SECURITIES AND EXCHANGE COMMISSION
				WASHINGTON, DC  20549

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

				    SCHEDULE 13D
				   (Rule 13d-101)

	     INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
	     TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO
				RULE 13d-2(a)

		      	       (Amendment No. 15)

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

	       		Common Stock, No Par Value
			    -----------------------------
			    (Title of Class of Securities)

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

                  		Scott B. Bernstein, Esq.
		               Caxton Associates, L.L.C.
			      731 Alexander Road, Bldg. 2
			      Princeton, New Jersey  08540
				    (609) 419-1800

  (Name, Address and Telephone Number of Person Authorized to
   Receive Notices and Communications)

				    October 9, 2003
			------------------------------------
 	(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 that is the subject of this Schedule 13D,
and is filing this schedule because of Rule 13d-1 (e), 13d-1 (f),
or 13d-1 (g), check the following box  o.

Note.  Schedules filed in paper format shall include a signed
original and five copies of the schedule, including all exhibits.
See Rule 13d-7(b) for other parties to whom copies are to be sent.
(Continued on following pages)
(Page 1 of 6 Pages)
_________________
1 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).



				SCHEDULE 13D

CUSIP NO. 683960108

1  NAME OF REPORTING PERSONS
   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

   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 OF ORGANIZATION
   British Virgin Islands

----------------------------------------------------------------------
NUMBER OF	7  SOLE VOTING POWER
   		0
SHARES	        ------------------------------------------------------

BENEFICIALLY	8  SHARED VOTING POWER
   		622,406
OWNED BY	------------------------------------------------------

EACH		9  SOLE DISPOSITIVE POWER
		0
REPORTING	------------------------------------------------------

PERSON		10 SHARED DISPOSITIVE POWER
		622,406
WITH
		------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     622,406
----------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
     SHARES*

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

     5.3%
----------------------------------------------------------------------
14   TYPE OF REPORTING PERSON*

     CO
----------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!




CUSIP NO. 683960108

1  NAME OF REPORTING PERSONS
   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

   Caxton Associates, L.L.C.
----------------------------------------------------------------------
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 OF ORGANIZATION
   Delaware

----------------------------------------------------------------------
NUMBER OF	7  SOLE VOTING POWER
   		0
SHARES	        ------------------------------------------------------

BENEFICIALLY	8  SHARED VOTING POWER
   		622,406
OWNED BY	------------------------------------------------------

EACH		9  SOLE DISPOSITIVE POWER
		0
REPORTING	------------------------------------------------------

PERSON		10 SHARED DISPOSITIVE POWER
		622,406
WITH
		------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     622,406
----------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
     SHARES*

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

     5.3%
----------------------------------------------------------------------
14   TYPE OF REPORTING PERSON*

     CO
----------------------------------------------------------------------
*SEE INSTRUCTIONS BEFORE FILLING OUT!

			 SCHEDULE 13D

CUSIP NO. 683960108

1  NAME OF REPORTING PERSONS
   S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY)

   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 OF ORGANIZATION
   United States

----------------------------------------------------------------------
NUMBER OF	7  SOLE VOTING POWER
   		0
SHARES		------------------------------------------------------

BENEFICIALLY	8  SHARED VOTING POWER
   		622,406
OWNED BY	------------------------------------------------------

EACH		9  SOLE DISPOSITIVE POWER
		0
REPORTING	------------------------------------------------------

PERSON		10 SHARED DISPOSITIVE POWER
		622,406
WITH
		------------------------------------------------------
11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     622,406
----------------------------------------------------------------------
12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN
     SHARES*

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

     5.3%
----------------------------------------------------------------------
14   TYPE OF REPORTING PERSON*

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

*SEE INSTRUCTIONS BEFORE FILLING OUT!

This Amendment 15 to Schedule 13D relates to the Common Stock, no par
Value per share (the "Common Stock"), of OPTI, Inc., a
California corporation (the "Company"), 880 Maude Avenue, Suite A,
Mountain View, CA  94043


Item 3.  Source and Amount of Funds and other Consideration.


      Item 3 of the Schedule 13D is hereby amended by replacing
      it with the following paragraphs:

"No amounts were paid (excluding commissions, if any) in the series of
transactions to which Caxton International sold shares of Common
Stock since the most recent filing of Schedule 13D on September 3,
2003."



Item 5.	Interest in Securities of the Issuer.

	Subparagraph (a) of Item 5 of the Schedule 13D is hereby
	amended by replacing said subparagraph with the following
	subparagraph:

"(a)  Caxton International beneficially owns 622,406 shares
of Common Stock (the "Shares"), representing approximately
5.3% of the total shares of Common Stock issued and outstanding.
The decrease in beneficial ownership from the date of Amendment
No. 14 to Schedule 13D filed September 3, 2003 is a result of the
net sale of Shares by Caxton International being reported
hereunder."



	Subparagraph (c) of Item 5 of the Schedule 13D is hereby
        amended by replacing said subparagraph with the following
	subparagraph:

"(c)  Caxton International sold shares of Common Stock in a
series of open market transactions effected with independent
brokers, since the most recent filing of Schedule 13D. See
Schedule A for disclosure of (1) the date, (2) the price and
(3) the amount of Shares sold by Caxton International since
the most recent filing of Schedule 13D on September 3, 2003."


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.


October 14, 2003



CAXTON INTERNATIONAL LIMITED


By:/s/Joseph Kelly
      Name:  Joseph Kelly
      Title: Vice President & Treasurer


By:/s/Maxwell Quin
      Name:  Maxwell Quin
      Title:   Vice President & Secretary



CAXTON ASSOCIATES, L.L.C.

By:/s/Scott B. Bernstein
      Name:  Scott B. Bernstein
      Title: Secretary


/s/Bruce S. Kovner
Bruce S. Kovner, by Scott B. Bernstein as
Attorney-in-Fact



		Schedule A

	Caxton International Limited
		No of Shares	        Price Per Share
Trade Date	Purchased (Sold)	(Excluding Commission)



03-SEP-03	 (1,200)		 1.4017
04-SEP-03	 (1,300)		 1.4000
08-SEP-03	   (200)		 1.4000
09-SEP-03	 (1,700)		 1.4247
11-SEP-03	 (5,000)		 1.4000
12-SEP-03	(10,000)		 1.4012
15-SEP-03	 (6,400)		 1.5222
16-SEP-03	(15,000)		 1.5400
17-SEP-03	(15,000)		 1.5100
18-SEP-03	 (3,400)		 1.5715
19-SEP-03	(25,000)		 1.5525
22-SEP-03	 (9,100)		 1.5511
23-SEP-03	(13,263)		 1.5500
09-OCT-03	 (3,800)		 1.5407