	10/17 at 100.00	B2	21,080,189
8,400	Iowa Tobacco Settlement Authority, Tobacco Asset-Backed Revenue Bonds, Series 2005B, 5.600%, 6/01/34	10/17 at 100.00	B2	8,343,216
100,465	Total Iowa			103,114,342
	Kansas – 0.8% (0.5% of Total Investments)
	Kansas Development Finance Authority, Revenue Bonds, Sisters of Charity of Leavenworth Health Services Corporation, Series 2010A:
1,240	5.000%, 1/01/40	1/20 at 100.00	AA-	1,320,352
8,140	5.000%, 1/01/40 (Pre-refunded 1/01/20)	1/20 at 100.00	N/R (6)	8,906,218
1,000	Lenexa, Kansas, Health Care Facilities Revenue Bonds, Lakeview Village Inc, Series 2017A, 5.000%, 5/15/43	5/27 at 100.00	BB+	1,028,000
	Wyandotte County-Kansas City Unified Government, Kansas, Sales Tax Special Obligation Bonds, Vacation Village Project Area 1 and 2A, Series 2015:
5,385	5.000%, 9/01/27	9/25 at 100.00	N/R	5,463,459
5,435	5.750%, 9/01/32	9/25 at 100.00	N/R	5,487,122
2,595	6.000%, 9/01/35	9/25 at 100.00	N/R	2,608,027
23,795	Total Kansas			24,813,178
	Kentucky – 2.8% (1.8% of Total Investments)
4,565	Christian County, Kentucky, Hospital Revenue Bonds, Jennie Stuart Medical Center, Series 2016, 5.500%, 2/01/44	2/26 at 100.00	BB+	4,901,167
6,675	Kentucky Bond Development Corporation, Tax Increment Revenue Bonds, Summit Lexington Project, Series 2016A, 4.400%, 10/01/24	No Opt. Call	N/R	6,517,870

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Kentucky (continued)
	Kentucky Economic Development Finance Authority, Hospital Revenue Bonds, Owensboro Health, Refunding Series 2017A:
$ 7,850	5.000%, 6/01/37	6/27 at 100.00	Baa3	$8,670,796
3,280	5.000%, 6/01/41	6/27 at 100.00	Baa3	3,594,650
5,240	Kentucky Economic Development Finance Authority, Hospital Revenue Bonds, Owensboro Medical Health System, Series 2010A, 6.000%, 6/01/30	6/20 at 100.00	Baa3	5,955,522
6,015	Kentucky Economic Development Finance Authority, Hospital Revenue Bonds, Owensboro Medical Health System, Series 2010B, 6.375%, 3/01/40 (Pre-refunded 6/01/20)	6/20 at 100.00	Baa3 (6)	6,899,145
1,000	Kentucky Economic Development Finance Authority, Louisville Arena Project Revenue Bonds, Louisville Arena Authority, Inc., Series 2008-A1, 6.000%, 12/01/33 – AGC Insured	6/18 at 100.00	A3	1,022,090
	Kentucky Economic Development Finance Authority, Revenue Bonds, Next Generation Kentucky Information Highway Project, Senior Series 2015A:
4,345	5.000%, 7/01/37	7/25 at 100.00	Baa2	4,776,502
7,370	5.000%, 7/01/40	7/25 at 100.00	Baa2	8,069,929
10,245	5.000%, 1/01/45	7/25 at 100.00	Baa2	11,166,333
	Kentucky Public Transportation Infrastructure Authority, First Tier Toll Revenue Bonds, Downtown Crossing Project, Convertible Capital Appreciation Series 2013C:
4,360	0.000%, 7/01/43 (7)	7/31 at 100.00	Baa3	3,775,368
7,510	0.000%, 7/01/46 (7)	7/31 at 100.00	Baa3	6,530,771
	Kentucky Public Transportation Infrastructure Authority, First Tier Toll Revenue Bonds, Downtown Crossing Project, Series 2013A:
2,390	5.750%, 7/01/49	7/23 at 100.00	Baa3	2,679,142
480	6.000%, 7/01/53	7/23 at 100.00	Baa3	544,008
	Kentucky State Property and Buildings Commission, Revenue Bonds, Project 93, Refunding Series 2009:
715	5.250%, 2/01/20 – AGC Insured	2/19 at 100.00	AA	760,717
5,560	5.250%, 2/01/20 (Pre-refunded 2/01/19) – AGC Insured	2/19 at 100.00	AA (6)	5,915,062
1,135	5.250%, 2/01/24 – AGC Insured	2/19 at 100.00	AA	1,205,813
8,865	5.250%, 2/01/24 (Pre-refunded 2/01/19) – AGC Insured	2/19 at 100.00	AA (6)	9,431,119
87,600	Total Kentucky			92,416,004
	Louisiana – 2.1% (1.4% of Total Investments)
3,080	Ascension Parish Industrial development Board, Louisiana, Revenue Bonds, Impala Warehousing (US) LLC Project, Series 2013, 6.000%, 7/01/36	7/23 at 100.00	N/R	3,322,150
4,330	Jefferson Parish Hospital District1, Louisiana, Hospital Revenue Bonds, West Jefferson Medical Center, Refunding Series 2011A, 6.000%, 1/01/39 (Pre-refunded 1/01/21) – AGM Insured	1/21 at 100.00	A2 (6)	5,035,530
5,000	Lafayette Public Trust Financing Authority, Louisiana, Revenue Bonds, Ragin' Cajun Facilities Inc. Housing & Parking Project, Series 2010, 5.500%, 10/01/41 – AGM Insured	10/20 at 100.00	AA	5,687,750
13,500	Louisiana Local Government Environmental Facilities and Community Development Authority, Revenue Bonds, Womans Hospital Foundation Project, Refunding Series 2017A, 5.000%, 10/01/41	10/27 at 100.00	A	15,318,045
10,000	Louisiana Public Facilities Authority, Hospital Revenue Bonds, Franciscan Missionaries of Our Lady Health System, Series 1998A, 5.750%, 7/01/25 – AGM Insured (UB)	No Opt. Call	A2	11,639,600

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Louisiana (continued)
$ 11,000	Louisiana Public Facilities Authority, Revenue Bonds, Loyola University Project, Refunding Series 2017, 0.000%, 10/01/46 (7)	10/33 at 100.00	BBB+	$9,048,160
	Louisiana Public Facilities Authority, Revenue Bonds, Ochsner Clinic Foundation Project, Series 2015:
1,000	4.250%, 5/15/40	5/25 at 100.00	A3	1,044,450
6,970	5.000%, 5/15/47	5/25 at 100.00	A3	7,711,538
1,000	New Orleans, Louisiana, Sewerage Service Revenue Bonds, Refunding Series 2014, 4.250%, 6/01/34	6/24 at 100.00	A-	1,053,590
10,185	St John Baptist Parish, Louisiana, Revenue Bonds, Marathon Oil Corporation, Series 2007A, 5.125%, 6/01/37	9/17 at 100.00	Ba1	10,203,944
66,065	Total Louisiana			70,064,757
	Maine – 0.9% (0.6% of Total Investments)
7,530	Maine Health and Higher Educational Facilities Authority Revenue Bonds, Eastern Maine Medical Center Obligated Group Issue, Series 2013, 5.000%, 7/01/43	7/23 at 100.00	Ba1	7,743,099
	Maine Health and Higher Educational Facilities Authority Revenue Bonds, Eastern Maine Medical Center Obligated Group Issue, Series 2016A:
5,280	4.000%, 7/01/41	7/26 at 100.00	Ba1	4,766,414
5,565	4.000%, 7/01/46	7/26 at 100.00	Ba1	4,904,268
1,050	Maine Health and Higher Educational Facilities Authority, Revenue Bonds, Maine General Medical Center, Series 2011, 6.750%, 7/01/41	7/21 at 100.00	Ba2	1,149,298
10,000	Maine Health and Higher Educational Facilities Authority, Revenue Bonds, Mainehealth Issue, Series 2015, 5.000%, 7/01/39	7/24 at 100.00	A+	11,128,300
29,425	Total Maine			29,691,379
	Maryland – 1.2% (0.8% of Total Investments)
2,500	Maryland Health and Higher Educational Facilities Authority, Revenue Bonds, Adventist Healthcare, Series 2011A, 6.000%, 1/01/26	1/22 at 100.00	Baa3	2,881,775
13,315	Maryland Health and Higher Educational Facilities Authority, Revenue Bonds, Adventist Healthcare, Series 2016A, 5.500%, 1/01/46	1/27 at 100.00	Baa3	15,194,279
10,000	Maryland Health and Higher Educational Facilities Authority, Revenue Bonds, LifeBridge Health System, Series 2015, 5.000%, 7/01/47	7/25 at 100.00	A+	11,302,000
2,500	Maryland Health and Higher Educational Facilities Authority, Revenue Bonds, Peninsula Regional Medical Center Issue, Refunding Series 2015, 5.000%, 7/01/45	7/24 at 100.00	A3	2,744,625
3,000	Maryland Health and Higher Educational Facilities Authority, Revenue Bonds, University of Maryland Medical System Issue, Series 2013A, 5.000%, 7/01/43	7/22 at 100.00	A-	3,301,110
	Prince George's County Revenue Authority, Maryland, Special Obligation Bonds, Suitland-Naylor Road Project, Series 2016:
2,000	4.750%, 7/01/36	1/26 at 100.00	N/R	1,994,980
2,300	5.000%, 7/01/46	1/26 at 100.00	N/R	2,306,486
35,615	Total Maryland			39,725,255
	Massachusetts – 2.7% (1.7% of Total Investments)
9,500	Massachusetts Department of Transportation, Metropolitan Highway System Revenue Bonds, Commonwealth Contract Assistance Secured, Refunding Series 2010B, 5.000%, 1/01/35	1/20 at 100.00	AA	10,333,530
3,125	Massachusetts Department of Transportation, Metropolitan Highway System Revenue Bonds, Refunding Senior Lien Series 2010B, 5.000%, 1/01/37	1/20 at 100.00	A3	3,369,656

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Massachusetts (continued)
	Massachusetts Development Finance Agency Revenue Bonds, Lawrence General Hospital Issue, Series 2014A:
$ 2,245	5.250%, 7/01/34	7/24 at 100.00	BB+	$2,424,286
6,195	5.500%, 7/01/44	7/24 at 100.00	BB+	6,716,371
14,555	Massachusetts Development Finance Agency, Resource Recovery Revenue Refunding Bonds, Covanta Energy Project, Series 2012B, 4.875%, 11/01/42	11/17 at 100.00	BB-	14,572,757
	Massachusetts Development Finance Agency, Revenue Bonds, Emerson College, Series 2015:
4,020	4.500%, 1/01/45	1/25 at 100.00	Baa2	4,141,283
2,950	5.000%, 1/01/45	1/25 at 100.00	Baa2	3,227,684
6,955	Massachusetts Development Finance Agency, Revenue Bonds, Emmanuel College, Series 2016A, 4.000%, 10/01/46	10/26 at 100.00	Baa2	7,026,567
6,000	Massachusetts Development Finance Authority, Revenue Bonds, WGBH Educational Foundation, Series 2002A, 5.750%, 1/01/42 – AMBAC Insured	No Opt. Call	A+	8,282,880
500	Massachusetts Health and Educational Facilities Authority, Revenue Bonds, CareGroup Inc., Series 2008E-1 &2, 5.125%, 7/01/38 (Pre-refunded 7/01/18)	7/18 at 100.00	A- (6)	519,495
5,330	Massachusetts Health and Educational Facilities Authority, Revenue Bonds, Harvard University, Tender Option Bond Trust 2016-XL0017, 12.030%, 12/15/34 (Pre-refunded 12/15/19) (IF) (4)	12/19 at 100.00	AAA	6,869,251
1,000	Massachusetts Health and Educational Facilities Authority, Revenue Bonds, Massachusetts Eye and Ear Infirmary, Series 2010C, 5.375%, 7/01/35	7/20 at 100.00	BBB-	1,072,770
7,405	Massachusetts Health and Educational Facilities Authority, Revenue Bonds, Massachusetts Institute of Technology, Series 2002K, 5.500%, 7/01/32 (UB)	No Opt. Call	AAA	9,963,946
	Massachusetts Health and Educational Facilities Authority, Revenue Bonds, Suffolk University, Refunding Series 2009A:
770	5.750%, 7/01/39	7/19 at 100.00	BBB	826,433
1,530	5.750%, 7/01/39 (Pre-refunded 7/01/19)	7/19 at 100.00	N/R (6)	1,667,761
4,560	Massachusetts School Building Authority, Dedicated Sales Tax Revenue Bonds, Senior Series 2013A, 5.000%, 5/15/43	5/23 at 100.00	Aa2	5,216,959
425	Massachusetts Water Pollution Abatement Trust, Revenue Bonds, MWRA Loan Program, Subordinate Series 1999A, 5.750%, 8/01/29	2/18 at 100.00	AAA	426,479
1,245	Springfield Water and Sewer Commission, Massachusetts, General Revenue Bonds, Refunding Series 2010B, 5.000%, 11/15/30 (Pre-refunded 11/15/20) – AGC Insured	11/20 at 100.00	A3 (6)	1,404,634
78,310	Total Massachusetts			88,062,742
	Michigan – 2.9% (1.9% of Total Investments)
5,490	Detroit City School District, Wayne County, Michigan, Unlimited Tax School Building and Site Improvement Bonds, Series 2001A, 6.000%, 5/01/29 – AGM Insured (UB)	No Opt. Call	AA	6,796,895
2,985	Detroit Water and Sewerage Department, Michigan, Sewage Disposal System Revenue Bonds, Refunding Senior Lien Series 2012A, 5.250%, 7/01/39	7/22 at 100.00	A-	3,320,842
	Kalamazoo Hospital Finance Authority, Michigan, Hospital Revenue Refunding Bonds, Bronson Methodist Hospital, Series 2010:
895	5.250%, 5/15/36 – AGM Insured	5/20 at 100.00	A2	963,378
1,105	5.250%, 5/15/36 (Pre-refunded 5/15/20) – AGM Insured	5/20 at 100.00	A2 (6)	1,230,274

