SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13G


                    Under the Securities Exchange Act of 1934
                               (Amendment No. 3)*







                               Arch Wireless, Inc.
--------------------------------------------------------------------------------
                                (Name of Issuer)



                          COMMON STOCK ($.01 par value)
--------------------------------------------------------------------------------
                         (Title of Class of Securities)



                                    039381504
--------------------------------------------------------------------------------
                                 (CUSIP Number)


Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

        [ ]               Rule 13d-1(b)

        [X]               Rule 13d-1(c)

        [ ]               Rule 13d-1(d)






* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).



                                     Page 1



CUSIP No.         039381504
                  ----------------------
--------------------------------------------------------------------------------
     1)      Names of Reporting Person

             S.S. or I.R.S. Identification No. of Above Person

                  Tudor Investment Corporation
             -------------------------------------------------------------------

                  22-2514825
             -------------------------------------------------------------------

--------------------------------------------------------------------------------
     2)      Check the Appropriate Box if a Member of a Group (See Instructions)
             (a)
                 ---------------------------------------------------------------
             (b)         X
                 ---------------------------------------------------------------
--------------------------------------------------------------------------------
     3)      SEC Use Only
                          ------------------------------------------------------
--------------------------------------------------------------------------------
     4)      Citizenship or Place of Organization           Delaware
                                                  ------------------------------
--------------------------------------------------------------------------------
                           (5)  Sole Voting Power                0
                                                  ------------------------------
Number of Shares        --------------------------------------------------------
Beneficially               (6)  Shared Voting Power              0
Owned by Each                                       ----------------------------
Reporting Person        --------------------------------------------------------
With                       (7)  Sole Dispositive Power           0
                                                      --------------------------
                        --------------------------------------------------------
                           (8)  Shared Dispositive Power         0
                                                         -----------------------
--------------------------------------------------------------------------------
     9)      Aggregate Amount Beneficially Owned by Each Reporting Person   0
                                                                           -----
--------------------------------------------------------------------------------
    10)      Check if the Aggregate Amount in Row (9) Excludes Certain Shares
             (See Instructions)
                                 -----------------------------------------------
--------------------------------------------------------------------------------
    11)      Percent of Class Represented by Amount in Row 9        0%
                                                               -----------------
--------------------------------------------------------------------------------
    12)      Type of Reporting Person (See Instructions)             CO
                                                          ----------------------
--------------------------------------------------------------------------------






CUSIP No.         039381504
                  ----------------------
--------------------------------------------------------------------------------
     1)      Names of Reporting Person

             S.S. or I.R.S. Identification No. of Above Person

                 Paul Tudor Jones, II
             -------------------------------------------------------------------

             -------------------------------------------------------------------
--------------------------------------------------------------------------------
     2)      Check the Appropriate Box if a Member of a Group (See Instructions)
             (a)
                  --------------------------------------------------------------
             (b)         X
                  --------------------------------------------------------------
--------------------------------------------------------------------------------
     3)      SEC Use Only
                            ----------------------------------------------------
--------------------------------------------------------------------------------
     4)      Citizenship or Place of Organization           USA
                                                    ----------------------------
--------------------------------------------------------------------------------
                           (5)  Sole Voting Power                0
                                                  ------------------------------
Number of Shares        --------------------------------------------------------
Beneficially               (6)  Shared Voting Power              0
Owned by Each                                       ----------------------------
Reporting Person        --------------------------------------------------------
With                       (7)  Sole Dispositive Power           0
                                                      --------------------------
                        --------------------------------------------------------
                           (8)  Shared Dispositive Power         0
                                                         -----------------------
--------------------------------------------------------------------------------
     9)      Aggregate Amount Beneficially Owned by Each Reporting Person   0
                                                                           -----
--------------------------------------------------------------------------------
    10)      Check if the Aggregate Amount in Row (9) Excludes Certain Shares
               (See Instructions)
                                 -----------------------------------------------
--------------------------------------------------------------------------------
    11)      Percent of Class Represented by Amount in Row 9        0%
                                                               -----------------
--------------------------------------------------------------------------------
    12)      Type of Reporting Person (See Instructions)            IN
                                                          ----------------------
--------------------------------------------------------------------------------


                                     Page 3


CUSIP No.         039381504
                  ----------------------
--------------------------------------------------------------------------------
     1)      Names of Reporting Person

