PAGE 1 000 B000000 12/31/2011 000 C000000 809559 000 D000000 N 000 E000000 NF 000 F000000 Y 000 G000000 N 000 H000000 N 000 I000000 6.1 000 J000000 A 001 A000000 TCW STRATEGIC INCOME FUND, INC. 001 B000000 811-49800 001 C000000 8662278179 002 A000000 865 SOUTH FIGUEROA STREET 002 B000000 LOS ANGELES 002 C000000 CA 002 D010000 90017 003 000000 N 004 000000 N 005 000000 N 006 000000 N 007 A000000 N 007 B000000 0 007 C010100 1 008 A000001 TCW INVESTMENT MANAGEMENT COMPANY 008 B000001 A 008 C000001 801-29075 008 D010001 LOS ANGELES 008 D020001 CA 008 D030001 90017 010 A000001 STATE STREET BANK & TRUST COMPANY 010 B000001 85-11329 010 C010001 BOSTON 010 C020001 MA 010 C030001 02116 012 A000001 COMPUTERSHARE SHAREOWNER SERVICES LLC 012 B000001 85-05006 012 C010001 PITTSBURGH 012 C020001 PA 012 C030001 15252 013 A000001 DELOITTE & TOUCHE LLP 013 B010001 LOS ANGELES 013 B020001 CA 013 B030001 90071 014 A000001 NEWEDGE USA, LLC 014 B000001 8-47023 014 A000002 SG AMERICAS SECURITIES, LLC 014 B000002 8-66125 014 A000003 TCW FUNDS DISTRIBUTORS 014 B000003 8-31114 014 A000004 FIMAT FUTURES USA INC. 014 B000004 8-36118 PAGE 2 014 A000005 FIMAT USA LLC 014 B000005 8-36118 015 A000001 STATE STREET BANK & TRUST COMPANY 015 B000001 C 015 C010001 BOSTON 015 C020001 MA 015 C030001 02116 015 E010001 X 015 A000002 The HongKong and Shanghai Banking Corp. Ltd 015 B000002 S 015 C010002 Tokyo 015 D010002 Japan 015 E040002 X 015 A000003 Mizuho Corporate Bank Ltd. 015 B000003 S 015 C010003 Tokyo 015 D010003 Japan 015 E040003 X 018 000000 Y 019 A000000 Y 019 B000000 24 019 C000000 TRUSTCOMPW 020 A000001 NOMURA SECURITIES INTERNATIONAL, INC. 020 B000001 13-2642206 020 C000001 21 020 A000002 BARCLAYS CAPITAL, INC. 020 B000002 06-1031656 020 C000002 13 020 A000003 CITIGROUP GLOBAL MARKETS, INC. 020 B000003 11-2418191 020 C000003 3 020 A000004 JMP SECURITIES 020 B000004 74-3023395 020 C000004 1 020 A000005 BUCKINGHAM RESEARCH GROUP 020 B000005 13-3134008 020 C000005 1 020 A000006 BANK OF AMERICA CORP. 020 B000006 56-2058405 020 C000006 1 020 A000007 FRIEDMAN, BILLINGS, RAMSEY & CO 020 B000007 52-1630477 020 C000007 1 020 A000008 CREDIT SUISSE GROUP 020 B000008 13-5659485 020 C000008 1 020 A000009 KEEFE BRUYETTE & WOOD INC 020 B000009 51-0379417 020 C000009 1 020 A000010 KEYBANC CAPITAL MARKETS 020 B000010 34-1391952 PAGE 3 020 C000010 1 021 000000 53 022 A000001 STATE STREET BANK & TRUST CO. 022 B000001 04-2899840 022 C000001 132720 022 D000001 552 022 A000002 BANK OF AMERICA CORP. 022 B000002 56-2058405 022 C000002 25957 022 D000002 14331 022 A000003 BARCLAYS CAPITAL, INC. 022 B000003 06-1031656 022 C000003 20797 022 D000003 7391 022 A000004 NOMURA SECURITIES INTERNATIONAL, INC. 022 B000004 13-2642206 022 C000004 16500 022 D000004 3175 022 A000005 CREDIT SUISSE GROUP 022 B000005 13-5659485 022 C000005 12175 022 D000005 5961 022 A000006 CITIGROUP GLOBAL MARKETS, INC. 022 B000006 11-2418191 022 C000006 12523 022 D000006 4610 022 A000007 MORGAN STANLEY & CO., INC. 022 B000007 13-2655998 022 C000007 12700 022 D000007 2795 022 