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Michigan (continued)
	Michigan Finance Authority, Hospital Revenue Bonds, Sparrow Obligated Group, Refunding Series 2015:
$ 4,495	4.000%, 11/15/35	5/25 at 100.00	A+	$4,693,679
2,550	4.000%, 11/15/36	5/25 at 100.00	A+	2,657,381
10,000	Michigan Finance Authority, Michigan, Revenue Bonds, Trinity Health Credit Group, Series 2016MI, 5.000%, 12/01/45 (UB) (4)	6/26 at 100.00	AA-	11,366,900
	Michigan Finance Authority, Revenue Bonds, Trinity Health Credit Group, Refunding Series 2011:
10	5.000%, 12/01/39 (Pre-refunded 12/01/21)	12/21 at 100.00	N/R (6)	11,611
3,240	5.000%, 12/01/39	12/21 at 100.00	AA-	3,658,705
4,000	Michigan Public Power Agency, AFEC Project Revenue Bonds, Series 2012A, 5.000%, 1/01/43	1/22 at 100.00	BBB	4,244,280
	Michigan State Building Authority, Revenue Bonds, Facilities Program, Refunding Series 2011-II-A:
2,750	5.375%, 10/15/36	10/21 at 100.00	A+	3,112,862
8,260	5.375%, 10/15/41	10/21 at 100.00	A+	9,310,837
	Michigan State Hospital Finance Authority, Hospital Revenue Bonds, Henry Ford Health System, Refunding Series 2009:
5,500	5.625%, 11/15/29 (Pre-refunded 11/15/19)	11/19 at 100.00	A3 (6)	6,072,495
10,585	5.750%, 11/15/39 (Pre-refunded 11/15/19)	11/19 at 100.00	A3 (6)	11,716,642
13,855	Michigan State Hospital Finance Authority, Revenue Bonds, Trinity Health Care Group, Series 2009C, 5.000%, 12/01/48	6/22 at 100.00	AA-	14,962,430
3,050	Michigan Tobacco Settlement Finance Authority, Tobacco Settlement Asset-Backed Revenue Bonds, Series 2008A, 6.875%, 6/01/42	6/18 at 100.00	B2	3,096,757
1,150	Royal Oak Hospital Finance Authority, Michigan, Hospital Revenue Bonds, William Beaumont Hospital, Refunding Series 2009V, 8.250%, 9/01/39 (Pre-refunded 9/01/18)	9/18 at 100.00	Aaa	1,240,839
	Wayne County Airport Authority, Michigan, Revenue Bonds, Detroit Metropolitan Wayne County Airport, Series 2015D:
3,550	5.000%, 12/01/40	12/25 at 100.00	A-	4,009,867
3,600	5.000%, 12/01/45	12/25 at 100.00	A-	4,043,952
87,070	Total Michigan			96,510,626
	Minnesota – 0.8% (0.5% of Total Investments)
	Baytown Township, Minnesota Charter School Lease Revenue Bonds, Saint Croix Preparatory Academy, Refunding Series 2016A:
155	4.000%, 8/01/36	8/26 at 100.00	BB+	142,749
440	4.000%, 8/01/41	8/26 at 100.00	BB+	397,131
2,000	Brooklyn Park, Minnesota, Charter School Lease Revenue Bonds, Prairie Seeds Academy Project, Refunding Series 2015A, 5.000%, 3/01/34	3/25 at 100.00	BB+	2,081,820
1,720	Deephaven, Minnesota, Charter School Lease Revenue Bonds, Eagle Ridge Academy Project, Series 2015A, 5.500%, 7/01/50	7/25 at 100.00	BB+	1,827,534
1,410	Minneapolis, Minnesota, Charter School Lease Revenue Bonds, Hiawatha Academies Project, Series 2016A, 5.000%, 7/01/47	7/24 at 102.00	N/R	1,402,894

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Minnesota (continued)
	Minneapolis, Minnesota, Health Care System Revenue Bonds, Fairview Health Services, Series 2008B:
$ 840	6.500%, 11/15/38 (Pre-refunded 11/15/18) – AGC Insured	11/18 at 100.00	A2 (6)	$899,850
4,625	6.500%, 11/15/38 – AGC Insured	11/18 at 100.00	A2	4,920,121
1,000	Minneapolis-Saint Paul Housing and Redevelopment Authority, Minnesota, Health Care Revenue Bonds, Children's Health Care, Series 2004A-1 Remarketed, 4.625%, 8/15/29 – AGM Insured	8/20 at 100.00	A2	1,066,540
1,205	Minnesota Higher Education Facilities Authority, Revenue Bonds, Bethel University, Refunding Series 2017, 5.000%, 5/01/47	5/27 at 100.00	BBB-	1,337,381
	Saint Cloud, Minnesota, Charter School Lease Revenue Bonds, Stride Academy Project, Series 2016A:
405	5.000%, 4/01/36	4/26 at 100.00	CCC-	307,780
605	5.000%, 4/01/46	4/26 at 100.00	CCC-	428,243
2,500	Saint Paul Housing and Redevelopment Authority, Minnesota, Health Care Facility Revenue Bonds, HealthPartners Obligated Group, Refunding Series 2015A, 4.000%, 7/01/35	7/25 at 100.00	A	2,615,675
235	Saint Paul Housing and Redevelopment Authority, Minnesota, Multifamily Housing Revenue Bonds, 2700 University at Westgate Station, Series 2015B, 4.250%, 4/01/25	4/23 at 100.00	N/R	239,735
	St. Paul Housing and Redevelopment Authority, Minnesota, Hospital Revenue Bonds, HealthEast Inc., Series 2015A:
900	5.250%, 11/15/35	11/20 at 100.00	BB+	963,513
2,785	5.000%, 11/15/40	11/25 at 100.00	BB+	3,008,218
3,190	5.000%, 11/15/44	11/25 at 100.00	BB+	3,433,971
24,015	Total Minnesota			25,073,155
	Mississippi – 0.2% (0.1% of Total Investments)
5,445	Mississippi Development Bank, Special Obligation Bonds, Gulfport Water and Sewer System Project, Series 2005, 5.250%, 7/01/24 – AGM Insured	No Opt. Call	A2	6,376,149
	Missouri – 1.7% (1.1% of Total Investments)
890	Bi-State Development Agency of the Missouri-Illinois Metropolitan District, Mass Transit Sales Tax Appropriation Bonds, Refunding Combined Lien Series 2013A, 5.000%, 10/01/28	10/18 at 100.00	Aa2	932,133
2,820	Chesterfield Valley Transportation Development District, Missouri, Transportation Sales Tax Revenue Bonds, Series 2015, 3.625%, 5/15/31	5/23 at 100.00	A-	2,853,417
	Kansas City Industrial Development Authority, Missouri, Sales Tax Revenue Bonds, Ward Parkway Center Community Improvement District, Senior Refunding & Improvement Series 2016:
400	5.000%, 4/01/36	4/26 at 100.00	N/R	385,948
1,520	5.000%, 4/01/46	4/26 at 100.00	N/R	1,417,704
15,000	Kansas City Municipal Assistance Corporation, Missouri, Leasehold Revenue Bonds, Series 2004B-1, 0.000%, 4/15/28 – AMBAC Insured	No Opt. Call	A1	10,848,000
3,345	Kirkwood Industrial Development Authority, Missouri, Retirement Community Revenue Bonds, Aberdeen Heights Project, Refunding Series 2017A, 5.250%, 5/15/50	5/27 at 100.00	BB	3,514,592

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Missouri (continued)
	Liberty, Missouri, Special Obligation Tax Increment and Special Districts Bonds, Liberty Commons Project, Series 2015A:
$ 1,575	5.750%, 6/01/35	6/25 at 100.00	N/R	$1,578,402
1,055	6.000%, 6/01/46	6/25 at 100.00	N/R	1,060,454
2,460	Missouri Health and Educational Facilities Authority, Educational Facilities Revenue Bonds, Saint Louis College of Pharmacy, Series 2013, 5.500%, 5/01/43	5/23 at 100.00	BBB	2,701,326
	Missouri Health and Educational Facilities Authority, Educational Facilities Revenue Bonds, Saint Louis College of Pharmacy, Series 2015B:
1,410	5.000%, 5/01/40	11/23 at 100.00	BBB	1,501,241
2,000	5.000%, 5/01/45	11/23 at 100.00	BBB	2,120,300
7,525	Missouri Health and Educational Facilities Authority, Health Facilities Revenue Bonds, CoxHealth, Series 2013A, 5.000%, 11/15/48	11/23 at 100.00	A2	8,261,773
2,250	Missouri Health and Educational Facilities Authority, Health Facilities Revenue Bonds, Heartland Regional Medical Center, Series 2012, 5.000%, 2/15/43	2/22 at 100.00	A1	2,454,570
1,010	Plaza at Noah's Ark Community Improvement District, Saint Charles, Missouri, Tax Increment and Improvement District Revenue Bonds, Series 2015, 5.000%, 5/01/30	5/21 at 100.00	N/R	1,032,321
4,125	Saint Louis, Missouri, Airport Revenue Bonds, Lambert-St. Louis International Airport, Series 2005, 5.500%, 7/01/29 – NPFG Insured	No Opt. Call	BBB+	5,158,849
15,350	Springfield Public Building Corporation, Missouri, Lease Revenue Bonds, Jordan Valley Park Projects, Series 2000A, 0.000%, 6/01/30 – AMBAC Insured	No Opt. Call	N/R	9,279,382
405	St. Louis County Industrial Development Authority, Missouri, Revenue Bonds, Friendship Village of Sunset Hills, Series 2013A, 5.875%, 9/01/43	9/23 at 100.00	A-	457,990
	St. Louis County Industrial Development Authority, Missouri, Revenue Bonds, Saint Andrew's Resources for Seniors, Series 2015A:
1,550	5.000%, 12/01/35	12/25 at 100.00	N/R	1,574,180
455	5.125%, 12/01/45	12/25 at 100.00	N/R	461,748
65,145	Total Missouri			57,594,330
	Montana – 0.2% (0.1% of Total Investments)
	Kalispell, Montana, Housing and Healthcare Facilities Revenue Bonds, Immanuel Lutheran Corporation, Series 2017A:
1,175	5.250%, 5/15/37	5/25 at 102.00	N/R	1,238,356
375	5.250%, 5/15/47	5/25 at 102.00	N/R	390,709
3,000	Montana Facility Finance Authority, Hospital Revenue Bonds, Benefits Health System Obligated Group, Series 2011A, 5.750%, 1/01/31 (Pre-refunded 1/01/21) – AGM Insured	1/21 at 100.00	A2 (6)	3,469,230
4,550	Total Montana			5,098,295
	Nebraska – 0.8% (0.5% of Total Investments)
4,435	Central Plains Energy Project, Nebraska, Gas Project 3 Revenue Bonds, Series 2012, 5.000%, 9/01/32	9/22 at 100.00	BBB+	4,850,205
580	Douglas County Hospital Authority 2, Nebraska, Health Facilities Revenue Bonds, Nebraska Methodist Health System, Refunding Series 2015, 5.000%, 11/01/45	11/25 at 100.00	A-	644,038
	Douglas County Hospital Authority 3, Nebraska, Health Facilities Revenue Bonds, Nebraska Methodist Health System, Refunding Series 2015:
2,090	4.125%, 11/01/36	11/25 at 100.00	A-	2,182,044
2,325	5.000%, 11/01/48	11/25 at 100.00	A-	2,576,402