               S.S. or I.R.S. Identification No. of Above Person

                    Tudor Proprietary Trading, L.L.C.
               -----------------------------------------------------------------
                    13-3720063
               -----------------------------------------------------------------
--------------------------------------------------------------------------------
     2)      Check the Appropriate Box if a Member of a Group (See Instructions)
             (a)
                  --------------------------------------------------------------
             (b)         X
                  --------------------------------------------------------------
--------------------------------------------------------------------------------
     3)      SEC Use Only
                            ----------------------------------------------------
--------------------------------------------------------------------------------
     4)      Citizenship or Place of Organization           Delaware
                                                    ----------------------------
--------------------------------------------------------------------------------
                           (5)  Sole Voting Power                0
                                                  ------------------------------
Number of Shares        --------------------------------------------------------
Beneficially               (6)  Shared Voting Power              0
Owned by Each                                       ----------------------------
Reporting Person        --------------------------------------------------------
With                       (7)  Sole Dispositive Power           0
                                                      --------------------------
                        --------------------------------------------------------
                           (8)  Shared Dispositive Power         0
                                                         -----------------------
--------------------------------------------------------------------------------
     9)      Aggregate Amount Beneficially Owned by Each Reporting Person   0
                                                                           -----
--------------------------------------------------------------------------------
    10)      Check if the Aggregate Amount in Row (9) Excludes Certain Shares
               (See Instructions)
                                 -----------------------------------------------
--------------------------------------------------------------------------------
    11)      Percent of Class Represented by Amount in Row 9        0%
                                                               -----------------
--------------------------------------------------------------------------------
    12)      Type of Reporting Person (See Instructions)            OO
                                                          ----------------------
--------------------------------------------------------------------------------



                                     Page 4



CUSIP No.      039381504
               -------------------------
--------------------------------------------------------------------------------
     1)      Names of Reporting Person

             S.S. or I.R.S. Identification No. of Above Person

                    The Tudor BVI Global Portfolio Ltd.
               -----------------------------------------------------------------
                    98-0223576
               -----------------------------------------------------------------
--------------------------------------------------------------------------------
     2)      Check the Appropriate Box if a Member of a Group (See Instructions)
             (a)
                  --------------------------------------------------------------
             (b)         X
                  --------------------------------------------------------------
--------------------------------------------------------------------------------
     3)      SEC Use Only
                            ----------------------------------------------------
--------------------------------------------------------------------------------
     4)      Citizenship or Place of Organization           Cayman Islands
                                                    ----------------------------
--------------------------------------------------------------------------------
                           (5)  Sole Voting Power                0
                                                  ------------------------------
Number of Shares        --------------------------------------------------------
Beneficially               (6)  Shared Voting Power              0
Owned by Each                                       ----------------------------
Reporting Person        --------------------------------------------------------
With                       (7)  Sole Dispositive Power           0
                                                      --------------------------
                        --------------------------------------------------------
                           (8)  Shared Dispositive Power         0
                                                         -----------------------
--------------------------------------------------------------------------------
     9)      Aggregate Amount Beneficially Owned by Each Reporting Person   0
                                                                           -----
--------------------------------------------------------------------------------
    10)      Check if the Aggregate Amount in Row (9) Excludes Certain Shares
               (See Instructions)
                                 -----------------------------------------------
--------------------------------------------------------------------------------
    11)      Percent of Class Represented by Amount in Row 9        0%
                                                               -----------------
--------------------------------------------------------------------------------
    12)      Type of Reporting Person (See Instructions)            CO
                                                          ----------------------
--------------------------------------------------------------------------------



                                     Page 5



CUSIP No.         039381504
                  ----------------------
--------------------------------------------------------------------------------
     1)      Names of Reporting Person