A000008 JPMORGAN CHASE & CO. 022 B000008 13-3224016 022 C000008 8319 022 D000008 5604 022 A000009 DEUTSCHE BANK 022 B000009 13-2730828 022 C000009 8876 022 D000009 2840 022 A000010 WELLS FARGO SECURITIES, LLC 022 B000010 41-0449260 022 C000010 3368 022 D000010 7860 023 C000000 258031 023 D000000 64369 024 000000 Y 025 A000001 BANK OF AMERICA CORP. 025 B000001 56-2058405 025 C000001 D 025 D000001 26042 025 A000002 J.P. MORGAN CHASE & CO., INC. 025 B000002 13-3224016 PAGE 4 025 C000002 D 025 D000002 11050 025 A000003 BARCLAYS CAPITAL, INC. 025 B000003 06-1031656 025 C000003 D 025 D000003 10134 025 A000004 CREDIT SUISSE GROUP 025 B000004 13-5659485 025 C000004 D 025 D000004 9668 025 A000005 CITIGROUP GLOBAL MARKETS, INC. 025 B000005 11-2418191 025 C000005 D 025 D000005 8494 025 A000006 WELLS FARGO SECURITIES, LLC 025 B000006 41-0449260 025 C000006 D 025 D000006 5860 025 A000007 MORGAN STANLEY & CO., INC. 025 B000007 13-2655998 025 C000007 D 025 D000007 5387 025 A000008 DEUTSCHE BANK 025 B000008 13-2730828 025 C000008 D 025 D000008 4299 025 A000009 NOMURA SECURITIES INTERNATIONAL, INC. 025 B000009 13-2642206 025 C000009 D 025 D000009 1717 025 A000010 STATE STREET BANK & TRUST CO. 025 B000010 04-2899840 025 C000010 D 025 D000010 198 025 A000011 JPMORGAN CHASE & CO. 025 B000011 13-3224016 025 C000011 E 025 D000011 771 025 A000012 STATE STREET BANK & TRUST CO. 025 B000012 04-2899840 025 C000012 E 025 D000012 587 025 A000013 CITIGROUP GLOBAL MARKETS, INC. 025 B000013 11-2418191 025 C000013 E 025 D000013 218 026 A000000 N 026 B000000 Y 026 C000000 Y 026 D000000 Y 026 E000000 N PAGE 5 026 F000000 N 026 G010000 N 026 G020000 N 026 H000000 N 027 000000 N 028 A010000 0 028 A020000 0 028 A030000 0 028 A040000 0 028 B010000 0 028 B020000 0 028 B030000 0 028 B040000 0 028 C010000 0 028 C020000 0 028 C030000 0 028 C040000 0 028 D010000 0 028 D020000 0 028 D030000 0 028 D040000 0 028 E010000 0 028 E020000 0 028 E030000 0 028 E040000 0 028 F010000 0 028 F020000 0 028 F030000 0 028 F040000 0 028 G010000 0 028 G020000 0 028 G030000 0 028 G040000 0 028 H000000 0 030 A000000 0 030 B000000 0.00 030 C000000 0.00 031 A000000 0 031 B000000 0 032 000000 0 033 000000 0 035 000000 0 036 B000000 0 038 000000 0 042 A000000 0 042 B000000 0 042 C000000 0 042 D000000 0 042 E000000 0 042 F000000 0 042 G000000 0 PAGE 6 042 H000000 0 043 000000 0 044 000000 0 045 000000 Y 046 000000 N 047 000000 Y 048 000000 0.000 048 A010000 100000 048 A020000 0.750 048 B010000 0 048 B020000 0.000 048 C010000 0 048 C020000 0.000 048 D010000 0 048 D020000 0.000 048 E010000 0 048 E020000 0.000 048 F010000 0 048 F020000 0.000 048 G010000 0 048 G020000 0.000 048 H010000 0 048 H020000 0.000 048 I010000 0 048 I020000 0.000 048 J010000 0 048 J020000 0.000 048 K010000 100000 048 K020000 0.500 049 000000 N 050 000000 N 051 000000 N 052 000000 N 053 A000000 N 054 A000000 Y 054 B000000 N 054 C000000 N 054 D000000 N 054 E000000 N 054 F000000 N 054 G000000 N 054 H000000 Y 054 I000000 N 054 J000000 Y 054 K000000 N 054 L000000 N 054 M000000 Y 054 N000000 N 054 