Sec Form 4 Filing - Avenue Investments, L.P. @ MAGNACHIP SEMICONDUCTOR Corp - 2012-05-07

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Avenue Investments, L.P. 2. Issuer Name and Ticker or Trading Symbol MAGNACHIP SEMICONDUCTOR Corp [ MX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O AVENUE CAPITAL MANAGEMENT II, L.P., 399 PARK AVENUE, 6TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 05/07/2012 (Street) NEW YORK, NY10022 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, $0.01 par value 05/07/2012 S 378,610 D $ 10.8585 722,264 ( 1 ) D ( 2 ) Common Stock, $0.01 par value 05/07/2012 S 387,001 D $ 10.8585 732,051 ( 1 ) D ( 3 ) Common Stock, $0.01 par value 05/07/2012 S 1,135,621 D $ 10.8585 2,166,652 ( 1 ) D ( 4 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Avenue Investments, L.P. C/O AVENUE CAPITAL MANAGEMENT II, L.P. 399 PARK AVENUE, 6TH FLOOR NEW YORK, NY10022 X Avenue CDP Global Opportunities Fund LP C/O AVENUE CAPITAL MANAGEMENT II, L.P. 399 PARK AVENUE, 6TH FLOOR NEW YORK, NY10022 X Avenue International Master, L.P. C/O AVENUE CAPITAL MANAGEMENT II, L.P. 399 PARK AVENUE, 6TH FLOOR NEW YORK, NY10022 X LASRY MARC C/O AVENUE CAPITAL MANAGEMENT II, L.P. 399 PARK AVENUE, 6TH FLOOR NEW YORK, NY10022 X Signatures Avenue Investments, L.P. By: Avenue Partners, LLC, its General Partner, By: /s/ Eric Ross, attorney-in-fact for Marc Lasry, Managing Member 05/07/2012 Signature of Reporting Person Date Avenue-CDP Global Opportunities Fund, L.P. By: Avenue Global Opportunities Fund GenPar, LLC, its General Partner, By: /s/ Eric Ross, attorney-in-fact for Marc Lasry, Managing Member 05/07/2012 Signature of Reporting Person Date Avenue International Master, L.P. By: Avenue International Master GenPar, Ltd., its General Partner, By: /s/ Eric Ross, attorney-in-fact for Marc Lasry, Director 05/07/2012 Signature of Reporting Person Date /s/ Eric Ross, attorney-in-fact for Marc Lasry 05/07/2012 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The filing of this Form 4 shall not be construed as an admission that Avenue Global Opportunities GenPar, LLC ("Global GenPar"), Avenue International, Ltd. ("International"), Avenue International Master GenPar, Ltd. ("International GenPar"), Avenue Partners, LLC ("Avenue Partners"), Avenue Capital Management II, L.P. ("Avenue Capital Management"), Avenue Capital Management II GenPar, LLC ("Capital Management GenPar") or Marc Lasry (the "Controlling Persons") is or was for the purposes of Section 16(a) of the Securities Exchange Act of 1934, as amended, or otherwise the beneficial owner of any of the Common Stock, $0.01 par value, of MagnaChip Semiconductor Corporation directly held by Avenue Investments, L.P. ("Avenue Investments"), Avenue-CDP Global Opportunities Fund, L.P. ("Avenue-CDP") and Avenue International Master, L.P. ("International Master"). Pursuant to Rule 16a-1, the Controlling Persons disclaim beneficial ownership except to the extent of their pecuniary interest therein. ( 2 )After giving effect to the transactions reported herein, Avenue Investments holds directly 722,264 shares of Common Stock of the Issuer. Avenue Partners serves as the general partner of Avenue Investments. Avenue Partners holds indirectly the 722,264 shares of Common Stock of the Issuer held directly by Avenue Investments. Avenue Partners is entitled to receive a performance-based allocation from Avenue Investments. Mr. Lasry owns an interest in Avenue Partners and receives a portion of the profits allocation related to Avenue Investments. ( 3 )After giving effect to the transactions reported herein, Avenue-CDP holds directly 732,051 shares of Common Stock of the Issuer. Global GenPar serves as the general partner of Avenue-CDP. Global GenPar holds indirectly the 732,051 shares of Common Stock of the Issuer held directly by Avenue-CDP. Global GenPar is entitled to receive a performance-based allocation from Avenue-CDP. Mr. Lasry owns an interest in Global GenPar and receives a portion of the profits allocation related to Avenue-CDP. ( 4 )After giving effect to the transactions reported herein, International Master holds directly 2,166,652 shares of Common Stock of the Issuer. International is the sole limited partner of International Master, International GenPar serves as the general partner of International Master and Avenue Partners is the sole shareholder of International GenPar. Each of International, International GenPar and Avenue Partners holds indirectly the 2,166,652 shares of Common Stock of the Issuer held directly by International Master. International GenPar is entitled to receive a performance-based allocation from International Master, and Avenue Partners, as the sole shareholder of International GenPar, has an indirect interest in such allocation. Mr. Lasry owns an interest in International GenPar and Avenue Partners and receives a portion of the profits allocation related to International Master.

Remarks: This Form 4 is being filed by the Reporting Persons jointly with an additional Form 4 dated as of the same date with respect to theCommon Stock of the Issuer filed by Avenue Special Situations Fund IV, L.P., Avenue Capital Partners IV, LLC, GL Partners IV, LLC, AvenueSpecial Situations Fund V, L.P., Avenue Capital Partners V, LLC, GL Partners V, LLC, Avenue Capital Manangement II, L.P., AvenueCapital Management II GenPar, LLC and Marc Lasry due to the limitations on the number of Reporting Persons able to file a singleForm 4.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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