SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 ---------- SCHEDULE 13G UNDER THE SECURITIES ACT OF 1934 (AMENDMENT NO. __) Universal Compression Holdings, Inc. ------------------------------------- (Name of Issuer) COMMON STOCK, PAR VALUE $0.01 PER SHARE ----------------------------------------- (Title of Class of Securities) 913431102 -------------- (CUSIP Number) January 11, 2007 ------------------------------------ (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 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. (Continued on following pages) (Page 1 of 16 Pages) ------------------- ------------------ CUSIP NO. 913431102 13G Page 2 of 16 Pages ------------------- ------------------ -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY) TPG-Axon GP, LLC ("GPLLC") -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) |X| (b) |_| -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 0 --------------------------------------------------------- BENEFICIALLY 6 SHARED VOTING POWER 2,000,000 --------------------------------------------------------- OWNED BY 7 SOLE DISPOSITIVE POWER EACH 0 REPORTING --------------------------------------------------------- PERSON 8 SHARED DISPOSITIVE POWER WITH 2,000,000 -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,000,000 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 6.6%* -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON OO -------------------------------------------------------------------------------- * All percentage ownerships reported in this Schedule 13G are based on 30,413,014 shares of Common Stock issued and outstanding as of November 2, 2006, as reported by the Issuer (as defined below) in its Quarterly Report on Form 10-Q for the fiscal quarter ended September 30, 2006, filed with the Securities and Exchange Commission on November 8, 2006. ------------------- ------------------ CUSIP NO. 913431102 13G Page 3 of 16 Pages ------------------- ------------------ -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY) TPG-Axon Partners GP, L.P. ("PartnersGP") -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) |X| (b) |_| -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 0 --------------------------------------------------------- BENEFICIALLY 6 SHARED VOTING POWER 1,300,070 --------------------------------------------------------- OWNED BY 7 SOLE DISPOSITIVE POWER EACH 0 REPORTING --------------------------------------------------------- PERSON 8 SHARED DISPOSITIVE POWER WITH 1,300,070 -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,300,070 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 4.3%* -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON PN -------------------------------------------------------------------------------- ------------------- ------------------ CUSIP NO. 913431102 13G Page 4 of 16 Pages ------------------- ------------------ -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY) TPG-Axon Partners, LP ("TPG-Axon Domestic") -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) |X| (b) |_| -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 0 --------------------------------------------------------- BENEFICIALLY 6 SHARED VOTING POWER 1,300,070 --------------------------------------------------------- OWNED BY 7 SOLE DISPOSITIVE POWER EACH 0 REPORTING --------------------------------------------------------- PERSON 8 SHARED DISPOSITIVE POWER WITH 1,300,070 -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,300,070 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 4.3%* -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON PN -------------------------------------------------------------------------------- ------------------- ------------------ CUSIP NO. 913431102 13G Page 5 of 16 Pages ------------------- ------------------ -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY) TPG-Axon Capital Management, L.P. ("TPG-Axon Management") -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) |X| (b) |_| -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 0 --------------------------------------------------------- BENEFICIALLY 6 SHARED VOTING POWER 2,000,000 --------------------------------------------------------- OWNED BY 7 SOLE DISPOSITIVE POWER EACH 0 REPORTING --------------------------------------------------------- PERSON 8 SHARED DISPOSITIVE POWER WITH 2,000,000 -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,000,000 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 6.6%* -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON PN -------------------------------------------------------------------------------- ------------------- ------------------ CUSIP NO. 913431102 13G Page 6 of 16 Pages ------------------- ------------------ -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY) TPG-Axon Partners (Offshore), Ltd. ("TPG-Axon Offshore") -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) |X| (b) |_| -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 0 --------------------------------------------------------- BENEFICIALLY 6 SHARED VOTING POWER 699,930 --------------------------------------------------------- OWNED BY 7 SOLE DISPOSITIVE POWER EACH 0 REPORTING --------------------------------------------------------- PERSON 8 SHARED DISPOSITIVE POWER WITH 699,930 -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 699,930 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 2.3%* -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON OO -------------------------------------------------------------------------------- ------------------- ------------------ CUSIP NO. 913431102 13G Page 7 of 16 Pages ------------------- ------------------ -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY) Dinakar Singh LLC ("Singh LLC") -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) |X| (b) |_| -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 0 --------------------------------------------------------- BENEFICIALLY 6 SHARED VOTING POWER 2,000,000 --------------------------------------------------------- OWNED BY 7 SOLE DISPOSITIVE POWER EACH 0 REPORTING --------------------------------------------------------- PERSON 8 SHARED DISPOSITIVE POWER WITH 2,000,000 -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,000,000 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 6.6%* -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON OO -------------------------------------------------------------------------------- ------------------- ------------------ CUSIP NO. 913431102 13G Page 8 of 16 Pages ------------------- ------------------ -------------------------------------------------------------------------------- 1 NAME OF REPORTING PERSON I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (ENTITIES ONLY) Dinakar Singh ("Mr. Singh") -------------------------------------------------------------------------------- 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) |X| (b) |_| -------------------------------------------------------------------------------- 3 SEC USE ONLY -------------------------------------------------------------------------------- 4 CITIZENSHIP OR PLACE OF ORGANIZATION USA -------------------------------------------------------------------------------- NUMBER OF 5 SOLE VOTING POWER SHARES 0 --------------------------------------------------------- BENEFICIALLY 6 SHARED VOTING POWER 2,000,000 --------------------------------------------------------- OWNED BY 7 SOLE DISPOSITIVE POWER EACH 0 REPORTING --------------------------------------------------------- PERSON 8 SHARED DISPOSITIVE POWER WITH 2,000,000 -------------------------------------------------------------------------------- 9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,000,000 -------------------------------------------------------------------------------- 10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES |_| -------------------------------------------------------------------------------- 11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 6.6%* -------------------------------------------------------------------------------- 12 TYPE OF REPORTING PERSON IN -------------------------------------------------------------------------------- ------------------- ------------------ CUSIP NO. 913431102 13G Page 9 of 16 Pages ------------------- ------------------ ITEM 1. (a) Name of Issuer: Universal Compression Holdings, Inc. (b) Address of Issuer's Principal Executive Offices: 4444 Brittmoore Road Houston, Texas 77041 ITEM 2. (a) Name of Person Filing: GPLLC, PartnersGP, TPG-Axon Domestic, TPG-Axon Management, TPG-Axon Offshore, Singh LLC and Mr. Singh (b) Address of Principal Office: (All, except TPG-Axon TPG-Axon Offshore Offshore) 888 Seventh Avenue c/o Goldman Sachs (Cayman) Trust Limited 38th Floor PO Box 896 GT, Harbour Centre New York, New York 10019 George Town, Grand Cayman Cayman Islands, BWI (c) Citizenship: (All, except TPG-Axon Offshore and Mr. Singh) Delaware; TPG-Axon Offshore: Cayman Islands; Mr. Singh: United States. (d) Title of Class of Securities: Common Stock, par value $0.01 per share (e) CUSIP Number: 913431102 ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO SS.SS.240.13D-1(B) OR 240.13D-2(B) OR (C), 