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Nebraska (continued)
$ 4,010	Lincoln County Hospital Authority 1, Nebraska, Hospital Revenue and Refunding Bonds, Great Plains Regional Medical Center Project, Series 2012, 5.000%, 11/01/42	11/21 at 100.00	A-	$4,314,319
5,000	Municipal Energy Agency of Nebraska, Power Supply System Revenue and Refunding Bonds, Series 2009A, 5.375%, 4/01/39 (Pre-refunded 4/01/19) – BHAC Insured	4/19 at 100.00	A (6)	5,365,350
6,000	Scotts Bluff County Hospital Authority 1, Nebraska, Hospital Revenue Bonds, Regional West Medical Center Project, Refunding & Improvement Series 2016A, 5.250%, 2/20/37	2/27 at 100.00	BBB+	6,508,920
24,440	Total Nebraska			26,441,278
	Nevada – 1.6% (1.0% of Total Investments)
5,350	Clark County, Nevada, Airport Revenue Bonds, Subordinate Lien Series 2009C, 5.000%, 7/01/26 – AGM Insured	7/19 at 100.00	Aa3	5,750,982
	Clark County, Nevada, Passenger Facility Charge Revenue Bonds, Las Vegas-McCarran International Airport, Series 2010A:
24,020	5.250%, 7/01/39 – AGM Insured	1/20 at 100.00	Aa3	26,161,623
14,515	5.250%, 7/01/42	1/20 at 100.00	A+	15,773,015
1,000	Las Vegas, Nevada, Sales Tax Increment Revenue Bonds, Symphony Park Tourism Improvement District, Series 2016, 4.375%, 6/15/35	6/21 at 100.00	N/R	941,320
2,280	North Las Vegas, Nevada, General Obligation Bonds, Wastewater Reclamation System Series 2006, 5.000%, 10/01/25 – NPFG Insured	10/17 at 100.00	B+	2,280,411
1,100	Washoe County, Nevada, Highway Revenue, Motor Vehicle Fuel Tax Bonds, Series 2013, 5.000%, 2/01/38	2/19 at 100.00	A+	1,156,529
48,265	Total Nevada			52,063,880
	New Hampshire – 0.2% (0.1% of Total Investments)
5,000	New Hampshire Business Finance Authority, Revenue Bonds, Elliot Hospital Obligated Group Issue, Series 2009A, 6.125%, 10/01/39 (Pre-refunded 10/01/19)	10/19 at 100.00	BBB (6)	5,544,350
500	New Hampshire Health and Education Facilities Authority, Revenue Bonds, Kendal at Hanover, Series 2016, 5.000%, 10/01/40	10/26 at 100.00	BBB+	546,050
5,500	Total New Hampshire			6,090,400
	New Jersey – 7.5% (4.9% of Total Investments)
	New Jersey Economic Development Authority, Revenue Bonds, Motor Vehicle Surcharge, Series 2004A:
5,550	5.000%, 7/01/22 – NPFG Insured	10/17 at 100.00	A3	5,625,702
5,550	5.000%, 7/01/23 – NPFG Insured	10/17 at 100.00	A3	5,625,702
7,800	5.000%, 7/01/29 – NPFG Insured	10/17 at 100.00	A3	7,906,392
	New Jersey Economic Development Authority, School Facilities Construction Bonds, Series 2005N-1:
6,835	5.500%, 9/01/24 – AMBAC Insured	No Opt. Call	BBB+	7,778,367
5,000	5.500%, 9/01/28 – NPFG Insured	No Opt. Call	A3	5,948,200
11,975	New Jersey Economic Development Authority, School Facilities Construction Financing Program Bonds, Refunding Series 2015WW, 5.250%, 6/15/40	6/25 at 100.00	BBB+	12,698,649
	New Jersey Economic Development Authority, School Facilities Construction Financing Program Bonds, Refunding Series 2016BBB:
34,310	5.500%, 6/15/29	12/26 at 100.00	BBB+	37,995,923
2,110	5.500%, 6/15/30	12/26 at 100.00	BBB+	2,325,389

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	New Jersey (continued)
$ 2,335	New Jersey Economic Development Authority, School Facilities Construction Financing Program Bonds, Series 2012K-K, 5.000%, 3/01/23	9/22 at 100.00	BBB+	$2,523,738
600	New Jersey Health Care Facilities Financing Authority, New Jersey, Revenue Bonds, Saint Peters University Hospital, Refunding Series 2011, 6.000%, 7/01/26	7/21 at 100.00	BB+	653,406
1,500	New Jersey Health Care Facilities Financing Authority, New Jersey, Revenue Bonds, Saint Peters University Hospital, Series 2007, 5.750%, 7/01/37	7/18 at 100.00	BB+	1,532,655
2,325	New Jersey Health Care Facilities Financing Authority, Revenue Bonds, Barnabas Health, Refunding Series 2014A, 5.000%, 7/01/44	7/24 at 100.00	A+	2,572,124
	New Jersey Transportation Trust Fund Authority, Federal Highway Reimbursement Revenue Notes, Series 2016A-1:
5,945	5.000%, 6/15/27	6/26 at 100.00	Baa1	6,533,555
4,000	5.000%, 6/15/28	6/26 at 100.00	Baa1	4,359,760
2,015	New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Capital Appreciation Series 2010A, 0.000%, 12/15/26	No Opt. Call	BBB+	1,332,177
2,150	New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Refunding Series 2006A, 5.250%, 12/15/20	No Opt. Call	BBB+	2,315,507
20,000	New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Refunding Series 2006C, 0.000%, 12/15/33 – AGM Insured	No Opt. Call	A-	10,127,200
3,000	New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Series 2011B, 5.000%, 6/15/42	6/21 at 100.00	BBB+	3,079,950
20,040	New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Series 2014AA, 5.000%, 6/15/44	6/24 at 100.00	BBB+	20,811,740
	New Jersey Transportation Trust Fund Authority, Transportation System Bonds, Series 2015AA:
13,680	4.750%, 6/15/38	6/25 at 100.00	BBB+	13,963,039
5,245	5.250%, 6/15/41	6/25 at 100.00	BBB+	5,572,708
8,230	5.000%, 6/15/45	6/25 at 100.00	BBB+	8,464,061
33,200	New Jersey Turnpike Authority, Revenue Bonds, Refunding Series 2005D-1, 5.250%, 1/01/26 – AGM Insured	No Opt. Call	A2	41,301,464
200	New Jersey Turnpike Authority, Revenue Bonds, Tender Option Bond Trust 2016-XF1057, 14.697%, 1/01/43 (IF) (4)	7/22 at 100.00	A2	298,860
1,135	Rutgers State University, New Jersey, Revenue Bonds, Refunding Series 2013L, 5.000%, 5/01/43	5/23 at 100.00	A+	1,275,695
	Tobacco Settlement Financing Corporation, New Jersey, Tobacco Settlement Asset-Backed Bonds, Series 2007-1A:
1,430	4.500%, 6/01/23	10/17 at 100.00	Baa2	1,435,363
1,580	4.625%, 6/01/26	10/17 at 100.00	Ba3	1,572,211
19,150	5.000%, 6/01/29	10/17 at 100.00	B2	19,069,187
11,495	4.750%, 6/01/34	10/17 at 100.00	B3	10,955,884
1,330	Washington Township Board of Education, Mercer County, New Jersey, General Obligation Bonds, Series 2005, 5.250%, 1/01/26 – AGM Insured	No Opt. Call	A2	1,629,223
239,715	Total New Jersey			247,283,831
	New York – 4.9% (3.1% of Total Investments)
5,810	Build NYC Resource Corporation, New York, Revenue Bonds, Albert Einstein College of Medicine, Inc., Series 2015, 5.500%, 9/01/45	9/25 at 100.00	N/R	6,360,846

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	New York (continued)
$ 2,250	Dormitory Authority of the State of New York, Insured Revenue Bonds, Mount Sinai School of Medicine, Series 1994A, 5.150%, 7/01/24 – NPFG Insured	No Opt. Call	A3	$2,683,215
9,700	Dormitory Authority of the State of New York, Revenue Bonds, Columbia University, Series 2017A, 5.000%, 10/01/47 (UB) (4)	No Opt. Call	AAA	13,282,598
4,070	Dormitory Authority of the State of New York, Revenue Bonds, Icahn School of Medicine at Mount Sinai, Refunding Series 2015A, 5.000%, 7/01/45	7/25 at 100.00	A-	4,536,463
7,225	Dormitory Authority of the State of New York, Revenue Bonds, Non State Supported Debt, Cornell University, Series 2010A, 5.000%, 7/01/35	7/20 at 100.00	AA	7,988,755
	Dormitory Authority of the State of New York, Revenue Bonds, Orange Regional Medical Center Obligated Group, Series 2015:
2,700	5.000%, 12/01/40	6/25 at 100.00	BB+	2,944,350
5,600	5.000%, 12/01/45	6/25 at 100.00	BB+	6,071,072
5	Dormitory Authority of the State of New York, State Personal Income Tax Revenue Bonds, General Purpose, Series 2009A, 5.000%, 2/15/39 (Pre-refunded 2/15/19)	2/19 at 100.00	Aa1 (6)	5,310
	Dormitory Authority of the State of New York, State Personal Income Tax Revenue Bonds, Tender Option Bond Trust 2016-XF0525:
1,335	12.261%, 2/15/39 (IF)	2/19 at 100.00	Aa1	1,571,402
1,997	12.271%, 2/15/39 (IF)	2/19 at 100.00	Aa1	2,351,697
	Hudson Yards Infrastructure Corporation, New York, Revenue Bonds, Senior Fiscal 2012 Series 2011A:
2,400	5.250%, 2/15/47	2/21 at 100.00	AA-	2,680,776
340	5.750%, 2/15/47	2/21 at 100.00	AA-	391,255
510	5.750%, 2/15/47 (Pre-refunded 2/15/21)	2/21 at 100.00	Aa3 (6)	591,896
6,075	Long Island Power Authority, New York, Electric System Revenue Bonds, Series 2011A, 5.000%, 5/01/36 – AGM Insured	5/21 at 100.00	A-	6,760,442
10,000	Long Island Power Authority, New York, Electric System Revenue Bonds, Series 2012A, 5.000%, 9/01/42	9/22 at 100.00	A-	11,087,900
4,315	Monroe County Industrial Development Corporation, New York, FHA Insured Mortgage Revenue Bonds, Unity Hospital of Rochester Project, Series 2010, 5.500%, 8/15/40	2/21 at 100.00	AA	4,875,821
1,000	Nassau County Local Economic Assistance Corporation, New York, Revenue Bonds, Catholic Health Services of Long Island Obligated Group Project, Series 2014, 5.000%, 7/01/31	7/24 at 100.00	Baa1	1,120,750
1,665	Nassau County Tobacco Settlement Corporation, New York, Tobacco Settlement Asset-Backed Bonds, Series 2006A-3, 5.000%, 6/01/35	12/17 at 100.00	B-	1,631,783
4,050	New York City Industrial Development Agency, New York, Revenue Bonds, Yankee Stadium Project PILOT, Series 2009A, 7.000%, 3/01/49 – AGC Insured	3/19 at 100.00	A3	4,425,840
11,570	New York City Municipal Water Finance Authority, New York, Water and Sewer System Second General Resolution Revenue Bonds, Fiscal 2016 Series BB-1, 5.000%, 6/15/46 (UB)	6/25 at 100.00	AA+	13,251,237
	New York City, New York, General Obligation Bonds, Fiscal Series 2002G:
10	5.000%, 8/01/17	No Opt. Call	AA	10,000
75	5.750%, 8/01/18	10/17 at 100.00	AA	75,274
5	New York City, New York, General Obligation Bonds, Fiscal Series 2005M, 5.000%, 4/01/26 – FGIC Insured	10/17 at 100.00	AA	5,015
31,615	New York Liberty Development Corporation, New York, Liberty Revenue Bonds, 3 World Trade Center Project, Class 1 Series 2014, 5.000%, 11/15/44	11/24 at 100.00	N/R	34,323,141

