TUDOR INVESTMENT CORP ET AL
SC 13G, 1999-02-02
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<PAGE>
 
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549


                                 SCHEDULE 13G


                   UNDER THE SECURITIES EXCHANGE ACT OF 1934
                              (AMENDMENT NO.   )*



                       Boston Communications Group, Inc.
- --------------------------------------------------------------------------------
                               (Name of Issuer)



                                 COMMON STOCK
- --------------------------------------------------------------------------------
                        (Title of Class of Securities)



                                   100582105
- --------------------------------------------------------------------------------
                                (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
<PAGE>
 
- -----------------------                                  ---------------------
  CUSIP NO. 100582105               13G                    PAGE 2 OF 12 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                                                                                
      Tudor Investment Corporation
      22-2514825
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4                                 
      Delaware

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5                                                       
     NUMBER OF            
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6       
                          829,400
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7       
    REPORTING             0
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8       
                          829,400
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9                           
      829,400
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10           
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11           
      5.1%                                                               

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12           
      CO

- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
- -----------------------                                  ---------------------
  CUSIP NO. 100582105               13G                    PAGE 3 OF 12 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                                                                                
      Paul Tudor Jones, II
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4                                 
      USA

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5                                                       
     NUMBER OF            
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6       
                          888,300
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7       
    REPORTING             0
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8       
                          888,300
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9                           
      888,300
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10           
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11           
      5.5%                                                               

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12           
      IN

- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
- -----------------------                                  ---------------------
  CUSIP NO. 100582105               13G                    PAGE 4 OF 12 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                                                                                
      Tudor BVI Futures, Ltd.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4                                 
      British Virgin Islands

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5                                                       
     NUMBER OF            
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6       
                          235,600
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7       
    REPORTING             0
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8       
                          235,600
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9                           
      235,600
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10           
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11           
      1.4%                                                               

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12           
      CO 

- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
- -----------------------                                  ---------------------
  CUSIP NO. 100582105               13G                    PAGE 5 OF 12 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                                                                                
      Tudor Properietary Trading, L.L.C.
      13-3720063
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4                                 
      Delaware

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5                                                       
     NUMBER OF            
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6       
                          58,900
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7       
    REPORTING             0
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8       
                          58,900
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9                           
      58,900
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10           
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11           
      0.4%                                                               

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12           
      OO

- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
- -----------------------                                  ---------------------
  CUSIP NO. 100582105               13G                    PAGE 6 OF 12 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                                                                                
      The Raptor Global Fund L.P.
      13-3735415
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4                                 
      Delaware

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5                                                       
     NUMBER OF            
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6       
                          119,000
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7       
    REPORTING             0
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8       
                          119,000
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9                           
      119,000
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10           
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11           
      0.7%                                                               

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12           
      PN

- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
- -----------------------                                  ---------------------
  CUSIP NO. 100582105               13G                    PAGE 7 OF 12 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                                                                                
      The Raptor Global Fund Ltd.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4                                 
      Cayman Islands

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5                                                       
     NUMBER OF            
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6       
                          417,500
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7       
    REPORTING             0
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8       
                          417,500
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9                           
      417,500
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10           
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11           
      2.6%                                                               

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12           
      CO

- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
- -----------------------                                  ---------------------
  CUSIP NO. 100582105               13G                    PAGE 8 OF 12 PAGES
- -----------------------                                  ---------------------
 
- ------------------------------------------------------------------------------
      NAME OF REPORTING PERSON
 1    S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                                                                                
      The Upper Mill Capital Appreciation Fund Ltd.
- ------------------------------------------------------------------------------
      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
 2                                                              (a) [_]
                                                                (b) [X]
                                                 
- ------------------------------------------------------------------------------
      SEC USE ONLY
 3
 

- ------------------------------------------------------------------------------
      CITIZENSHIP OR PLACE OF ORGANIZATION
 4                                 
      Cayman Islands

- ------------------------------------------------------------------------------
                          SOLE VOTING POWER
                     5                                                       
     NUMBER OF            
                          0
      SHARES       -----------------------------------------------------------
                          SHARED VOTING POWER
   BENEFICIALLY      6       
                          57,300
     OWNED BY
                   -----------------------------------------------------------
       EACH               SOLE DISPOSITIVE POWER
                     7       
    REPORTING             0
 