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) |_| An investment adviser in accordance with ss.240.13d-1(b)(1)(ii)(E). (f) |_| An employee benefit plan or endowment fund in accordance with ss.240.13d-1(b)(1)(ii)(F). ------------------- ------------------ CUSIP NO. 913431102 13G Page 10 of 16 Pages ------------------- ------------------ (g) |_| A parent holding company or control person in accordance with ss.240.13d-1(b)(1)(ii)(G). (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). IF THIS STATEMENT IS FILED PURSUANT TO Rule 13d-1(c), CHECK THIS BOX. |X| ITEM 4. OWNERSHIP The information required by Items 4(a) - (c) is set forth in rows 5 - 11 of the cover page for each Reporting Person hereto and is incorporated herein by reference for each such Reporting Person. TPG-Axon Management, as investment manager to TPG-Axon Domestic and TPG-Axon Offshore, has the power to direct the disposition and voting of the Shares held by TPG-Axon Domestic and TPG-Axon Offshore. PartnersGP is the general partner of TPG-Axon Domestic. GPLLC is the general partner of PartnersGP and TPG-Axon Management. Singh LLC is a Managing Member of GPLLC. Mr. Singh, an individual, is the Managing Member of Singh LLC and in such capacity may be deemed to control Singh LLC, GPLLC and TPG-Axon Management, and therefore may be deemed the beneficial owner of the securities held by TPG-Axon Domestic and TPG-Axon Offshore. Mr. Singh and Eric Mandelblatt ("Mr. Mandelblatt") are Co-Chief Executive Officers of TPG-Axon Management. Each of Singh LLC, GPLLC, PartnersGP, Mr. Singh and Mr. Mandelblatt disclaims beneficial ownership of all of the shares of Common Stock reported in this 13G. ------------------- ------------------ CUSIP NO. 913431102 13G Page 11 of 16 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 |_|. Not applicable. ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON See Item 4. 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. ITEM 9. NOTICE OF DISSOLUTION OF THE 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. ------------------- ------------------- CUSIP NO. 913431102 13G Page 12 of 16 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. Dated: January 22, 2007 TPG-Axon GP, LLC By: /s/ Dinakar Singh ---------------------- Dinakar Singh Co-President TPG-Axon Partners GP, L.P. By: TPG-Axon GP, LLC, general partner By: /s/ Dinakar Singh ---------------------- Dinakar Singh Co-President TPG-Axon Partners, LP By: TPG-Axon Partners GP, L.P., general partner By: TPG-Axon GP, LLC, general partner By: /s/ Dinakar Singh ---------------------- Dinakar Singh Co-President TPG-Axon Capital Management, L.P. By: TPG-Axon GP, LLC, general partner By: /s/ Dinakar Singh ---------------------- Dinakar Singh Co-President ------------------- ------------------- CUSIP NO. 913431102 13G Page 13 of 16 Pages ------------------- ------------------- TPG-Axon Partners (Offshore), Ltd. By: /s/ Dinakar Singh ---------------------- Dinakar Singh Director Dinakar Singh LLC By: /s/ Dinakar Singh ---------------------- Dinakar Singh Managing Member /s/ Dinakar Singh --------------------------- Dinakar Singh ------------------- ------------------- CUSIP NO. 913431102 13G Page 14 of 16 Pages ------------------- ------------------- LIST OF EXHIBITS TO SCHEDULE 13G Page ---- 1. Agreement to Make Joint Filing..................................... 15 ------------------- ------------------- CUSIP NO. 913431102 13G Page 15 of 16 Pages ------------------- ------------------- EXHIBIT 1 AGREEMENT TO MAKE JOINT FILING Each of the undersigned acknowledges and agrees that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13G shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. Dated: January 22, 2007 TPG-Axon GP, LLC By: /s/ Dinakar Singh ---------------------- Dinakar Singh Co-President TPG-Axon Partners GP, L.P. By: TPG-Axon GP, LLC, general partner By: /s/ Dinakar Singh ---------------------- Dinakar Singh Co-President TPG-Axon Partners, LP By: TPG-Axon Partners GP, L.P., general partner By: TPG-Axon GP, LLC, general partner By: /s/ Dinakar Singh ---------------------- Dinakar Singh Co-President ------------------- ------------------- CUSIP NO. 913431102 13G Page 16 of 16 Pages ------------------- ------------------- TPG-Axon Capital Management, L.P. By: TPG-Axon GP, LLC, general partner By: /s/ Dinakar Singh ---------------------- Dinakar Singh Co-President TPG-Axon Partners (Offshore), Ltd. By: /s/ Dinakar Singh ---------------------- Dinakar Singh Director Dinakar Singh LLC By: /s/ Dinakar Singh ---------------------- Dinakar Singh Managing Member /s/ Dinakar Singh --------------------------- Dinakar Singh