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	New York (continued)
$ 40	New York State Housing Finance Agency, Mortgage Revenue Refunding Bonds, Housing Project, Series 1996A, 6.125%, 11/01/20 – AGM Insured	11/17 at 100.00	A2	$40,112
5,655	Onondaga Civic Development Corporation, New York, Revenue Bonds, Saint Joseph's Hospital Health Center Project, Series 2012, 5.000%, 7/01/42 (Pre-refunded 7/01/22)	7/22 at 100.00	N/R (6)	6,660,289
	Port Authority of New York and New Jersey, Special Project Bonds, JFK International Air Terminal LLC Project, Eighth Series 2010:
8,550	5.500%, 12/01/31	12/20 at 100.00	BBB	9,451,768
3,155	6.000%, 12/01/36	12/20 at 100.00	BBB	3,549,344
1,275	Triborough Bridge and Tunnel Authority, New York, General Purpose Revenue Bonds, Refunding Subordinate Lien Series 2013A, 0.000%, 11/15/32	No Opt. Call	A+	783,449
10,360	TSASC Inc., New York, Tobacco Asset-Backed Bonds, Series 2006, 5.000%, 6/01/48	6/27 at 100.00	N/R	10,532,390
143,357	Total New York			160,044,190
	North Carolina – 1.0% (0.6% of Total Investments)
3,000	Charlotte-Mecklenburg Hospital Authority, North Carolina, Health Care Revenue Bonds, DBA Carolinas HealthCare System, Series 2008A, 5.000%, 1/15/47 (Pre-refunded 1/15/18)	1/18 at 100.00	AA- (6)	3,057,540
1,255	North Carolina Medical Care Commission, Health Care Facilities Revenue Bonds, Duke University Health System, Series 2009A, 5.000%, 6/01/39 (Pre-refunded 6/01/19)	6/19 at 100.00	Aa2 (6)	1,347,857
10,000	North Carolina Medical Care Commission, Health Care Facilities Revenue Bonds, Duke University Health System, Series 2012A, 5.000%, 6/01/42	6/22 at 100.00	AA	11,160,200
4,715	North Carolina Medical Care Commission, Health Care Facilities Revenue Bonds, Vidant Health, Refunding Series 2012A, 5.000%, 6/01/36	6/22 at 100.00	A+	5,275,708
2,150	North Carolina Medical Care Commission, Health Care Facilities Revenue Bonds, WakeMed, Refunding Series 2012A, 5.000%, 10/01/38	10/22 at 100.00	A2	2,398,992
	North Carolina Medical Care Commission, Health System Revenue Bonds, Mission Health Combined Group, Series 2007:
1,495	4.500%, 10/01/31 (Pre-refunded 10/01/17)	10/17 at 100.00	N/R (6)	1,504,149
2,505	4.500%, 10/01/31 (Pre-refunded 10/01/17)	10/17 at 100.00	AA- (6)	2,520,531
2,150	North Carolina Medical Care Commission, Retirement Facilities First Mortgage Revenue Bonds, Aldersgate United Retirement Community Inc., Refunding Series 2017A, 5.000%, 7/01/47	7/27 at 100.00	N/R	2,268,444
1,690	North Carolina Turnpike Authority, Monroe Expressway Toll Revenue Bonds, Series 2017A, 5.000%, 7/01/54	7/26 at 100.00	BBB-	1,858,780
540	Oak Island, North Carolina, Enterprise System Revenue Bonds, Series 2009, 6.000%, 6/01/34 (Pre-refunded 6/01/19) – AGC Insured	6/19 at 100.00	A2 (6)	589,642
830	University of North Carolina, Greensboro, General Revenue Bonds, Series 2014, 5.000%, 4/01/39	4/24 at 100.00	A+	936,813
30,330	Total North Carolina			32,918,656
	North Dakota – 0.7% (0.5% of Total Investments)
	Grand Forks, North Dakota, Health Care System Revenue Bonds, Altru Health System Obligated Group, Series 2012:
7,000	5.000%, 12/01/29	12/21 at 100.00	Baa1	7,655,690
3,000	5.000%, 12/01/32	12/21 at 100.00	Baa1	3,244,530
2,245	5.000%, 12/01/35	12/21 at 100.00	Baa1	2,417,573
4,525	Grand Forks, North Dakota, Health Care System Revenue Bonds, Altru Health System Obligated Group, Series 2017A, 5.000%, 12/01/42	12/27 at 100.00	Baa1	5,092,390

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	North Dakota (continued)
$ 1,000	Grand Forks, North Dakota, Senior Housing & Nursing Facilities Revenue Bonds, Valley Homes and Services Obligated Group, Series 2017, 5.000%, 12/01/36	12/26 at 100.00	N/R	$1,013,260
	Williston Parks and Recreation District, North Dakota, Sales Tax & Gross Revenue Bonds, Series 2012A:
600	3.000%, 3/01/18	No Opt. Call	B	594,690
970	4.000%, 3/01/19	No Opt. Call	B	960,455
1,085	5.000%, 3/01/21	No Opt. Call	B	1,075,571
2,535	Williston, North Dakota, Multifamily Housing Revenue Bonds, Eagle Crest Apartments LLC Project, Series 2013, 7.750%, 9/01/38 (8)	9/23 at 100.00	N/R	1,267,424
22,960	Total North Dakota			23,321,583
	Ohio – 9.5% (6.2% of Total Investments)
4,185	Akron, Bath and Copley Joint Township Hospital District, Ohio, Hospital Revenue Bonds, Children's Hospital Medical Center, Improvement & Refunding Series 2012, 5.000%, 11/15/42	5/22 at 100.00	A1	4,503,311
	Allen County, Ohio, Hospital Facilities Revenue Bonds, Catholic Health Partners, Refunding and Improvement Series 2012A:
2,540	4.000%, 5/01/33	5/22 at 100.00	A2	2,612,974
1,930	5.000%, 5/01/33	5/22 at 100.00	A2	2,117,538
3,405	5.000%, 5/01/42	5/22 at 100.00	A2	3,701,099
	American Municipal Power Ohio Inc., Prairie State Energy Campus Project Revenue Bonds, Series 2008A:
595	5.250%, 2/15/43	2/18 at 100.00	A	607,257
9,405	5.250%, 2/15/43 (Pre-refunded 2/15/18)	2/18 at 100.00	N/R (6)	9,628,369
	Buckeye Tobacco Settlement Financing Authority, Ohio, Tobacco Settlement Asset-Backed Revenue Bonds, Senior Lien, Series 2007A-2:
45,260	5.125%, 6/01/24	10/17 at 100.00	Caa1	42,413,599
17,305	5.375%, 6/01/24	10/17 at 100.00	Caa1	16,806,097
20,820	5.875%, 6/01/30	10/17 at 100.00	Caa1	19,743,606
28,135	5.750%, 6/01/34	10/17 at 100.00	Caa1	26,699,834
2,715	6.000%, 6/01/42	10/17 at 100.00	B-	2,544,389
19,115	5.875%, 6/01/47	10/17 at 100.00	B-	18,104,772
10,000	Buckeye Tobacco Settlement Financing Authority, Ohio, Tobacco Settlement Asset-Backed Revenue Bonds, Senior Lien, Series 2007A-3, 6.250%, 6/01/37	6/22 at 100.00	Caa1	10,015,800
1,000	Butler County Port Authority, Ohio, Revenue Bonds, StoryPoint Fairfield Project, Senior Series 2017A-1, 6.250%, 1/15/34	1/24 at 104.00	N/R	1,019,970
	Centerville, Ohio, Health Care Improvement Revenue Bonds, Graceworks Lutheran Services, Refunding & Improvement Series 2017:
2,750	5.250%, 11/01/37	11/27 at 100.00	N/R	2,940,988
3,200	5.250%, 11/01/47	11/27 at 100.00	N/R	3,384,320
10,000	Chillicothe, Ohio, Hospital Facilities Revenue Bonds, Adena Health System Obligated Group Project, Refunding & Improvement Series 2017, 4.000%, 12/01/42	12/27 at 100.00	A-	10,126,500
8,310	Cleveland Heights-University Heights City School District, Ohio, General Obligation Bonds, School Improvement Series 2014, 5.000%, 12/01/51	6/23 at 100.00	Aa3	9,336,202
7,870	Franklin County, Ohio, Hospital Revenue Bonds, Nationwide Children's Hospital Project, Improvement Series 2012A, 5.000%, 11/01/42	5/22 at 100.00	Aa2	8,565,314

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Ohio (continued)
$ 6,425	JobsOhio Beverage System, Ohio, Statewide Liquor Profits Revenue Bonds, Senior Lien Series 2013A, 5.000%, 1/01/38 (UB) (4)	1/23 at 100.00	Aa3	$7,201,012
	JobsOhio Beverage System, Ohio, Statewide Senior Lien Liquor Profits Revenue Bonds, Tender Option Bond Trust 2016-XG0052:
390	15.383%, 1/01/38 (IF) (4)	1/23 at 100.00	Aa3	576,978
1,750	15.483%, 1/01/38 (IF) (4)	1/23 at 100.00	Aa3	2,594,988
625	15.491%, 1/01/38 (IF) (4)	1/23 at 100.00	Aa3	926,950
1,250	15.491%, 1/01/38 (IF) (4)	1/23 at 100.00	Aa3	1,853,900
1,725	15.491%, 1/01/38 (IF) (4)	1/23 at 100.00	Aa3	2,558,382
2,000	15.491%, 1/01/38 (IF) (4)	1/23 at 100.00	Aa3	2,966,240
2,885	Lucas County, Ohio, Hospital Revenue Bonds, ProMedica Healthcare Obligated Group, Series 2011A, 6.000%, 11/15/41	11/21 at 100.00	A1	3,340,195
	Middletown City School District, Butler County, Ohio, General Obligation Bonds, Refunding Series 2007:
4,380	5.250%, 12/01/27 – AGM Insured	No Opt. Call	A2	5,399,576
6,000	5.250%, 12/01/31 – AGM Insured	No Opt. Call	A2	7,440,120
12,000	Muskingum County, Ohio, Hospital Facilities Revenue Bonds, Genesis HealthCare System Obligated Group Project, Series 2013, 5.000%, 2/15/48	2/23 at 100.00	Ba2	12,488,520
19,920	Ohio Air Quality Development Authority, Ohio, Pollution Control Revenue Bonds, FirstEnergy Nuclear Generation Project, Refunding Series 2009A, 4.375%, 6/01/33 (Mandatory Put 6/01/22)	No Opt. Call	CCC+	19,107,662
4,975	Ohio Turnpike Commission, Turnpike Revenue Bonds, Infrastructure Project, Junior Lien Series 2013A-1, 5.000%, 2/15/48	2/23 at 100.00	A+	5,572,000
1,240	Ohio Turnpike Commission, Turnpike Revenue Bonds, Infrastructure Projects, Junior Lien Convertible Series 2013A-3, 0.000%, 2/15/36 (7)	2/31 at 100.00	A+	1,200,221
20,405	Ohio Water Development Authority, Pollution Control Revenue Refunding Bonds, FirstEnergy Nuclear Generating Corporation Project, Series 2009A, 4.375%, 6/01/33 (Mandatory Put 6/01/22)	No Opt. Call	CCC+	19,572,884
20,010	Ohio Water Development Authority, Pollution Control Revenue Refunding Bonds, FirstEnergy Nuclear Generating Corporation Project, Series 2010B, 4.375%, 6/01/33 (Mandatory Put 6/01/22)	No Opt. Call	CCC+	19,193,992
	Southeastern Ohio Port Authority, Hospital Facilities Revenue Bonds, Memorial Health System Obligated Group Project, Refunding and Improvement Series 2012:
1,095	5.750%, 12/01/32	12/22 at 100.00	BB	1,203,022
870	6.000%, 12/01/42	12/22 at 100.00	BB	959,358
1,365	Toledo Lucas County Port Authority, Ohio, Revenue Bonds, Storypoint Waterville Project, Series 2016A-1, 6.125%, 1/15/34	1/24 at 104.00	N/R	1,394,907
1,330	Tuscarawas County Economic Development and Finance Alliance, Ohio, Higher Education Facilities Revenue Bonds, Ashland University, Refunding & Improvement Series 2015, 6.000%, 3/01/45	3/25 at 100.00	N/R	1,384,916
2,000	University of Akron, Ohio, General Receipts Bonds, Federally Taxable Build America Bonds, Series 2010B, 5.000%, 1/01/29 – AGM Insured	1/20 at 100.00	A1	2,173,480
311,180	Total Ohio			313,981,242
	Oklahoma – 0.4% (0.2% of Total Investments)
1,400	Fort Sill Apache Tribe of Oklahoma Economic Development Authority, Gaming Enterprise Revenue Bonds, Fort Sill Apache Casino, Series 2011A, 8.500%, 8/25/26	8/21 at 100.00	N/R	1,634,808