             S.S. or I.R.S. Identification No. of Above Person

                    The Raptor Global Portfolio Ltd.
             -------------------------------------------------------------------
                    98-0211544
             -------------------------------------------------------------------
--------------------------------------------------------------------------------
     2)      Check the Appropriate Box if a Member of a Group (See Instructions)
               (a)
                  --------------------------------------------------------------
               (b)         X
                  --------------------------------------------------------------
--------------------------------------------------------------------------------
     3)      SEC Use Only
                            ----------------------------------------------------
--------------------------------------------------------------------------------
     4)      Citizenship or Place of Organization           Cayman Islands
                                                    ----------------------------
--------------------------------------------------------------------------------
                           (5)  Sole Voting Power                0
                                                  ------------------------------
Number of Shares        --------------------------------------------------------
Beneficially               (6)  Shared Voting Power              0
Owned by Each                                       ----------------------------
Reporting Person        --------------------------------------------------------
With                       (7)  Sole Dispositive Power           0
                                                      --------------------------
                        --------------------------------------------------------
                           (8)  Shared Dispositive Power         0
                                                         -----------------------
--------------------------------------------------------------------------------
     9)      Aggregate Amount Beneficially Owned by Each Reporting Person   0
                                                                           -----
--------------------------------------------------------------------------------
    10)      Check if the Aggregate Amount in Row (9) Excludes Certain Shares
               (See Instructions)
                                 -----------------------------------------------
--------------------------------------------------------------------------------
    11)      Percent of Class Represented by Amount in Row 9        0%
                                                               -----------------
--------------------------------------------------------------------------------
    12)      Type of Reporting Person (See Instructions)            CO
                                                          ----------------------
--------------------------------------------------------------------------------


                                     Page 6



CUSIP No.         039381504
                  ----------------------
--------------------------------------------------------------------------------
     1)      Names of Reporting Person

             S.S. or I.R.S. Identification No. of Above Person

                    The Altar Rock Fund L.P.
             -------------------------------------------------------------------
                    06-1558414
             -------------------------------------------------------------------
--------------------------------------------------------------------------------
     2)      Check the Appropriate Box if a Member of a Group (See Instructions)
             (a)
                  --------------------------------------------------------------
             (b)         X
                  --------------------------------------------------------------
--------------------------------------------------------------------------------
     3)      SEC Use Only
                            ----------------------------------------------------
--------------------------------------------------------------------------------
     4)      Citizenship or Place of Organization           Delaware
                                                    ----------------------------
--------------------------------------------------------------------------------
                           (5)  Sole Voting Power                0
                                                  ------------------------------
Number of Shares        --------------------------------------------------------
Beneficially               (6)  Shared Voting Power              0
Owned by Each                                       ----------------------------
Reporting Person        --------------------------------------------------------
With                       (7)  Sole Dispositive Power           0
                                                      --------------------------
                        --------------------------------------------------------
                           (8)  Shared Dispositive Power         0
                                                         -----------------------
--------------------------------------------------------------------------------
     9)      Aggregate Amount Beneficially Owned by Each Reporting Person   0
                                                                           -----
--------------------------------------------------------------------------------
    10)      Check if the Aggregate Amount in Row (9) Excludes Certain Shares
               (See Instructions)
                                 -----------------------------------------------
--------------------------------------------------------------------------------
    11)      Percent of Class Represented by Amount in Row 9        0.0%
                                                               -----------------
--------------------------------------------------------------------------------
    12)      Type of Reporting Person (See Instructions)            PN
                                                          ----------------------
--------------------------------------------------------------------------------


                                     Page 7



Item 1(a).     Name of Issuer:

               Arch Wireless, Inc. (formerly Arch Communications Group, Inc.)

Item 1(b).     Address of Issuer's Principal Executive Offices:

               1800 West Park Drive
               Suite 250
               Westborough, MA 01581

Item 2(a).     Name of Person Filing:

               Tudor Investment Corporation ("TIC")
               Paul Tudor Jones, II
               Tudor Proprietary Trading, L.L.C. ("TPT")
               The Tudor BVI Global Portfolio Ltd. ("BVI Portfolio")
               The Altar Rock Fund L.P. ("Altar Rock")
               The Raptor Global Portfolio Ltd. ("Raptor Portfolio")

Item 2(b).     Address of Principal Business Office or, if none, Residence:

               The principal business office of each of TIC, TPT and Altar Rock
               is:

                           1275 King Street
                           Greenwich, CT 06831

               The principal business office of Mr. Jones is:

                           c/o Tudor Investment Corporation
                           1275 King Street
                           Greenwich, CT 06831

               The principal business office of each of Tudor BVI, Raptor
               Portfolio and BVI Portfolio is:

                           c/o CITCO
                           Kaya Flamboyan 9
                           Curacao, Netherlands Antilles

Item 2(c).     Citizenship:

               TIC is a Delaware corporation
               Mr. Jones is a citizen of the United States
               Altar Rock is a Delaware limited partnership
               TPT is a Delaware limited liability company
               Raptor Portfolio and BVI Portfolio are companies organized under
               the laws of the Cayman Islands

