OPTI INC
SC 13D, 1998-02-09
SEMICONDUCTORS & RELATED DEVICES
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                       UNITED STATES                OMB Number:       3235-0145
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                                                    ---------------------------

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                               (Amendment No. 1)*


                                   OPTi, Inc.
- --------------------------------------------------------------------------------
                                (Name of Issuer)


                          Common Stock, $0.01 par value
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                    683960108
- --------------------------------------------------------------------------------
                                 (CUSIP Number)


                            Scott B. Bernstein, Esq.
                               Caxton Corporation
                              315 Enterprise Drive
                          Plainsboro, New Jersey 08536
                                 (609) 936-2580
- --------------------------------------------------------------------------------
           (Name, Address and Telephone Number of Person Authorized to
                       Receive Notices and Communications)


                                February 5, 1998
- -------------------------------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)


If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1 (b)(3) or (4), check the following box [ ].

Check the following box if a fee is being paid with the statement [ ]. (A fee is
not required only if the reporting person:  (1) has a previous statement on file
reporting  beneficial  ownership  of more  than  five  percent  of the  class of
securities  described  in Item 1;  and (2) has  filed  no  amendment  subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7.)

Note: Six copies of this statement, including all exhibits, should be filed with
the  Commission.  See Rule  13d-1(a) for other  parties to whom copies are to be
sent.

*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
disclosures provided in a prior cover page.

The information required on 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>


                                  SCHEDULE 13D


CUSIP NO.  76655L101                                    Page  2  of  7  Pages
           ---------                                         ---    ---      


- --------------------------------------------------------------------------------
1    NAME OF REPORTING PERSON
     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

     Caxton International Limited
- --------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*               (a) [ ]
                                                                     (b) [ ]

- --------------------------------------------------------------------------------
3    SEC USE ONLY


- --------------------------------------------------------------------------------
4    SOURCE OF FUNDS*

     WC
- --------------------------------------------------------------------------------
5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
     ITEMS 2(d) or 2(e)

- --------------------------------------------------------------------------------
6    CITIZENSHIP OR PLACE OR ORGANIZATION

     British Virgin Islands
- --------------------------------------------------------------------------------
    NUMBER OF            7    SOLE VOTING POWER

     SHARES                   0
                    ------------------------------------------------------------
  BENEFICIALLY           8    SHARED VOTING POWER

    OWNED BY                  814,500
                    ------------------------------------------------------------
      EACH               9    SOLE DISPOSITIVE POWER

    REPORTING                 0
                    ------------------------------------------------------------
     PERSON              10   SHARED DISPOSITIVE POWER

      WITH                    814,500
- --------------------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     814,500
- --------------------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                   [ ]
- --------------------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     6.27%
- --------------------------------------------------------------------------------
14   TYPE OF REPORTING PERSON*

     CO
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
          INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
      (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>


                                  SCHEDULE 13D

CUSIP NO.  76655L101                                      Page  3  of  7  Pages
           ---------                                           ---    ---      

- --------------------------------------------------------------------------------
1    NAME OF REPORTING PERSON
     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

     Bruce S. Kovner
- --------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*               (a) [ ]
                                                                     (b) [ ]

- --------------------------------------------------------------------------------
3    SEC USE ONLY


- --------------------------------------------------------------------------------
4    SOURCE OF FUNDS*

     Not Applicable
- --------------------------------------------------------------------------------
5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO
     ITEMS 2(d) or 2(e)

- --------------------------------------------------------------------------------
6    CITIZENSHIP OR PLACE OR ORGANIZATION

     United States
- --------------------------------------------------------------------------------
    NUMBER OF            7    SOLE VOTING POWER

     SHARES                   0
                    ------------------------------------------------------------
  BENEFICIALLY           8    SHARED VOTING POWER

    OWNED BY                  814,500
                    ------------------------------------------------------------
      EACH               9    SOLE DISPOSITIVE POWER

    REPORTING                 0
                    ------------------------------------------------------------
     PERSON              10   SHARED DISPOSITIVE POWER

      WITH                    814,500
- --------------------------------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     814,500
- --------------------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                                                        [ ]
- --------------------------------------------------------------------------------
13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

     6.27%
- --------------------------------------------------------------------------------
14   TYPE OF REPORTING PERSON*

     IN
- --------------------------------------------------------------------------------

                      *SEE INSTRUCTIONS BEFORE FILLING OUT!
          INCLUDE BOTH SIDES OF THE COVER PAGE, RESPONSES TO ITEMS 1-7
      (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION.