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Oklahoma (continued)
$ 3,500	Grand River Dam Authority, Oklahoma, Revenue Bonds, Series 2010A, 5.250%, 6/01/40	6/20 at 100.00	A1	$3,849,790
	Oklahoma City Water Utilities Trust, Oklahoma, Water and Sewer Revenue Bonds, Series 2011:
1,500	5.000%, 7/01/40	7/21 at 100.00	AAA	1,676,820
1,000	5.375%, 7/01/40	7/21 at 100.00	AAA	1,136,440
1,675	Oklahoma Development Finance Authority, Health System Revenue Bonds, Integris Baptist Medical Center, Series 2008B, 5.250%, 8/15/38 (Pre-refunded 8/15/18)	8/18 at 100.00	AA- (6)	1,750,258
2,340	Tulsa County Industrial Authority, Oklahoma, Senior Living Community Revenue Bonds, Montereau, Inc Project, Refunding Series 2017, 5.250%, 11/15/45	11/25 at 102.00	BBB-	2,559,047
11,415	Total Oklahoma			12,607,163
	Oregon – 0.3% (0.2% of Total Investments)
	Multnomah County Hospital Facilities Authority, Oregon, Revenue Bonds, Mirabella South Waterfront, Refunding Series 2014A:
1,000	5.400%, 10/01/44	10/24 at 100.00	N/R	1,074,890
800	5.500%, 10/01/49	10/24 at 100.00	N/R	853,896
	Oregon Department of Administrative Services, State Lottery Revenue Bonds, Series 2011A:
555	5.250%, 4/01/31	4/21 at 100.00	Aa2	629,986
3,445	5.250%, 4/01/31 (Pre-refunded 4/01/21)	4/21 at 100.00	N/R (6)	3,960,716
3,000	Oregon State Department of Transportation, Highway User Tax Revenue Bonds, Senior Lien Series 2009A, 5.000%, 11/15/33 (Pre-refunded 5/15/19)	5/19 at 100.00	Aa1 (6)	3,216,630
8,800	Total Oregon			9,736,118
	Pennsylvania – 6.2% (4.0% of Total Investments)
	Allegheny Country Industrial Development Authority, Pennsylvania, Environmental Improvement Revenue Bonds, United States Steel Corporation Project, Refunding Series 2009:
170	6.750%, 11/01/24	11/19 at 100.00	Caa1	177,373
195	6.875%, 5/01/30	11/19 at 100.00	Caa1	199,064
2,000	Allegheny County Hospital Development Authority, Pennsylvania, Revenue Bonds, University of Pittsburgh Medical Center, Series 2009A, 5.625%, 8/15/39	8/19 at 100.00	A+	2,155,380
3,335	Allegheny County Sanitary Authority, Pennsylvania, Sewer Revenue Bonds, Refunding Series 2010, 5.000%, 6/01/40 – AGM Insured	12/20 at 100.00	A1	3,695,714
	Allentown Neighborhood Improvement Zone Development Authority, Pennsylvania, Tax Revenue Bonds, City Center Refunding Project, Series 2017:
2,250	5.000%, 5/01/32	5/27 at 100.00	Ba1	2,393,910
2,540	5.000%, 5/01/42	5/27 at 100.00	Ba1	2,652,776
7,750	Beaver County Industrial Development Authority, Pennsylvania, Pollution Control Revenue Refunding Bonds, FirstEnergy Generation Project, Series 2008B, 4.250%, 10/01/47 (Mandatory Put 4/01/21)	No Opt. Call	CCC+	7,431,242
13,235	Beaver County Industrial Development Authority, Pennsylvania, Pollution Control Revenue Refunding Bonds, FirstEnergy Nuclear Generation Project, Series 2006A, 4.375%, 1/01/35 (Mandatory Put 7/01/22)	No Opt. Call	CCC+	12,695,144

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Pennsylvania (continued)
	Bucks County Industrial Development Authority, Pennsylvania, Revenue Bonds, School Lane Charter School Project, Series 2016:
$ 2,410	5.125%, 3/15/36	3/27 at 100.00	BBB-	$2,548,647
6,420	5.125%, 3/15/46	3/27 at 100.00	BBB-	6,692,529
	Chester County Health and Educational Facilities Authority, Pennsylvania, Health System Revenue Bonds, Jefferson Health System, Series 2010A:
1,580	5.000%, 5/15/40	5/20 at 100.00	AA	1,698,089
4,435	5.000%, 5/15/40 (Pre-refunded 5/15/20)	5/20 at 100.00	N/R (6)	4,917,794
1,000	Cumberland County Municipal Authority, Pennsylvania, Revenue Bonds, Diakon Lutheran Social Ministries Project, Series 2015, 5.000%, 1/01/29	1/25 at 100.00	BBB+	1,113,790
7,630	Dauphin County General Authority, Pennsylvania, Health System Revenue Bonds, Pinnacle Health System Project, Series 2012A, 5.000%, 6/01/42	6/22 at 100.00	A3	8,315,098
8,750	Delaware River Port Authority, New Jersey and Pennsylvania, Revenue Bonds, Series 2010E, 5.000%, 1/01/40 – AGM Insured	1/20 at 100.00	A2	9,489,287
1,250	Lancaster County Hospital Authority, Pennsylvania, Revenue Bonds, Landis Homes Retirement Community Project, Refunding Series 2015A, 5.000%, 7/01/45	7/25 at 100.00	BBB-	1,334,063
1,500	Lehigh County Authority, Pennsylvania, Water and Sewer Revenue Bonds, Allentown Concession, Series 2013A, 5.125%, 12/01/47	12/23 at 100.00	A	1,674,765
	Montgomery County Industrial Development Authority, Pennsylvania, FHA Insured Mortgage Revenue Bonds, New Regional Medical Center Project, Series 2010:
7,970	5.250%, 8/01/33 (Pre-refunded 8/01/20)	8/20 at 100.00	N/R (6)	8,961,866
5,295	5.375%, 8/01/38 (Pre-refunded 8/01/20)	8/20 at 100.00	N/R (6)	5,973,501
	Montgomery County Industrial Development Authority, Pennsylvania, Health System Revenue Bonds, Albert Einstein Healthcare Network Issue, Series 2015A:
10,450	5.250%, 1/15/45	1/25 at 100.00	Baa2	11,249,843
1,150	5.250%, 1/15/46	1/25 at 100.00	Baa2	1,238,021
11,810	Pennsylvania Economic Development Financing Authority, Exempt Facilities Revenue Refunding Bonds, PPL Energy Supply, LLC Project, Series 2009A, 6.400%, 12/01/38	9/25 at 100.00	B1	12,170,087
4,435	Pennsylvania Housing Finance Agency, Single Family Mortgage Revenue Bonds, Series 2016-120, 3.200%, 4/01/40	10/25 at 100.00	Aa2	4,309,179
3,705	Pennsylvania Turnpike Commission, Turnpike Revenue Bonds, Series 2015A-1, 5.000%, 12/01/45	6/25 at 100.00	A	4,135,150
11,000	Pennsylvania Turnpike Commission, Turnpike Revenue Bonds, Subordinate Series 2009C, 6.250%, 6/01/33 – AGM Insured	6/26 at 100.00	A2	14,225,640
15,000	Pennsylvania Turnpike Commission, Turnpike Revenue Bonds, Subordinate Series 2015B-1, 5.000%, 12/01/45	12/25 at 100.00	A-	16,630,650
10,080	Philadelphia Hospitals and Higher Education Facilities Authority, Pennsylvania, Hospital Revenue Bonds, Temple University Health System Obligated Group, Series 2012A, 5.625%, 7/01/42	7/22 at 100.00	Ba1	10,853,539
	Philadelphia, Pennsylvania, Airport Revenue Bonds, Series 2010A:
5,000	5.000%, 6/15/35 – AGM Insured	6/20 at 100.00	A2	5,432,600
17,850	5.000%, 6/15/40 – AGM Insured	6/20 at 100.00	A2	19,394,382
7,055	Pittsburgh and Allegheny County Sports and Exhibition Authority, Pennsylvania, Hotel Room Excise Tax Revenue Bonds, Refunding Series 2010, 5.000%, 2/01/35 – AGC Insured	8/20 at 100.00	A2	7,688,962

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Pennsylvania (continued)
$ 5,180	Pittsburgh and Allegheny County Sports and Exhibition Authority, Pennsylvania, Sales Tax Revenue Bonds, Refunding Series 2010, 5.000%, 2/01/31 – AGM Insured	8/20 at 100.00	A1	$5,664,744
	Scranton, Pennsylvania, Sewer Authority Revenue Bonds, Series 2011A:
1,125	5.250%, 12/01/31 (Pre-refunded 12/01/21) – AGM Insured	12/21 at 100.00	AA (6)	1,317,589
1,000	5.500%, 12/01/35 (Pre-refunded 12/01/21) – AGM Insured	12/21 at 100.00	AA (6)	1,181,710
5,790	Susquehanna Area Regional Airport Authority, Pennsylvania, Airport System Revenue Bonds, Series 2012B, 4.000%, 1/01/33	1/23 at 100.00	BB+	5,724,805
190,345	Total Pennsylvania			205,336,933
	Puerto Rico – 0.6% (0.4% of Total Investments)
590	Puerto Rico Highway and Transportation Authority, Highway Revenue Bonds, Series 2004J, 5.000%, 7/01/29 – NPFG Insured	1/18 at 100.00	A3	590,696
	Puerto Rico Sales Tax Financing Corporation, Sales Tax Revenue Bonds, Series 2007A:
50,000	0.000%, 8/01/47 – AMBAC Insured	No Opt. Call	D	9,349,000
86,250	0.000%, 8/01/54 – AMBAC Insured	No Opt. Call	D	11,067,600
136,840	Total Puerto Rico			21,007,296
	Rhode Island – 1.0% (0.7% of Total Investments)
1,725	Providence Housing Development Corporation, Rhode Island, FHA-Insured Section 8 Assisted Mortgage Revenue Refunding Bonds, Barbara Jordan Apartments, Series 1994A, 6.750%, 7/01/25 – NPFG Insured	1/18 at 100.00	A3	1,730,434
1,000	Rhode Island Health and Educational Building Corporation, Revenue Bonds, Care New England Health System, Series 2013A, 6.000%, 9/01/33 (Pre-refunded 9/01/23)	9/23 at 100.00	BB (6)	1,252,640
283,930	Rhode Island Tobacco Settlement Financing Corporation, Tobacco Settlement Asset-Backed Bonds, Series 2007A, 0.000%, 6/01/52	10/17 at 12.91	CCC+	30,124,973
286,655	Total Rhode Island			33,108,047
	South Carolina – 2.7% (1.8% of Total Investments)
7,600	Piedmont Municipal Power Agency, South Carolina, Electric Revenue Bonds, Series 2004A-2, 0.000%, 1/01/31 – AMBAC Insured	No Opt. Call	A-	4,828,280
3,600	Saint Peters Parish/Jasper County Public Facilities Corporation, South Carolina, Installment Purchase Revenue Bonds, County Office Building Projects, Series 2011A, 5.250%, 4/01/44 (Pre-refunded 4/01/21) – AGC Insured	4/21 at 100.00	A2 (6)	4,141,728
1,250	South Carolina Jobs-Economic Development Authority, Hospital Revenue Bonds, Palmetto Health, Refunding Series 2011A, 6.500%, 8/01/39 – AGM Insured	8/21 at 100.00	BBB+	1,458,913
20	South Carolina Public Service Authority, Revenue Obligation Bonds, Santee Cooper Electric System, Series 2008A, 5.500%, 1/01/38 (Pre-refunded 1/01/19)	1/19 at 100.00	A1 (6)	21,291
	South Carolina Public Service Authority, Santee Cooper Revenue Obligations, Refunding & Improvement Series 2015A:
5,000	5.000%, 12/01/50	6/25 at 100.00	A1	5,464,950
6,000	5.000%, 12/01/55	6/25 at 100.00	A1	6,557,460
	South Carolina Public Service Authority, Santee Cooper Revenue Obligations, Refunding Series 2014C:
5,000	5.000%, 12/01/46	12/24 at 100.00	A1	5,449,100
34,790	5.000%, 12/01/46 (UB)	12/24 at 100.00	A+	37,914,838
1,310	South Carolina Public Service Authority, Santee Cooper Revenue Obligations, Series 2013A, 5.125%, 12/01/43	12/23 at 100.00	A1	1,435,380