O000000 N 055 A000000 N 055 B000000 Y PAGE 7 056 000000 Y 057 000000 N 058 A000000 N 059 000000 Y 060 A000000 Y 060 B000000 Y 061 000000 0 062 A000000 Y 062 B000000 0.3 062 C000000 0.0 062 D000000 0.1 062 E000000 0.0 062 F000000 0.0 062 G000000 0.0 062 H000000 0.0 062 I000000 0.0 062 J000000 0.0 062 K000000 0.0 062 L000000 0.0 062 M000000 0.0 062 N000000 10.5 062 O000000 0.6 062 P000000 25.0 062 Q000000 78.7 062 R000000 12.5 063 A000000 0 063 B000000 12.6 064 A000000 N 064 B000000 N 066 A000000 N 067 000000 N 068 A000000 N 068 B000000 N 069 000000 N 070 A010000 Y 070 A020000 Y 070 B010000 Y 070 B020000 N 070 C010000 Y 070 C020000 N 070 D010000 Y 070 D020000 N 070 E010000 N 070 E020000 N 070 F010000 Y 070 F020000 Y 070 G010000 N 070 G020000 N 070 H010000 Y 070 H020000 N 070 I010000 N PAGE 8 070 I020000 N 070 J010000 Y 070 J020000 Y 070 K010000 Y 070 K020000 N 070 L010000 Y 070 L020000 Y 070 M010000 Y 070 M020000 N 070 N010000 Y 070 N020000 N 070 O010000 Y 070 O020000 Y 070 P010000 N 070 P020000 N 070 Q010000 N 070 Q020000 N 070 R010000 Y 070 R020000 N 071 A000000 130975 071 B000000 125943 071 C000000 317763 071 D000000 40 072 A000000 12 072 B000000 28027 072 C000000 1121 072 D000000 0 072 E000000 0 072 F000000 1855 072 G000000 17 072 H000000 0 072 I000000 63 072 J000000 62 072 K000000 0 072 L000000 30 072 M000000 109 072 N000000 0 072 O000000 0 072 P000000 739 072 Q000000 94 072 R000000 131 072 S000000 72 072 T000000 0 072 U000000 0 072 V000000 0 072 W000000 211 072 X000000 3383 072 Y000000 0 072 Z000000 25765 072AA000000 18318 072BB000000 12435 PAGE 9 072CC010000 0 072CC020000 16516 072DD010000 42487 072DD020000 0 072EE000000 0 073 A010000 0.8924 073 A020000 0.0000 073 B000000 0.0000 073 C000000 0.0000 074 A000000 0 074 B000000 198 074 C000000 680 074 D000000 270011 074 E000000 1494 074 F000000 28064 074 G000000 0 074 H000000 0 074 I000000 0 074 J000000 202 074 K000000 0 074 L000000 2202 074 M000000 0 074 N000000 302851 074 O000000 300 074 P000000 190 074 Q000000 0 074 R010000 0 074 R020000 0 074 R030000 0 074 R040000 67134 074 S000000 0 074 T000000 235227 074 U010000 47610 074 U020000 0 074 V010000 4.94 074 V020000 0.00 074 W000000 0.0000 074 X000000 1016 074 Y000000 11119 075 A000000 0 075 B000000 266689 076 000000 4.85 077 A000000 Y 077 B000000 Y 077 C000000 N 077 D000000 N 077 E000000 N 077 F000000 N 077 G000000 N 077 H000000 N 077 I000000 N PAGE 10 077 J000000 N 077 K000000 N 077 L000000 N 077 M000000 N 077 N000000 N 077 O000000 N 077 P000000 N 078 000000 N 080 A000000 National Union Fire Insurance Company 080 C000000 80000 081 A000000 Y 081 B000000 23 082 A000000 Y 082 B000000 10 083 A000000 N 083 B000000 0 084 A000000 N 084 B000000 0 085 A000000 Y 085 B000000 N 086 A010000 0 086 A020000 0 086 B010000 0 086 B020000 0 086 C010000 0 086 C020000 0 086 D010000 0 086 D020000 0 086 E010000 0 086 E020000 0 086 F010000 0 086 F020000 0 087 A010000 COMMON STOCK 087 A020000 872340104 087 A030000 TSI 088 A000000 N 088 B000000 N 088 C000000 N 088 D000000 N SIGNATURE DAVID S. DEVITO TITLE TREASURER