<PAGE>


     This  Amendment 1 to Schedule  13D relates to the Common  Stock,  par value
$.01 per share (the "Common  Stock"),  of OPTi,  Inc., a California  corporation
(the  "Company"),  888  Tasman  Drive,  Milpitas,  CA 95035.  This  Amendment  1
supplements  and amends the initial  Statement  on Schedule  13D (the  "Schedule
13D") filed with the Securities and Exchange Commission on January 9, 1998 (with
respect to transactions  occurring  through and including  December 31, 1997) by
the persons filing this Amendment 1.


Item 3:   Source and Amount of Funds or Other Consideration.
- -------   --------------------------------------------------

     The  information  set forth in Item 3 ("Source and Amount of Funds or Other
Consideration")  of the  Schedule  13D is hereby  amended  and  supplemented  by
inserting the following paragraph at the end thereof:

     "An  aggregate of $943,308  (excluding  commissions,  if any) was paid in a
series of  transactions  pursuant to which  Caxton  International  acquired  the
Shares  (as  defined  in Item 5  below)  since  December  31,  1997.  All of the
foregoing amounts were paid out of Caxton International's working capital."


Item 5:   Interest in Securities of the Issuer.
- -------   -------------------------------------

     The  information  set  forth  in Item 5  ("Interest  in  Securities  of the
Issuer"),  subparagraph  (a) of the Schedule 13D is hereby  amended by replacing
the first two sentences thereof with the following two sentences:

     "(a) Caxton International  beneficially owns 814,500 shares of Common Stock
(the "Shares").  The Shares represent approximately 6.27% of the total shares of
Common Stock issued and outstanding."

     The  information  set forth in Item 5 ("Interest  in the  Securities of the
Issuer"),   subparagraph   (c)  of  the  Schedule  13D  is  hereby  amended  and
supplemented by adding the following paragraph at the end thereof:

     "Caxton International acquired additional Shares in a series of open market
transactions  effected  primarily  with  independent  brokers  and,  to a lesser
extent, directly with market makers utilizing the NASDAQ System, between January
1, 1998 and February 5, 1998.  See Exhibit B for disclosure of (1) the date, (2)
the price and (3) the amount of Stock purchased or sold by Caxton  International
and subsidiaries since December 31, 1997."


                                Page 4 of 7 Pages


<PAGE>


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


February __, 1998                            CAXTON INTERNATIONAL LIMITED


                                             By:______________________________
                                                Name:
                                                Title:


                                             By:______________________________
                                                Name:
                                                Title:

                                              ---------------------------------
                                                    Bruce S. Kovner


                                Page 5 of 7 Pages


<PAGE>


                                       EXHIBIT B                    PRICE PER
                              CAXTON INTERNATIONAL LIMITED            SHARE
                                    NO. OF SHARES                  (Excluding
    TRADE DATE                     PURCHASED (SOLD)                Commission)
    ----------                ----------------------------       ---------------

     2-Jan-98                          20,000                        $6.3125
     6-Jan-98                           5,000                         6.0625
     6-Jan-98                           5,000                         6.125
     7-Jan-98                           3,500                         6
     7-Jan-98                           5,000                         6.125
     8-Jan-98                          12,900                         6.2083
     8-Jan-98                           7,000                         6.2232
     8-Jan-98                           5,000                         6.3125
     9-Jan-98                          48,000                         6.4674
     9-Jan-98                          17,000                         6.5955
     5-Feb-98                          14,600                         6.625


                                Page 6 of 7 Pages


<PAGE>


                                                                     Exhibit 1


                           JOINT ACQUISITION STATEMENT
                          PURSUANT TO RULE 13d-1(f)(1)


     The  undersigned  acknowledge  and agree that the  foregoing  statement  on
Schedule  13D is  filed  on  behalf  of each of the  undersigned  and  that  all
subsequent amendments to this statement on Schedule 13D shall be filed on behalf
of each of the  undersigned  without the  necessity of filing  additional  joint
acquisition   statements.   The  undersigned  acknowledge  that  each  shall  be
responsible for the timely filing of such  amendments,  and for the completeness
and accuracy of the  information  concerning  him or it contained  therein,  but
shall not be responsible  for the  completeness  and accuracy of the information
concerning the other,  except to the extent that he or it knows or has reason to
believe that such information is inaccurate.



Dated:  February   , 1998                    CAXTON INTERNATIONAL LIMITED





                                             By:______________________________
                                                Name:
                                                Title:


                                             By:______________________________
                                                Name:
                                                Title:

                                              ---------------------------------
                                              Bruce S. Kovner


                                Page 7 of 7 Pages



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