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	South Carolina (continued)
$ 10,195	South Carolina Public Service Authority, Santee Cooper Revenue Obligations, Series 2014A, 5.500%, 12/01/54	6/24 at 100.00	A1	$11,551,547
10,250	Spartanburg Regional Health Services District, Inc., South Carolina, Hospital Revenue Refunding Bonds, Series 2012A, 5.000%, 4/15/32	4/22 at 100.00	A2	11,385,392
85,015	Total South Carolina			90,208,879
	South Dakota – 0.2% (0.1% of Total Investments)
	South Dakota Health and Educational Facilities Authority, Revenue Bonds, Avera Health, Series 2012A:
250	5.000%, 7/01/27	7/21 at 100.00	A1	276,920
4,350	5.000%, 7/01/42	7/21 at 100.00	A1	4,719,402
910	South Dakota Health and Educational Facilities Authority, Revenue Bonds, Sanford Health, Series 2015, 5.000%, 11/01/45	11/25 at 100.00	A+	1,022,285
5,510	Total South Dakota			6,018,607
	Tennessee – 1.0% (0.6% of Total Investments)
12,795	Chattanooga Health, Educational and Housing Facility Board, Tennessee, Revenue Bonds, Catholic Health Initiatives, Series 2013A, 5.250%, 1/01/45	1/23 at 100.00	BBB+	13,534,679
2,350	Chattanooga-Hamilton County Hospital Authority, Tennessee, Hospital Revenue Bonds, Erlanger Health System, Refunding Series 2014A, 5.000%, 10/01/39	10/24 at 100.00	Baa2	2,563,827
	Metropolitan Government of Nashville-Davidson County Health and Educational Facilities Board, Tennessee, Revenue Bonds, Vanderbilt University Medical Center, Series 2016A:
4,900	5.000%, 7/01/40	7/26 at 100.00	A3	5,546,898
525	5.000%, 7/01/46	7/26 at 100.00	A3	589,990
10,000	The Health and Educational Facilities Board of the City of Franklin, Tennessee, Revenue Bonds, Provision Cares Proton Therapy Center, Nashville Project, Series 2017A, 7.500%, 6/01/47	6/27 at 100.00	N/R	10,200,300
30,570	Total Tennessee			32,435,694
	Texas – 12.4% (8.0% of Total Investments)
735	Arlington Higher Education Finance Corporation, Texas, Education Revenue Bonds, Wayside Schools, Series 2016A, 4.375%, 8/15/36	8/21 at 100.00	BB+	707,386
3,855	Aubrey, Denton County, Texas, Special Assessment Revenue Bonds, Jackson Ridge Public Improvement District Phase 1 Project, Series 2015, 7.250%, 9/01/45	3/23 at 103.00	N/R	3,869,649
3,450	Aubrey, Denton County, Texas, Special Assessment Revenue Bonds, Jackson Ridge Public Improvement District Phases 2-3 Major Improvements Project, Series 2015, 8.250%, 9/01/40	3/23 at 103.00	N/R	3,461,351
5,480	Austin, Texas, Electric Utility System Revenue Bonds, Refunding Series 2015A, 5.000%, 11/15/45 (UB) (4)	11/25 at 100.00	Aa3	6,320,084
6,685	Bexar County, Texas, Venue Project Revenue Bonds, Refunding Series 2010, 5.500%, 8/15/49 – AGM Insured	8/19 at 100.00	A-	7,128,349
2,500	Board of Managers, Joint Guadalupe County-Seguin City Hospital, Texas, Hospital Mortgage Revenue Bonds, Refunding & Improvement Series 2015, 5.000%, 12/01/45	12/25 at 100.00	BB	2,592,950
2,440	Celina, Texas, Special Assessment Revenue Bonds, Sutton Fields II Public Improvement District Neighborhood Improvement Area 1 Project, Series 2015, 7.250%, 9/01/45	3/23 at 103.00	N/R	2,463,936
4,300	Celina, Texas, Special Assessment Revenue Bonds, Sutton Fields II Public Improvement District Neighborhood Improvement Areas 2-5 Major Improvement Project, Series 2015, 8.250%, 9/01/40	3/23 at 103.00	N/R	4,339,904

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Texas (continued)
$ 405	Celina, Texas, Special Assessment Revenue Bonds, Wells South Public Improvement District Neighborhood Improvement Area 1 Project, Series 2015, 6.250%, 9/01/45	9/24 at 100.00	N/R	$412,428
	Central Texas Regional Mobility Authority, Revenue Bonds, Senior Lien Series 2011:
1,500	5.750%, 1/01/31 (Pre-refunded 1/01/21)	1/21 at 100.00	Baa2 (6)	1,730,235
1,700	6.250%, 1/01/46 (Pre-refunded 1/01/21)	1/21 at 100.00	Baa2 (6)	1,989,340
13,685	Central Texas Regional Mobility Authority, Revenue Bonds, Senior Lien, Series 2015A, 5.000%, 1/01/45	7/25 at 100.00	Baa2	15,339,380
18,925	Central Texas Regional Mobility Authority, Revenue Bonds, Senior Lien, Series 2016, 3.375%, 1/01/41	1/26 at 100.00	Baa2	17,190,902
1,270	Clifton Higher Education Finance Corporation, Texas, Education Revenue Bonds, Idea Public Schools, Series 2012, 3.750%, 8/15/22	No Opt. Call	BBB	1,328,153
	Clifton Higher Education Finance Corporation, Texas, Education Revenue Bonds, Uplift Education Charter School, Series 2013A:
765	4.350%, 12/01/42	12/22 at 100.00	BBB-	772,214
685	4.400%, 12/01/47	12/22 at 100.00	BBB-	691,453
4,000	Clifton Higher Education Finance Corporation, Texas, Education Revenue Bonds, Uplift Education Charter School, Series 2015A, 5.000%, 12/01/45	6/25 at 100.00	BBB-	4,299,920
	Club Municipal Management District 1, Texas, Special Assessment Revenue Bonds, Improvement Area 1 Project, Series 2016:
765	5.750%, 9/01/28	9/23 at 103.00	N/R	751,452
770	6.500%, 9/01/46	9/23 at 103.00	N/R	748,232
11,735	Dallas-Fort Worth International Airport, Texas, Joint Revenue Bonds, Refunding and Improvement Bonds, Series 2012C, 5.000%, 11/01/45 – AGM Insured	11/21 at 100.00	A	13,073,377
2,330	Decatur Hospital Authority, Texas, Revenue Bonds, Wise Regional Health System, Series 2013A, 6.375%, 9/01/42	9/23 at 100.00	N/R	2,628,100
400	Decatur Hospital Authority, Texas, Revenue Bonds, Wise Regional Health System, Series 2014A, 5.250%, 9/01/44	9/24 at 100.00	BB+	424,356
1,255	Fort Bend County Industrial Development Corporation, Texas, Revenue Bonds, NRG Energy Inc. Project, Series 2012A. RMKT, 4.750%, 5/01/38	11/22 at 100.00	Baa3	1,292,035
8,920	Fort Bend County Industrial Development Corporation, Texas, Revenue Bonds, NRG Energy Inc. Project, Series 2012B, 4.750%, 11/01/42	11/22 at 100.00	Baa3	9,183,229
	Grand Parkway Transportation Corporation, Texas, System Toll Revenue Bonds, Subordinate Lien Series 2013B:
20,000	5.250%, 10/01/51	10/23 at 100.00	AA	23,254,800
10,000	5.000%, 4/01/53 (UB)	10/23 at 100.00	Aa3	11,423,200
5,470	Grand Parkway Transportation Corporation, Texas, System Toll Revenue Bonds, Tender Option Bond Trust 2015-XF0228, 15.489%, 4/01/53 (IF)	10/23 at 100.00	AA	8,584,837
4,255	Harris County Cultural Education Facilities Finance Corporation, Texas, Revenue Bonds, Houston Methodist Hospital System, Series 2015, 5.000%, 12/01/45	6/25 at 100.00	AA	4,728,837
1,545	Harris County Metropolitan Transit Authority, Texas, Sales and Use Tax Revenue Bonds, Tender Option Bond Trust 2016-XG0054, 11.986%, 11/01/41 (IF) (4)	11/21 at 100.00	Aa2	2,126,553
4,080	Harris County, Texas, General Obligation Toll Road Revenue Bonds, Tender Option Bond Trust 2015-XF0074, 12.883%, 8/15/32 – AGM Insured (IF)	No Opt. Call	AAA	7,766,321
6,000	Harris County-Houston Sports Authority, Texas, Revenue Bonds, Capital Appreciation Refunding Senior Lien Series 2014A, 0.000%, 11/15/48	11/31 at 44.13	A2	1,471,680

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Texas (continued)
$ 6,000	Harris County-Houston Sports Authority, Texas, Revenue Bonds, Refunding Senior Lien Series 2014A, 5.000%, 11/15/53	11/24 at 100.00	A-	$6,719,400
	Harris County-Houston Sports Authority, Texas, Revenue Bonds, Third Lien Series 2004A-3:
1,940	0.000%, 11/15/34 (Pre-refunded 11/15/24) – NPFG Insured	11/24 at 55.69	A3 (6)	941,133
14,055	0.000%, 11/15/34 – NPFG Insured	11/24 at 55.69	A3	5,961,991
5,000	Houston Higher Education Finance Corporation, Texas, Education Revenue Bonds, KIPP, Inc., Refunding Series 2015, 4.000%, 8/15/44	8/25 at 100.00	AAA	5,207,600
	Houston, Texas, Hotel Occupancy Tax and Special Revenue Bonds, Convention and Entertainment Facilities Department, Refunding Series 2011B:
495	5.125%, 9/01/32 – AGM Insured	9/17 at 100.00	A2	496,485
290	5.125%, 9/01/33 – AGM Insured	9/17 at 100.00	A2	290,870
	Houston, Texas, Hotel Occupancy Tax and Special Revenue Bonds, Convention and Entertainment Project, Series 2001B:
4,130	0.000%, 9/01/26 – AMBAC Insured	No Opt. Call	A2	3,197,652
4,865	0.000%, 9/01/27 – AGM Insured	No Opt. Call	A2	3,613,868
4,715	Houston, Texas, Hotel Occupancy Tax and Special Revenue Bonds, Refunding Series 2015, 5.000%, 9/01/40	9/24 at 100.00	A-	5,272,737
17,000	Houston, Texas, Water and Sewerage System Revenue Bonds, Refunding Junior Lien Series 2002A, 5.750%, 12/01/32 – AGM Insured (ETM)	No Opt. Call	A2 (6)	24,120,960
6,700	Hutto Independent School District, Williamson County, Texas, General Obligation Bonds, Refunding Series 2012A, 5.000%, 8/01/46	8/21 at 100.00	A	7,438,340
3,500	Irving, Texas, Hotel Occupancy Tax Revenue Bonds, Series 2014B, 5.000%, 8/15/43	8/19 at 100.00	BBB+	3,614,590
940	Kerrville Health Facilities Development Corporation, Texas, Revenue Bonds, Sid Peterson Memorial Hospital Project, Series 2015, 5.000%, 8/15/30	8/25 at 100.00	BBB+	1,047,724
1,000	Lower Colorado River Authority, Texas, Transmission Contract Revenue Bonds, LCRA Transmission Services Corporation Project, Refunding Series 2015, 5.000%, 5/15/45	5/25 at 100.00	A	1,130,910
	McCamey County Hospital District, Texas, General Obligation Bonds, Series 2013:
3,095	5.750%, 12/01/33	12/25 at 100.00	Ba2	3,399,517
3,125	6.125%, 12/01/38	12/25 at 100.00	Ba2	3,461,812
	New Hope Cultural Education Facilities Finance Corporation, Texas, Retirement Facility Revenue Bonds, Legacy at Willow Bend Project, Series 2016:
2,335	5.000%, 11/01/46	11/23 at 103.00	BBB-	2,415,231
6,015	5.000%, 11/01/51	11/23 at 103.00	BBB-	6,235,390
745	New Hope Cultural Education Facilities Finance Corporation, Texas, Retirement Facility Revenue Bonds, Wesleyan Homes, Inc. Project, Series 2014, 5.500%, 1/01/43	1/25 at 100.00	N/R	771,544
210	New Hope Cultural Education Facilities Finance Corporation, Texas, Student Housing Revenue Bonds, CHF-Collegiate Housing Corpus Christi II, L.L.C.-Texas A&M University-Corpus Christi Project, Series 2016A, 5.000%, 4/01/48	4/26 at 100.00	BBB-	225,401
4,530	New Hope Cultural Education Facilities Finance Corporation, Texas, Student Housing Revenue Bonds, CHF-Collegiate Housing Foundation - College Station I LLC - Texas A&M University Project, Series 2014A, 4.100%, 4/01/34 – AGM Insured	4/24 at 100.00	A2	4,698,652
820	New Hope Cultural Education Facilities Finance Corporation, Texas, Student Housing Revenue Bonds, CHF-Collegiate Housing Foundation - San Antonio 1, L.L.C. - Texas A&M University - San Antonio Project, Series 2016A, 5.000%, 4/01/48	4/26 at 100.00	BBB-	877,654

