UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549

                                 SCHEDULE 13G/A
                                (Rule 13d-102)


                 INFORMATION STATEMENT PURSUANT TO RULE 13d-2(b)
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934

                               (Amendment No. 1)*


                             ASPEN TECHNOLOGY, INC.
--------------------------------------------------------------------------------
                                (Name of Issuer)


                     COMMON STOCK, PAR VALUE $0.10 PER SHARE
--------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                   045327103
--------------------------------------------------------------------------------
                                 (CUSIP Number)


                                 July 24, 2002
--------------------------------------------------------------------------------
            (Date of Event Which Requires Filing of this Statement)


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

          [_]  Rule 13d-1(b)

          [_]  Rule 13d-(c)

          [_]  Rule 13d-1(d)
------------------------------------- ---------------------

If this statement is filed pursuant to Rule 13d-2(b), check this box [X].

*    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 of 9 Pages



CUSIP No. 045327103                  13G                    Page 2  of 9  Pages


________________________________________________________________________________
1.   NAME OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

     Cavallo Capital Corp.

________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [X]
                                                                 (b)  [_]

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION


     New York
________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           0
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY          1,916,877
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         0
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH            1,916,877
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     1,916,877
________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          [_]

                               Page 2 of 9 Pages



________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)


     4.999% (see footnote 1)
________________________________________________________________________________
12.  TYPE OF REPORTING PERSON*


     CO
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!


(1)  Based on  38,345,189  shares of Common Stock issued and  outstanding  as of
November 8, 2002.

                               Page 3 of 9 Pages



CUSIP No. 045327103                  13G                    Page 4  of 9  Pages


________________________________________________________________________________
1.   NAMES OF REPORTING PERSONS
     I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS

     Pine Ridge Financial Inc.

________________________________________________________________________________
2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                 (a)  [X]
                                                                 (b)  [_]

________________________________________________________________________________
3.   SEC USE ONLY



________________________________________________________________________________
4.   CITIZENSHIP OR PLACE OF ORGANIZATION


     British Virgin Islands
________________________________________________________________________________
  NUMBER OF    5.   SOLE VOTING POWER

   SHARES           0
               _________________________________________________________________
BENEFICIALLY   6.   SHARED VOTING POWER

  OWNED BY          1,916,877
               _________________________________________________________________
    EACH       7.   SOLE DISPOSITIVE POWER

  REPORTING         0
               _________________________________________________________________
   PERSON      8.   SHARED DISPOSITIVE POWER

    WITH            1,916,877
________________________________________________________________________________
9.   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON


     1,916,877
________________________________________________________________________________
10.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                                                                          [_]
________________________________________________________________________________
11.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)


     4.999% (see Footnote 1)
________________________________________________________________________________
12.  TYPE OF REPORTING PERSON*


     CO
________________________________________________________________________________
                     *SEE INSTRUCTIONS BEFORE FILLING OUT!

                               Page 4 of 9 Pages


ITEM 1.

        (a)   Name of Issuer:

              Aspen Technology, Inc.

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

              10 Canal Park
              Cambridge, MA 02141

ITEM 2.

        (a)   Name of Person Filing:

              Cavallo Capital Corp. ("Cavallo")
              Pine Ridge Financial Inc. ("Pine Ridge")

        (b)   Address of Principal Business Office:

              Cavallo:
              660 Madison Avenue, 18th floor
              New York, NY 10021

              Pine Ridge:
              Gonzalez-Ruiz & Aleman (BVI) Limited, Wickhams Cay I,
              Vanterpool Plaza
              P.O. Box  873, Road Town
              Tortolla, British Virgin Islands

        (c)   Citizenship:

              Cavallo:
              New York

              Pine Ridge:
              British Virgin Islands

        (d)   Title of Class of Securities:

              Common Stock, par value $0.10 per share

        (e)   CUSIP Number:

              045327103

ITEM 3.     IF THIS STATEMENT IS FILED  PURSUANT TO  RULES 13d-1(b), OR 13d-2(b)
            OR (c), CHECK WHETHER THE PERSONS FILING ARE A:

                               Page 5 of 9 Pages



     (a)  [_]  Broker or dealer registered under Section 15 of the Exchange Act;

     (b)  [_]  Bank as defined in Section 3(a)(6) of the Exchange Act;

     (c)  [_]  Insurance company as defined in Section  3(a)(19) of the Exchange
               Act;

     (d)  [_]  Investment  company  registered under Section 8 of the Investment
               Company Act;

     (e)  [_]  An investment advisor in accordance with Rule 13d-1(b)(1)(ii)(E);

     (f)  [_]  An employee  benefit plan or endowment  fund in  accordance  with
               Rule 13d-1(b)(1)(ii)(F);

     (g)  [_]  A parent  holding  company or control  person in accordance  with
               Rule 13d-1(b)(1)(ii)(G);

     (h)  [_]  A savings  association  as defined in Section 3(b) of the Federal
               Deposit Insurance Act;

     (i)  [_]  A  church  plan  that  is  excluded  from  the  definition  of an
               investment  company  under  Section  3(c)(14)  of the  Investment
               Company Act;

     (j)  [_]  Group, in accordance with Rule 13d-1(b)(1)(ii)(J).


ITEM 4.  OWNERSHIP.

     Provide  the  following  information  regarding  the  aggregate  number and
     percentage of the class of securities of the issuer identified in Item 1.

     (a)  Amount Beneficially Owned:

     (b)  Percent of class:

     (c)  Number of shares as to which such person has:

          (i)   Sole power to vote or to direct the vote:

          (ii)  Shared power to vote or to direct the vote:

          (iii) Sole power to dispose or to direct the disposition of:

          (iv)  Shared power to dispose or to direct the disposition of:


                               Page 6 of 9 Pages



ITEM 5.  OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.

         If this statement is being filed to report the fact 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.

         Inapplicable


ITEM 7.  IDENTIFICATION AND  CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE
         SECURITY  BEING  REPORTED ON BY THE PARENT  HOLDING  COMPANY.

         Inapplicable


ITEM 8.  IDENTIFICATION  AND  CLASSIFICATION  OF MEMBERS OF THE GROUP.

         See the Joint Filing Agreement Attached  hereto as an Exhibit.


ITEM 9.  NOTICE OF DISSOLUTION OF GROUP.

         Inapplicable


ITEM 10. CERTIFICATION.

         Inapplicable


                               Page 7 of 9 Pages



                                    SIGNATURE

     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.

Date: January 31, 2003


                                        Cavallo Capital Corp.


                                         /s/ Eldad Gal
                                        ----------------------------------------
                                        Name:   Eldad Gal
                                        Title:  Managing Director



                                        Pine Ridge Financial Inc.
                                         /s/ Eldad Gal
                                        ----------------------------------------
                                        Name:   Eldad Gal
                                        Title:  Authorized Signatory


                               Page 8 of 9 Pages



                             JOINT FILING AGREEMENT

     In accordance with rule 13d-1(k)(1) of the Securities Exchange Act of 1934,
as amended,  the undersigned hereby agree to the joint filing with each other of
the attached statement on Schedule 13G/A, and all amendments  thereto,  and that
such statement, and all amendments thereto, is made on behalf of each of them.

     IN WITNESS  WHEREOF,  the  undersigned  hereby  executed this  agreement on
January 31, 2003.


                                        Cavallo Capital Corp.


                                        /s/ Eldad Gal
                                        ----------------------------------------
                                        Name:     Eldad Gal
                                        Title:    Managing Director


                                        Pine Ridge Financial Inc.


                                        /s/ Eldad Gal
                                        ----------------------------------------
                                        Name:     Eldad Gal
                                        Title:    Authorized Signatory



                               Page 9 of 9 Pages