CUSIP NO. 683960108 SCHEDULE 13G/A PAGE 1 OF 11 PAGES =============================================================================== UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No.3) OPTi, Inc ------------------------------------------------------------------------------- (Name of Issuer) Common Stock, no par value ------------------------------------------------------------------------------- (Title of Class of Securities) 683960108 ------------------------------------------------------------------------------- (CUSIP Number) May 2, 2012 ------------------------------------------------------------------------------- (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) [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 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). Information regarding beneficial ownership is as of May 4, 2012. CUSIP NO. 683960108 SCHEDULE 13G/A PAGE 2 OF 11 PAGES -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON/S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON WEISS ASSET MANAGEMENT LP -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (A) [ ] (B) [ ] -------------------------------------------------------------------------------- 3. SEC USE ONLY -------------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE -------------------------------------------------------------------------------- 5. SOLE VOTING POWER 0 NUMBER OF -------------------------------------------------- SHARES 6. SHARED VOTING POWER BENEFICIALLY OWNED BY 545,327 EACH -------------------------------------------------- REPORTING 7. SOLE DISPOSITIVE POWER PERSON WITH: 0 -------------------------------------------------- 8. SHARED DISPOSITIVE POWER 545,327 -------------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 545,327 -------------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] -------------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 4.68% -------------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON* IA * Investment Adviser CUSIP NO. 683960108 SCHEDULE 13G/A PAGE 3 OF 11 PAGES -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON/S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON BIP GP LLC -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (A) [ ] (B) [ ] -------------------------------------------------------------------------------- 3. SEC USE ONLY -------------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE -------------------------------------------------------------------------------- 5. SOLE VOTING POWER 0 NUMBER OF -------------------------------------------------- SHARES 6. SHARED VOTING POWER BENEFICIALLY OWNED BY 545,327 EACH -------------------------------------------------- REPORTING 7. SOLE DISPOSITIVE POWER PERSON WITH: 0 -------------------------------------------------- 8. SHARED DISPOSITIVE POWER 545,327 -------------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 545,327 -------------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] -------------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 4.68% -------------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON* 00 - Limited Liability Company CUSIP NO. 683960108 SCHEDULE 13G/A PAGE 4 OF 11 PAGES -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON/S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON WAM GP LLC -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (A) [ ] (B) [ ] -------------------------------------------------------------------------------- 3. SEC USE ONLY -------------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OF ORGANIZATION DELAWARE -------------------------------------------------------------------------------- 5. SOLE VOTING POWER 0 NUMBER OF -------------------------------------------------- SHARES 6. SHARED VOTING POWER BENEFICIALLY OWNED BY 545,327 EACH -------------------------------------------------- REPORTING 7. SOLE DISPOSITIVE POWER PERSON WITH: 0 -------------------------------------------------- 8. SHARED DISPOSITIVE POWER 545,327 -------------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 545,327 -------------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] -------------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 4.68% -------------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON* 00 - Limited Liability Company CUSIP NO. 683960108 SCHEDULE 13G/A PAGE 5 OF 11 PAGES -------------------------------------------------------------------------------- 1. NAME OF REPORTING PERSON/S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON ANDREW M. WEISS, PH.D. -------------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (A) [ ] (B) [ ] -------------------------------------------------------------------------------- 3. SEC USE ONLY -------------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OF ORGANIZATION USA -------------------------------------------------------------------------------- 5. SOLE VOTING POWER 0 NUMBER OF -------------------------------------------------- SHARES 6. SHARED VOTING POWER BENEFICIALLY OWNED BY 545,327 EACH -------------------------------------------------- REPORTING 7. SOLE DISPOSITIVE POWER PERSON WITH: 0 -------------------------------------------------- 8. SHARED DISPOSITIVE POWER 545,327 -------------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 545,327 -------------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* [ ] -------------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 4.68% -------------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON* IN - Individual CUSIP NO. 683960108 SCHEDULE 13G/A PAGE 6 OF 11 PAGES ITEM 1. (a) Name of Issuer: OPTi, Inc. ----------------------------------- (b) Address of Issuer's Principal Executive Offices: One First Street, Suite 14 Los Altos, California 94022 ----------------------------------- ITEM 2. (a) and (c): Name and Citizenship of Persons Filing: (i) BIP GP LLC, a Delaware limited liability company ("BIP GP"). (ii) WAM GP LLC, a Delaware limited liability company ("WAM GP") (iii) Weiss Asset Management LP, a Delaware limited partnership ("Weiss Asset Management"). (iv) Andrew M. Weiss, Ph.D., a United States citizen. (b): Address of Principal Business Office: BIP GP, WAM GP, Weiss Asset Management, and Dr. Weiss have a business address of 222 Berkeley St., 16[th] Floor, Boston, Massachusetts 02116 (d) Title of Class of Securities: Common Stock, no par value ----------------- (e) CUSIP Number: 683960108 ------------------ ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO RULE 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 (15 U.S.C. 78o). (b) [ ] Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c). (c) [ ] Insurance Company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c). (d) [ ] Investment Company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8). (e) [ ] Investment Adviser registered under section 203 of the Investment Advisers Act or under the laws of any State (f) [ ] Employee 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) [ ] A Parent Holding Company or control person, in accordance with Section 240.13d-1(b)(ii)(G)(Note: See Item 7) (h) [ ] A Savings Association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813) (i) [ ] A Church Plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3) (j) [ ] Group, in accordance with Section 240.13d-1(b)(1)(ii)(J) CUSIP NO. 683960108 SCHEDULE 13G/A PAGE 7 OF 11 PAGES ITEM 4. OWNERSHIP Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item I. BIP GP* (a) Amount Beneficially Owned: 545,327 ------------------------------------------- (b) Percent of Class: 4.68% ---------------------------------------------------- (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 0 ------------------------ (ii) shared power to vote or to direct the vote: 545,327 ---------------------- (iii) sole power to dispose or to direct the disposition of: 0 ----------- (iv) shared power to dispose or to direct the disposition of: 545,327 ---------- WAM GP* (a) Amount Beneficially Owned: 545,327 ------------------------------------------- (b) Percent of Class: 4.68% ---------------------------------------------------- (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 0 ----------------------- (ii) shared power to vote or to direct the vote: 545,327 --------------------- (iii) sole power to dispose or to direct the disposition of: 0 ---------- (iv) shared power to dispose or to direct the disposition of: 545,327 --------- WEISS ASSET MANAGEMENT* (a) Amount Beneficially Owned: 545,327 ------------------------------------------- (b) Percent of Class: 4.68% ---------------------------------------------------- (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 0 ----------------------- (ii) shared power to vote or to direct the vote: 545,327 --------------------- (iii) sole power to dispose or to direct the disposition of: 0 ---------- (iv) shared power to dispose or to direct the disposition of: 545,327 ---------- CUSIP NO. 683960108 SCHEDULE 13G/A PAGE 8 OF 11 PAGES ANDREW M. WEISS, PH.D.* (a) Amount Beneficially Owned: 545,327 ------------------------------------------- (b) Percent of Class: 4.68% ---------------------------------------------------- (c) Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 0 ------------------------ (ii) shared power to vote or to direct the vote: 545,327 ----------------------- (iii) sole power to dispose or to direct the disposition of: 0 ----------- (iv) shared power to dispose or to direct the disposition of: 545,327 ----------- ----------------------- * Shares reported in this Schedule 13G represent shares beneficially owned by a private investment partnership (the "Partnership"). BIP GP is the sole general partner of the Partnership; Weiss Asset Management is the sole investment manager to the Partnership; WAM GP is the sole general partner of Weiss Asset Management; and Andrew Weiss is the managing member of WAM GP and BIP GP. Each of BIP GP, WAM GP, Weiss Asset Management and Andrew Weiss disclaims beneficial ownership of the shares reported herein as beneficially owned by each except to the extent of their respective pecuniary interest therein. The percent of class computations are based on 11,645,903 shares of Common Stock, no par value issued and outstanding as of January 31, 2012 as reported on the Form 10-Q filed with the SEC on February 14, 2012. 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 Not Applicable ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR CONTROL PERSON Not Applicable ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP Not Applicable CUSIP NO. 683960108 SCHEDULE 13G/A PAGE 9 OF 11 PAGES ITEM 9. NOTICE OF DISSOLUTION OF GROUP Not Applicable 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. ITEM 11. MATERIALS TO BE FILED AS EXHIBITS Exhibit 1 Joint Filing Agreement CUSIP NO. 683960108 SCHEDULE 13G/A PAGE 10 OF 11 PAGES SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I hereby certify that the information set forth in this statement is true, complete and correct. Dated: May 4, 2012 WEISS ASSET MANAGEMENT LP By: /s/ Georgiy Nikitin ----------------------------------- Georgiy Nikitin, Chief Compliance Officer BIP GP LLC By: /s/ Georgiy Nikitin ----------------------------------- Georgiy Nikitin, Chief Compliance Officer WAM GP LLC By: /s/ Georgiy Nikitin ----------------------------------- Georgiy Nikitin, Chief Compliance Officer ANDREW M. WEISS, PH.D. By: /s/ Georgiy Nikitin ----------------------------------- Georgiy Nikitin, Attorney in Fact for Andrew Weiss CUSIP NO. 683960108 SCHEDULE 13G/A PAGE 11 OF 11 PAGES Exhibit 1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, Weiss Asset Management LP, BIP GP LLC, WAM GP LLC and Andrew M. Weiss, hereby agree to the joint filing on behalf of each of them of a statement on Schedule 13G and/or 13D (including any and all amendments thereto) with respect to the Common Stock of OPTi Inc., and further agree that this Joint Filing Agreement, as may be amended from time to time, shall be included as an Exhibit to such joint filings. The undersigned further agree that each party hereto is responsible for the timely filing of such Statement on Schedule 13G and/or 13D and any amendments thereto, and for the accuracy and completeness of the information concerning such party contained therein; provided, however, that no party is responsible for the accuracy or completeness of the information concerning any other party, unless such party knows or has reason to believe that such information is inaccurate. This Joint Filing Agreement may be signed in counterparts with the same effect as if the signature on each counterpart were upon the same instrument. IN WITNESS WHEREOF, the undersigned have executed this Agreement as of February 14, 2012. WEISS ASSET MANAGEMENT LP By: /s/ Georgiy Nikitin ----------------------------------- Georgiy Nikitin, Chief Compliance Officer BIP GP LLC By: /s/ Georgiy Nikitin ----------------------------------- Georgiy Nikitin, Chief Compliance Officer WAM GP LLC By: /s/ Georgiy Nikitin ----------------------------------- Georgiy Nikitin, Chief Compliance Officer Andrew M. Weiss By: /s/ Georgiy Nikitin ----------------------------------- Attorney-in-Fact for Andrew M. Weiss