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Texas (continued)
	New Hope Cultural Education Facilities Finance Corporation, Texas, Student Housing Revenue Bonds, CHF-Collegiate Housing Foundation - Stephenville II, L.L.C. - Tarleton State University Project, Series 2014A:
$ 1,000	5.000%, 4/01/34	4/24 at 100.00	BBB-	$1,069,430
2,200	5.000%, 4/01/39	4/24 at 100.00	BBB-	2,340,756
1,600	5.000%, 4/01/46	4/24 at 100.00	BBB-	1,692,736
5,540	New Hope Cultural Education Facilities Finance Corporation, Texas, Student Housing Revenue Bonds, CHF-Collegiate Housing Galveston-Texas A&M University at Galveston Project, Series 2014A, 5.000%, 4/01/39	4/24 at 100.00	Baa3	5,844,478
3,220	North Fort Bend Water Authority, Texas, Water System Revenue Bonds, Series 2011, 5.000%, 12/15/36 – AGM Insured	12/21 at 100.00	A2	3,532,469
	North Texas Tollway Authority, Special Projects System Revenue Bonds, Convertible Capital Appreciation Series 2011C:
2,590	0.000%, 9/01/43 (7)	9/31 at 100.00	AA	2,793,885
3,910	0.000%, 9/01/45 (7)	9/31 at 100.00	AA	4,582,676
3,000	North Texas Tollway Authority, Special Projects System Revenue Bonds, Series 2011A, 5.500%, 9/01/41 (UB) (4)	9/21 at 100.00	AA	3,487,770
6,155	North Texas Tollway Authority, System Revenue Bonds, Refunding First Tier, Series 2015B, 5.000%, 1/01/40	1/23 at 100.00	A	6,885,168
2,000	North Texas Tollway Authority, System Revenue Bonds, Refunding Second Tier, Series 2015A, 5.000%, 1/01/38	1/25 at 100.00	A-	2,277,700
610	Reagan Hospital District of Reagan County, Texas, Limited Tax Revenue Bonds, Series 2014A, 5.125%, 2/01/39	2/24 at 100.00	Ba2	631,454
1,715	Red River Education Finance Corporation, Texas, Higher Education Revenue Bonds, Saint Edward's University Project, Series 2016, 4.000%, 6/01/41	6/26 at 100.00	Baa2	1,738,530
4,375	Tarrant County Cultural & Educational Facilities Financing Corporation, Texas, Revenue Bonds, Tender Option Bond Trust 2016-XF0389, 8.391%, 11/15/47 (IF)	11/17 at 100.00	AA	4,456,813
2,410	Tarrant County Cultural Education Facilities Finance Corporation, Texas, Hospital Revenue Bonds, Baylor Health Care System, Series 2011A, 5.000%, 11/15/30	11/21 at 100.00	AA-	2,662,423
1,870	Tarrant County Cultural Education Facilities Finance Corporation, Texas, Hospital Revenue Bonds, Hendrick Medical Center, Refunding Series 2013, 5.500%, 9/01/43	9/23 at 100.00	A	2,097,205
	Tarrant County Cultural Education Facilities Finance Corporation, Texas, Hospital Revenue Bonds, Scott & White Healthcare Project, Series 2010:
215	5.500%, 8/15/45 (Pre-refunded 8/15/20)	8/20 at 100.00	N/R (6)	243,627
2,675	5.500%, 8/15/45 (Pre-refunded 8/15/20)	8/20 at 100.00	AA- (6)	3,031,176
17,640	Tarrant County Cultural Education Facilities Finance Corporation, Texas, Hospital Revenue Bonds, Scott & White Healthcare Project, Series 2016A,, 5.000%, 11/15/45 (UB)	5/26 at 100.00	AA-	20,055,093
7,430	Texas City Industrial Development Corporation, Texas, Industrial Development Revenue Bonds, NRG Energy, Inc. Project, Fixed Rate Series 2012, 4.125%, 12/01/45	2/25 at 100.00	Baa3	7,271,518
	Texas Municipal Gas Acquisition and Supply Corporation III, Gas Supply Revenue Bonds, Series 2012:
3,635	5.000%, 12/15/22	No Opt. Call	BBB	4,209,839
2,500	5.000%, 12/15/26	12/22 at 100.00	BBB	2,823,025
2,500	5.000%, 12/15/29	12/22 at 100.00	BBB	2,787,000
4,355	5.000%, 12/15/30	12/22 at 100.00	BBB	4,834,224
2,975	5.000%, 12/15/32	12/22 at 100.00	BBB	3,271,191

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Texas (continued)
$ 3,150	Texas Transportation Commission, Central Texas Turnpike System Revenue Bonds, First Tier Refunding Series 2012A, 5.000%, 8/15/41	8/22 at 100.00	A-	$3,521,416
	Texas Transportation Commission, Central Texas Turnpike System Revenue Bonds, First Tier Refunding Series 2015B:
11,280	0.000%, 8/15/36	8/24 at 59.60	A-	5,103,185
10,000	0.000%, 8/15/37	8/24 at 56.94	A-	4,317,200
	Texas Transportation Commission, Central Texas Turnpike System Revenue Bonds, Second Tier Refunding Series 2015C:
5,000	5.000%, 8/15/37	8/24 at 100.00	BBB	5,601,600
31,810	5.000%, 8/15/42	8/24 at 100.00	BBB	35,445,883
4,400	Texas Turnpike Authority, Central Texas Turnpike System Revenue Bonds, First Tier Series 2002A, 0.000%, 8/15/25 – AMBAC Insured	No Opt. Call	A-	3,592,864
1,840	Ysleta Independent School District Public Facility Corporation, Texas, Lease Revenue Refunding Bonds, Series 2001, 5.375%, 11/15/24 – AMBAC Insured	11/17 at 100.00	AA-	1,863,423
395,010	Total Texas			407,299,861
	Utah – 0.8% (0.5% of Total Investments)
15,000	Utah Transit Authority, Sales Tax Revenue Bonds, Series 2008A, 5.000%, 6/15/32 (Pre-refunded 6/15/18) – AGM Insured (UB) (4)	6/18 at 100.00	Aa2 (6)	15,536,700
4,865	Utah Transit Authority, Sales Tax Revenue Bonds, Tender Option Bond 2015-XF0258, 12.369%, 6/15/36 (Pre-refunded 6/15/18) – AGM Insured (IF)	6/18 at 100.00	Aa2 (6)	5,386,820
3,615	Utah Transit Authority, Sales Tax Revenue Bonds, Tender Option Bond Trust 2016-XG0023, 11.257%, 6/15/32 (Pre-refunded 6/15/18) – AGM Insured (IF)	6/18 at 100.00	Aa2 (6)	3,979,500
23,480	Total Utah			24,903,020
	Virginia – 1.4% (0.9% of Total Investments)
	Embrey Mill Community Development Authority, Virginia, Special Assessment Revenue Bonds, Series 2015:
1,200	5.300%, 3/01/35	3/25 at 100.00	N/R	1,206,336
1,085	5.600%, 3/01/45	3/25 at 100.00	N/R	1,106,407
14,945	Metropolitan Washington Airports Authority, Virginia, Dulles Toll Road Revenue Bonds, Dulles Metrorail & Capital Improvement Project, Refunding Second Senior Lien Series 2014A, 5.000%, 10/01/53	4/22 at 100.00	BBB+	15,997,726
10,000	Metropolitan Washington Airports Authority, Virginia, Dulles Toll Road Revenue Bonds, Dulles Metrorail Capital Appreciation, Second Senior Lien Series 2010B, 0.000%, 10/01/44 (7)	10/28 at 100.00	BBB+	11,724,400
11,000	Metropolitan Washington Airports Authority, Virginia, Dulles Toll Road Second Senior Lien Revenue Bonds, Series 2009C, 6.500%, 10/01/41 – AGC Insured	10/26 at 100.00	A3	14,295,820
	Roanoke Industrial Development Authority, Virginia, Hospital Revenue Bonds, Carilion Health System Obligated Group, Series 2005B:
15	5.000%, 7/01/38 (Pre-refunded 7/01/20)	7/20 at 100.00	A1 (6)	16,709
985	5.000%, 7/01/38	7/20 at 100.00	A1	1,052,689

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Virginia (continued)
$ 1,000	Virginia College Building Authority, Educational Facilities Revenue Bonds, Marymount University Project, Green Series 2015B, 5.250%, 7/01/35	7/25 at 100.00	BB+	$ 1,077,600
40,230	Total Virginia			46,477,687
	Washington – 2.2% (1.4% of Total Investments)
9,665	Central Puget Sound Regional Transit Authority, Washington, Sales Tax and Motor Vehicle Excise Tax Bonds, Green Series 2016S-1, 5.000%, 11/01/46 (UB)	No Opt. Call	Aa1	12,875,133
5,000	Energy Northwest, Washington, Electric Revenue Bonds, Columbia Generating Station, Refunding Series 2015A, 5.000%, 7/01/38 (UB) (4)	7/25 at 100.00	AA-	5,820,450
3,750	FYI Properties, Washington, Lease Revenue Bonds, Washington State Department of Information Services Project, Series 2009, 5.500%, 6/01/39 (UB) (4)	6/19 at 100.00	AA	4,015,350
7,500	King County, Washington, Sewer Revenue Bonds, Tender Option Bond Trust 2016-XL0009, 8.958%, 1/01/39 (Pre-refunded 1/01/19) – AGC Insured (IF) (4)	1/19 at 100.00	AAA	8,419,650
5,750	Washington Health Care Facilities Authority, Revenue Bonds, Fred Hutchinson Cancer Research Center, Series 2011A, 5.625%, 1/01/35	1/21 at 100.00	A3	6,271,697
1,250	Washington Health Care Facilities Authority, Revenue Bonds, Providence Health & Services, Tender Option Bond Trust 2015-XF0148, 15.602%, 10/01/44 (IF)	10/24 at 100.00	AA-	1,856,100
6,540	Washington Health Care Facilities Authority, Revenue Bonds, Seattle Children's Hospital, Series 2012A, 5.000%, 10/01/42	10/22 at 100.00	Aa2	7,283,990
	Washington State Housing Finance Commission, Non-profit Housing Revenue Bonds, Presbyterian Retirement Communities Northwest Project, Refunding Series 2016A:
5,450	5.000%, 1/01/46	1/25 at 102.00	BB+	5,665,602
3,650	5.000%, 1/01/51	1/25 at 102.00	BB+	3,751,981
21,510	Washington State, Motor Vehicle Fuel Tax General Obligation Bonds, Series 2002-03C, 0.000%, 6/01/28 – NPFG Insured (UB) (4)	No Opt. Call	AA+	16,440,093
70,065	Total Washington			72,400,046
	West Virginia – 1.8% (1.2% of Total Investments)
3,145	Pleasants County, West Virginia, Pollution Control Revenue Bonds, Allegheny Energy Supply Company, LLC Pleasants Station Project, Series 2007F, 5.250%, 10/15/37	10/17 at 100.00	B1	3,096,253
10,000	West Virginia Economic Development Authority, State Lottery Revenue Bonds, Series 2010A, 5.000%, 6/15/40	6/20 at 100.00	A1	10,938,700
40,855	West Virginia Hospital Finance Authority, Hospital Revenue Bonds, West Virginia United Health System Obligated Group, Refunding & Improvement Series 2013A, 5.500%, 6/01/44	6/23 at 100.00	A	46,258,482
54,000	Total West Virginia			60,293,435
	Wisconsin – 3.6% (2.3% of Total Investments)
	Public Finance Authority of Wisconsin, Charter School Revenue Bonds, Cornerstone Charter Academy, North Carolina, Series 2016A:
1,750	5.000%, 2/01/36	2/26 at 100.00	N/R	1,678,617
305	5.125%, 2/01/46	2/26 at 100.00	N/R	289,283
1,480	Public Finance Authority of Wisconsin, Charter School Revenue Bonds, Envision Science Academy Project, Series 2016A, 5.125%, 5/01/36	5/26 at 100.00	N/R	1,441,609
6,000	Public Finance Authority of Wisconsin, Charter School Revenue Bonds, Phoenix Academy Charter School, North Carolina, Series 2017A, 5.625%, 6/15/37	6/24 at 100.00	N/R	5,932,380
27,450	Public Finance Authority of Wisconsin, Limited Obligation PILOT Revenue Bonds, American Dream @ Meadowlands Project, Series 2017, 7.000%, 12/01/50	12/27 at 100.00	N/R	30,106,062