      PERSON       -----------------------------------------------------------
                          SHARED DISPOSITIVE POWER
       WITH          8       
                          57,300
- ------------------------------------------------------------------------------
      AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 9                           
      57,300
- ------------------------------------------------------------------------------
      CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*
10           
                                                                    [_]
 
- ------------------------------------------------------------------------------
      PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
11           
      0.4%                                                               

- ------------------------------------------------------------------------------
      TYPE OF REPORTING PERSON*
12           
      CO

- ------------------------------------------------------------------------------

                     *SEE INSTRUCTIONS BEFORE FILLING OUT!
<PAGE>
 
ITEM 1(A).  Name of Issuer:


            Boston Communications Group, Inc.

ITEM 1(B).  Address of Issuer's Principal Executive Offices:

            100 Sylvan Road, Suite 100
            Woburn, MA 01801

ITEM 2(A).  Name of Person Filing:

            Tudor Investment Corporation ("TIC")
            Paul Tudor Jones, II
            Tudor BVI Futures, Ltd. ("Tudor BVI")
            Tudor Proprietary Trading, L.L.C. ("TPT")
            The Raptor Global Fund L.P. ("Raptor L.P.")
            The Raptor Global Fund Ltd. ("Raptor Ltd.")
            The Upper Mill Capital Appreciation Fund Ltd. ("Upper Mill")
 
ITEM 2(B).  Address of Principal Business Office or, if none, Residence:

            The principal business office of each of TIC, TPT, and Raptor L.P.
            is:

               600 Steamboat Road
               Greenwich, CT 06830

            The principal business office of Mr. Jones is:

               c/o Tudor Investment Corporation
               600 Steamboat Road
               Greenwich, CT 06830

            The principal business office of each of Tudor BVI, Raptor Ltd. and
Upper Mill is:

               c/o CITCO
               Kaya Flamboyan 9
               Curacao, Netherland Antilles

ITEM 2(C).  Citizenship:

            TIC is a Delaware corporation
            Tudor BVI is a company organized under the laws of the British
            Virgin Islands
            Mr. Jones is a citizen of the United States
            Raptor L.P. is a Delaware limited partnership
            TPT is a Delaware limited liability company
            Raptor Ltd. and Upper Mill 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:
            100582105

                                     Page 9
<PAGE>
 
ITEM 3.     If this statement is filed pursuant to Rules 13(d)-1(b), or 
            13(d)-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 February 1, 1999).

            (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:

<TABLE> 
                <S>                                                               <C> 
                (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
</TABLE>

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

            Not applicable

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 10
<PAGE>
 
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 2, 1999

                                        TUDOR INVESTMENT CORPORATION


                                        By: /s/ Andrew S. Paul
                                           -------------------
                                           Andrew S. Paul
                                           Managing Director and General Counsel


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


                                        TUDOR BVI FUTURES, LTD.

                                        By:  Tudor Investment Corporation,
                                             Trading Advisor

                                        By: /s/ Andrew S. Paul
                                           -------------------
                                           Andrew S. Paul
                                           Managing Director and General Counsel

                                    Page 11
<PAGE>
 
                                   TUDOR PROPRIETARY TRADING, L.L.C.

                                   By: /s/ Andrew S. Paul
                                      -------------------
                                      Andrew S. Paul
                                      Managing Director and General Counsel


                                   THE RAPTOR GLOBAL FUND L.P.

                                   By: Tudor Investment Corporation,
                                       General Partner

                                       By: /s/ Andrew S. Paul
                                          ------------------
                                          Andrew S. Paul
                                          Managing Director and General Counsel


                                   THE RAPTOR GLOBAL FUND LTD.

                                   By: Tudor Investment Corporation,
                                       Investment Advisor


                                        By: /s/ Andrew S. Paul
                                           -------------------
                                           Andrew S. Paul
                                           Managing Director and General Counsel


                                   THE UPPER MILL CAPITAL APPRECIATION FUND LTD.

                                   By: Tudor Investment Corporation,
                                       Sub-Investment Manager

                                        By: /s/ Andrew S. Paul
                                           --------------------
                                           Andrew S. Paul
                                           Managing Director and General Counsel

                                    Page 12


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