Item 2(d).     Title of Class of Securities:

               Common Stock

Item 2(e).     CUSIP Number:

               039381504



                                     Page 8




Item 3.        If this statement is filed pursuant to Rules 13d-1(b), or
               13d-2(b), check whether the person filing is a:

               (a) [ ] Broker or Dealer registered under section 15 of the Act
               (b) [ ] Bank as defined in section 3(a)(6) of the Act
               (c) [ ] Insurance Company as defined in section 3(a)(19) of the
                       Act
               (d) [ ] Investment Company registered under section 8 of the
                       Investment Company Act
               (e) [ ] Investment Adviser registered under section 203 of the
                       Investment Advisers Act of 1940
               (f) [ ] Employment Benefit Plan, Pension Fund which is subject
                       to the provisions of the Employee Retirement Income
                       Security Act of 1974 or Endowment fund; see section
                       240.13d-1(b)(1)(ii)(F)
               (g) [ ] Parent Holding Company, in accordance with section
                       240.13d-1(b)(1)(ii)(G) (Note: See Item 7)
               (h) [ ] Group, in accordance with section 240.13d-1(b)(1)(ii)(H)

Item 4.        Ownership (As of December 31, 2001).

               (a) Amount Beneficially Owned:  See Item 9 of cover pages
                                               -------------------------
               (b) Percent of Class:  See Item 11 of cover pages
                                      --------------------------
               (c) Number of shares as to which such person has:

                   (i)   sole power to vote or to direct the vote
                                                See Item 5 of cover pages
                                                --------------------------------
                   (ii)  shared power to vote or to direct the vote
                                                See Item 6 of cover pages
                                                --------------------------------
                   (iii) sole power to dispose or to direct the disposition of
                                                See Item 7 of cover pages
                                                --------------------------------
                   (iv)  shared power to dispose or to direct the disposition of
                                                See Item 8 of cover pages
                                                --------------------------------

Item 5.        Ownership of Five Percent or Less of a Class.

                  If this statement is being filed to report that as of the date
               hereof the reporting person has ceased to be the beneficial owner
               of more than five percent of the class of securities, check the
               following [X].

Item 6.        Ownership of More than Five Percent on Behalf of Another Person.

                  Not applicable

Item 7.        Identification and Classification of the Subsidiary Which
                 Acquired the Security Being Reported on By the Parent Holding
                 Company.

                  Not applicable

Item 8.        Identification and Classification of Members of the Group.

                  See cover pages

Item 9.        Notice of Dissolution of Group.

                  Not applicable


                                     Page 9



Item 10.       Certification.

               By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were not acquired and are not held for
the purpose of or with the effect of changing or influencing the control of the
issuer of the securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.

               After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this statement is true,
complete and correct.


                           Dated:       February 1, 2002

                           TUDOR INVESTMENT CORPORATION


                           By:  /s/ Stephen N. Waldman
                               -------------------------------------------------
                               Stephen N. Waldman
                               Vice President and Associate General Counsel



                            /s/ Paul Tudor Jones, II
                           -----------------------------------------------------
                           Paul Tudor Jones, II


                           THE TUDOR BVI GLOBAL PORTFOLIO LTD.

                           By: Tudor Investment Corporation,
                               Sub-Investment Manager


                               By: /s/  Stephen N. Waldman
                                  ----------------------------------------------
                                  Stephen N. Waldman
                                  Vice President and Associate
                                         General Counsel


                           TUDOR PROPRIETARY TRADING, L.L.C.


                           By:  /s/  Stephen N. Waldman
                               -------------------------------------------------
                               Stephen N. Waldman
                               Vice President and Associate General Counsel

                           THE ALTAR ROCK FUND L.P.

                           By: Tudor Investment Corporation,
                               General Partner


                               By:  /s/ Stephen N. Waldman
                                  ----------------------------------------------
                                  Stephen N. Waldman
                                  Vice President and Associate
                                          General Counsel




                                    Page 10


                           THE RAPTOR GLOBAL PORTFOLIO LTD.

                           By:    Tudor Investment Corporation,
                                  Investment Advisor


                                  By:  /s/ Stephen N. Waldman
                                     -------------------------------------------
                                     Stephen N. Waldman
                                     Vice President and Associate
                                            General Counsel
















                                    Page 11