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Wisconsin (continued)
$ 2,500	Public Finance Authority, Wisconsin, Exempt Facilities Revenue Bonds, Celanese Project, Refunding Series 2016C, 4.050%, 11/01/30	5/26 at 100.00	BBB-	$2,598,925
8,460	Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Aurora Health Care, Inc., Series 2012A, 5.000%, 7/15/25	7/21 at 100.00	A2	9,473,593
2,500	Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Aurora Health Care, Inc., Series 2013A, 5.125%, 4/15/31	4/23 at 100.00	A2	2,786,275
6,620	Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Froedtert Health Inc. Obligated Group, Series 2012A, 5.000%, 4/01/42	10/22 at 100.00	AA-	7,212,689
16,190	Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Gundersen Lutheran, Series 2011A, 5.250%, 10/15/39	10/21 at 100.00	A+	17,786,496
	Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Marshfield Clinic, Series 2012B:
3,490	4.500%, 2/15/40	2/22 at 100.00	A-	3,644,188
1,485	5.000%, 2/15/40	2/22 at 100.00	A-	1,589,291
	Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Mercy Alliance, Inc., Series 2012:
11,000	5.000%, 6/01/32	6/22 at 100.00	A3	11,977,350
1,500	5.000%, 6/01/39	6/22 at 100.00	A3	1,610,220
1,250	Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Meriter Hospital, Inc., Series 2011A, 5.750%, 5/01/35 (Pre-refunded 5/01/21)	5/21 at 100.00	N/R (6)	1,461,188
5,000	Wisconsin Health and Educational Facilities Authority, Revenue Bonds, ProHealth Care, Inc. Obligated Group, Refunding Series 2015, 3.375%, 8/15/29	8/24 at 100.00	A+	5,161,950
1,450	Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Rocket Education Obligated Group, Series 2017C, 5.250%, 6/01/40	6/26 at 100.00	N/R	1,475,520
1,000	Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Rogers Memorial Hospital, Inc., Series 2014A, 5.000%, 7/01/34	7/24 at 100.00	A-	1,096,560
	Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Saint John's Communities Inc., Series 2015B:
550	5.000%, 9/15/37	9/22 at 100.00	BBB+	581,482
1,000	5.000%, 9/15/45	9/22 at 100.00	BBB+	1,049,160
1,000	Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Three Pillars Senior Living Communities, Refunding Series 2013, 5.000%, 8/15/33	8/23 at 100.00	A	1,089,520
	Wisconsin Health and Educational Facilities Authority, Revenue Bonds, Woodland Hills Senior Housing Project, Series 2014:
2,565	5.000%, 12/01/44	12/22 at 102.00	N/R	2,658,802
1,775	5.250%, 12/01/49	12/22 at 102.00	N/R	1,864,141
	Wisconsin Health and Educational Facilities Authority, Wisconsin, Revenue Bonds, Dickson Hollow Project. Series 2014:
1,000	5.375%, 10/01/44	10/22 at 102.00	N/R	1,069,420
1,500	5.500%, 10/01/49	10/22 at 102.00	N/R	1,610,385
108,820	Total Wisconsin			117,245,106
	Wyoming – 0.3% (0.2% of Total Investments)
2,035	Campbell County, Wyoming Solid Waste Facilities Revenue Bonds, Basin Electric Power Cooperative - Dry Fork Station Facilities, Series 2009A, 5.750%, 7/15/39	7/19 at 100.00	A3	2,177,572

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	Wyoming (continued)
	Teton County Hospital District, Wyoming, Hospital Revenue Bonds, St. John's Medical Center Project, Series 2011B:
$ 1,000	5.500%, 12/01/27	12/21 at 100.00	BBB+	$1,117,540
1,000	6.000%, 12/01/36	12/21 at 100.00	BBB+	1,117,130
4,000	Wyoming Municipal Power Agency, Power Supply System Revenue Bonds, Series 2008A, 5.375%, 1/01/42 (Pre-refunded 1/01/18)	1/18 at 100.00	A- (6)	4,076,360
8,035	Total Wyoming			8,488,602
$ 5,545,608	Total Municipal Bonds (cost $4,684,139,013)			5,072,282,682

Principal Amount (000)	Description (1)	Coupon	Maturity	Ratings (3)	Value
	CORPORATE BONDS – 0.0% (0.0% of Total Investments)
	Transportation – 0.0% (0.0% of Total Investments)
$ 1,275	Las Vegas Monorail Company, Senior Interest Bonds (9), (10)	5.500%	7/15/19	N/R	$796,189
344	Las Vegas Monorail Company, Senior Interest Bonds (9), (10)	5.500%	7/15/55	N/R	174,194
$ 1,619	Total Corporate Bonds (cost $126,852)				970,383
	Total Long-Term Investments (cost $4,684,265,865)				5,073,253,065

Principal Amount (000)	Description (1)	Optional Call Provisions (2)	Ratings (3)	Value
	SHORT-TERM INVESTMENTS – 0.6% (0.4% of Total Investments)
	MUNICIPAL BONDS – 0.6% (0.4% of Total Investments)
	Florida – 0.6% (0.4% of Total Investments)
$ 19,880	Miami-Dade County School Board, Florida, Certificates of Participation, Tender Option Bond Floater 2013-005, Variable Rate Demand Obligations, 1.060%, 5/01/37 – FGIC Insured (11)	10/17 at 100.00	A-2	$ 19,880,000
$ 19,880	Total Short-Term Investments (cost $19,880,000)			19,880,000
	Total Investments (cost $4,704,145,865) – 154.9%			5,093,133,065
	Floating Rate Obligations – (6.1)%			(200,190,000)
	Variable Rate MuniFund Term Preferred Shares, net of deferred offering costs – (7.3)% (12)			(240,388,980)
	Variable Rate Demand Preferred Shares, net of deferred offering costs – (42.8)% (13)			(1,407,504,367)
	Other Assets Less Liabilities – 1.3% (14)			43,680,337
	Net Assets Applicable to Common Shares – 100%			$ 3,288,730,055

Interest Rate Swaps (OTC Uncleared)
Counterparty	Notional Amount	Fund Pay/Receive Floating Rate	Floating Rate Index	Fixed Rate (Annualized)	Fixed Rate Payment Frequency	Effective Date (15)	Optional Termination Date	Termination Date	Unrealized Appreciation (Depreciation)
JPMorgan Chase Bank, N.A.	$68,900,000	Receive	Weekly USD-SIFMA	1.208%	Quarterly	8/11/17	9/11/17	8/11/28	$4,080,556
JPMorgan Chase Bank, N.A.	43,000,000	Receive	Weekly USD-SIFMA	1.841	Quarterly	8/24/18	9/24/18	8/24/28	224,835
	$111,900,000								$4,305,391

Fair Value Measurements

Fair value is defined as the price that would be received upon selling an investment or transferring a liability in an orderly transaction to an independent buyer in the principal or most advantageous market for the investment. A three-tier hierarchy is used to maximize the use of observable market data and minimize the use of unobservable inputs and to establish classification of fair value measurements for disclosure purposes. Observable

inputs reflect the assumptions market participants would use in pricing the asset or liability. Observable inputs are based on market data obtained from sources independent of the reporting entity. Unobservable inputs reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability. Unobservable inputs are based on the best information available in the circumstances. The following is a summary of the three-tiered hierarchy of valuation input levels.

Level 1 – Inputs are unadjusted and prices are determined using quoted prices in active markets for identical securities.

Level 2 – Prices are determined using other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.).

Level 3 – Prices are determined using significant unobservable inputs (including management’s assumptions in determining the fair value of investments).

The inputs or methodologies used for valuing securities are not an indication of the risks associated with investing in those securities. The following is a summary of the Fund’s fair value measurements as of the end of the reporting period:

	Level 1	Level 2	Level 3	Total
Long-Term Investments:
Municipal Bonds	$ —	$5,072,282,682	$ —	$5,072,282,682
Corporate Bonds	—	—	970,383	970,383
Short-Term Investments:
Municipal Bonds	—	19,880,000	—	19,880,000
Investments in Derivatives:
Interest Rate Swaps*	—	4,305,391	—	4,305,391
Total	$ —	$5,096,468,073	$970,383	$5,097,438,456

*	Represents net unrealized appreciation (depreciation).

Income Tax Information

The following information is presented on an income tax basis. Differences between amounts for financial statement and federal income tax purposes are primarily due to timing differences in recognizing taxable market discount, timing differences in recognizing certain gains and losses on investment transactions and the treatment of investments in inverse floating rate securities reflected as financing transactions, if any. To the extent that differences arise that are permanent in nature, such amounts are reclassified within the capital accounts on the Statement of Assets and Liabilities presented in the annual report, based on their federal tax basis treatment; temporary differences do not require reclassification. Temporary and permanent differences do not impact the net asset value of the Fund.

As of July 31, 2017, the cost of investments (excluding investments in derivatives) was $4,507,771,487.

Gross unrealized appreciation and gross unrealized depreciation of investments (excluding investments in derivatives) as of July 31, 2017, were as follows:

Gross unrealized:
Appreciation	$414,013,467
Depreciation	(28,841,012)
Net unrealized appreciation (depreciation) of investments	$385,172,455

(1)	All percentages shown in the Portfolio of Investments are based on net assets applicable to common shares unless otherwise noted.
(2)	Optional Call Provisions: Dates (month and year) and prices of the earliest optional call or redemption. There may be other call provisions at varying prices at later dates. Certain mortgage-backed securities may be subject to periodic principal paydowns.
(3)	For financial reporting purposes, the ratings disclosed are the lowest of Standard & Poor’s Group (“Standard & Poor’s”), Moody’s Investors Service, Inc. (“Moody’s”) or Fitch, Inc. (“Fitch”) rating. This treatment of split-rated securities may differ from that used for other purposes, such as for Fund investment policies. Ratings below BBB by Standard & Poor’s, Baa by Moody’s or BBB by Fitch are considered to be below investment grade. Holdings designated N/R are not rated by any of these national rating agencies.
(4)	Investment, or portion of investment, has been pledged to collateralize the net payment obligations for investments in inverse floating rate transactions.
(5)	The coupon for this security increased 0.25% effective January 1, 2016 and increased an additional 0.25% effective May 11, 2016.
(6)	Backed by an escrow or trust containing sufficient U.S. Government or U.S. Government agency securities, which ensure the timely payment of principal and interest. Certain bonds backed by U.S. Government or agency securities are regarded as having an implied rating equal to the rating of such securities.
(7)	Step-up coupon. The rate shown is the coupon as of the end of the reporting period.
(8)	As of, or subsequent to, the end of the reporting period, this security is non-income producing. Non-income producing, in the case of a fixed-income security, generally denotes that the issuer has (1) defaulted on the payment of principal or interest, (2) is under the protection of the Federal Bankruptcy Court or (3) the Fund’s Adviser has concluded that the issue is not likely to meet its future interest payment obligations and has ceased accruing additional income on the Fund’s records.
(9)	During January 2010, Las Vegas Monorail Company (“Las Vegas Monorail”) filed for federal bankruptcy protection. During March 2012, Las Vegas Monorail emerged from federal bankruptcy with the acceptance of a reorganization plan assigned by the Federal Bankruptcy Court. Under the reorganization plan, the Fund surrendered its Las Vegas Monorail Project Revenue Bonds, First Tier, Series 2000 and in turn received two senior interest corporate bonds: the first with an annual coupon rate of 5.500% maturing on July 15, 2019 and the second with an annual coupon rate of 3.000% (5.500% after December 31, 2015) maturing on July 15, 2055. The Fund was not accruing income for either senior interest corporate bond. On January 18, 2017, the Fund's Adviser determined it was likely that this senior interest corporate bond would fulfill its obligation on the security maturing on July 15, 2019, and therefore began accruing income on the Fund's records.
(10)	Investment valued at fair value using methods determined in good faith by, or at the discretion of, the Board. For fair value measurement disclosure purposes, investment classified as Level 3.
(11)	Investment has a maturity of greater than one year, but has variable rate and/or demand features which qualify it as a short-term investment. The rate disclosed is that in effect at the end of the reporting period. This rate changes periodically based on market conditions or a specified market index.
(12)	Variable Rate MuniFund Term Preferred Shares, net of deferred offering costs as a percentage of Total Investments is 4.7%.
(13)	Variable Rate Demand Preferred Shares, net of deferred offering costs as a percentage of Total Investments is 27.6%.
(14)	Other assets less liabilities includes the unrealized appreciation (depreciation) of certain over-the-counter (“OTC”) derivatives as well as the OTC cleared and exchange-traded derivatives, when applicable.
(15)	Effective date represents the date on which both the Fund and counterparty commence interest payment accruals on each contract.
(ETM)	Escrowed to maturity.
(IF)	Inverse floating rate investment.
(UB)	Underlying bond of an inverse floating rate trust reflected as a financing transaction.
USD-SIFMA	United States Dollar-Securities Industry and Financial Market Association
(WI/DD)	Investment, or portion of investment, purchased on a when-issued or delayed delivery basis.

Item 2. Controls and Procedures.

The registrant’s principal executive and principal financial officers, or persons performing similar functions, have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”) (17 CFR 270.30a-3(c))) are effective, as of a date within 90 days of the filing date of this report that includes the disclosure required by this paragraph, based on their evaluation of the controls and procedures required by Rule 30a-3(b) under the 1940 Act (17 CFR 270.30a-3(b)) and Rule 13a-15(b) or 15d-15(b) under the Securities Exchange Act of 1934 (17 CFR 240.13a-15(b) or 240.15d-15(b)).

There were no changes in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 Act (17 CFR 270.30a-3(d)) that occurred during the registrant’s last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the registrant’s internal control over financial reporting.

Item 3. Exhibits.

File as exhibits as part of this Form a separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the 1940 Act (17 CFR 270.30a-2(a)), exactly as set forth below: See EX-99 CERT attached hereto.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.


(Registrant)		Nuveen AMT-Free Municipal Credit Income Fund

By (Signature and Title)		/s/ Gifford R. Zimmerman
		Gifford R. Zimmerman
		Vice President and Secretary

Date: September 29, 2017

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.


By (Signature and Title)		/s/ Cedric H. Antosiewicz
		Cedric H. Antosiewicz
		Chief Administrative Officer (principal executive officer)

Date: September 29, 2017

By (Signature and Title)		/s/ Stephen D. Foy
		Stephen D. Foy
		Vice President and Controller (principal financial officer)

Date: September 29, 2017