UNITED STATES
SECURITIES EXCHANGE COMMISSION
Washington, D.C. 20549
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SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. )
UNIVERSAL COMPRESSION HOLDINGS, INC.
------------------------------------
(Name of Issuer)
Common Stock, par value $.01 per share
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(Title of Class of Securities)
913431102
---------------------------
(CUSIP Number)
December 31, 2006
---------------------------
(Date of Event which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:
|X| Rule 13d-1(b)
|_| 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 the disclosures provided in a prior cover page.
The information required in 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).
Continued on following pages
Page 1 of 11 Pages
Exhibit Index: Page 10
SCHEDULE 13G
CUSIP No.: 913431102 Page 2 of 11 Pages
................................................................................
1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
MAGNETAR FINANCIAL 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 2,329,275
Number of ................................................................
Shares
Beneficially
Owned by Each
Reporting
Person With
6. Shared Voting Power None
................................................................
7. Sole Dispositive Power 2,329,275
................................................................
8. Shared Dispositive Power None
................................................................................
9. Aggregate Amount Beneficially Owned by Each Reporting Person
2,329,275
................................................................................
10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
Instructions)
[ ]
................................................................................
11. Percent of Class Represented by Amount in Row (9)
7.66% based on 30,413,014 shares outstanding as of November 2, 2006.
................................................................................
12. Type of Reporting Person:
IA; OO
SCHEDULE 13G
CUSIP No.: 913431102 Page 3 of 11 Pages
................................................................................
1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
MAGNETAR CAPITAL PARTNERS 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 None
Number of ................................................................
Shares 6. Shared Voting Power 2,329,275
Beneficially ................................................................
Owned by Each 7. Sole Dispositive Power None
Reporting ................................................................
Person With 8. Shared Dispositive Power 2,329,275
................................................................................
9. Aggregate Amount Beneficially Owned by Each Reporting Person
2,329,275
................................................................................
10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
Instructions)
[ ]
................................................................................
11. Percent of Class Represented by Amount in Row (9)
7.66% based on 30,413,014 shares outstanding as of November 2, 2006.
................................................................................
12. Type of Reporting Person:
HC; OO
SCHEDULE 13G
CUSIP No.: 913431102 Page 4 of 11 Pages
................................................................................
1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
SUPERNOVA MANAGEMENT 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 None
Number of ................................................................
Shares 6. Shared Voting Power 2,329,275
Beneficially ................................................................
Owned by Each 7. Sole Dispositive Power None
Reporting ................................................................
Person With 8. Shared Dispositive Power 2,329,275
................................................................................
9. Aggregate Amount Beneficially Owned by Each Reporting Person
2,329,275
................................................................................
10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
Instructions)
[ ]
................................................................................
11. Percent of Class Represented by Amount in Row (9)
7.66% based on 30,413,014 shares outstanding as of November 2, 2006.
................................................................................
12. Type of Reporting Person:
HC; OO
SCHEDULE 13G
CUSIP No.: 913431102 Page 5 of 11 Pages
................................................................................
1. Names of Reporting Persons.
I.R.S. Identification Nos. of above persons (entities only).
ALEC N. LITOWITZ
................................................................................
2. Check the Appropriate Box if a Member of a Group
(a) [ ]
(b) [ ]
................................................................................
3. SEC Use Only
................................................................................
4. Citizenship or Place of Organization
United States of America
................................................................................
5. Sole Voting Power None
Number of ................................................................
Shares 6. Shared Voting Power 2,329,275
Beneficially ................................................................
Owned by Each 7. Sole Dispositive Power None
Reporting ................................................................
Person With 8. Shared Dispositive Power 2,329,275
................................................................................
9. Aggregate Amount Beneficially Owned by Each Reporting Person
2,329,275
................................................................................
10. Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See
Instructions)
[ ]
................................................................................
11. Percent of Class Represented by Amount in Row (9)
7.66% based on 30,413,014 shares outstanding as of November 2, 2006.
................................................................................
12. Type of Reporting Person:
HC
Page 6 of 11 Pages
Item 1(a) Name of Issuer:
Universal Compression Holdings, Inc. (the "Issuer")
Item 1(b). Address of Issuer's Principal Executive Offices:
4444 Brittmoore Road
Houston, TX 77041
Item 2(a) Name of Person Filing:
This Statement is filed on behalf of each of the following
persons (collectively, the "Reporting Persons"):
i) Magnetar Financial LLC ("Magnetar Financial");
ii) Magnetar Capital Partners LP ("Magnetar Capital
Partners");
iii) Supernova Management LLC ("Supernova Management"); and
iv) Alec N. Litowitz ("Mr. Litowitz").
This Statement relates to Shares (as defined herein) held for
the accounts of Magnetar Capital Master Fund, Ltd, a Cayman Islands exempted
company ("Magnetar Capital Master Fund"). Magnetar Capital Partners serves
as the sole member and parent holding company of Magnetar Financial. Magnetar
Financial is a registered investment adviser under Section 203 of the
Investment Advisers Act of 1940, as amended. Magnetar Financial serves as
investment adviser to Magnetar Capital Master Fund. In such capacity, Magnetar
Financial exercises voting and investment power over the Shares held for the
account of Magnetar Capital Master Fund. Supernova Management is the general
partner of Magnetar Capital Partners. The manager of Supernova Management is
Mr. Litowitz.
Item 2(b) Address of Principal Business Office or, if None, Residence:
The address of the principal business office of each of
Magnetar Financial, Magnetar Capital Partners, Supernova Management, and Mr.
Litowitz is 1603 Orrington Avenue, 13th Floor, Evanston, Illinois 60201.
Item 2(c) Citizenship:
i) Magnetar Financial is a Delaware limited liability
company;
ii) Magnetar Capital Partners is a Delaware limited
partnership;
iii) Supernova Management is a Delaware limited liability
company; and
iv) Mr. Litowitz is a citizen of the United States of
America.
Item 2(d) Title of Class of Securities:
Page 7 of 11 Pages
Common Stock, par value $.01 per share (the "Shares")
Item 2(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
Exchange Act.
(b) [ ] Bank as defined in Section 3(a)(6) of the Exchange
Act.
(c) [ ] Insurance company as defined in Section 3(a)(19) of
the Exchange Act.
(d) [ ] Investment company registered under Section 8 of the
Investment Company Act.
(e) [X] An investment adviser in accordance with Rule
13d-1(b)(1)(ii)(E);
(f) [ ] An employee benefit plan or endowment fund in
accordance with Rule 13d-1(b)(1)(ii)(F).
(g) [ ] A parent holding company or control person in
accordance with Rule 13d-1(b)(1)(ii)(G).
(h) [ ] A savings association as defined in Section 3(b) of
the Federal Deposit Insurance Act.
(i) [ ] A church plan that is excluded from the definition
of an investment company under Section 3(c)(14) of
the Investment Company Act.
Item 4. Ownership:
Item 4(a) Amount Beneficially Owned:
As of February 5, 2007, each of Magnetar Financial,
Magnetar Capital Partners, Supernova Management and Mr. Litowitz may be deemed
to be the beneficial owner of 2,329,275 Shares. This amount consists of: (A)
2,329,275 Shares held for the account of Magnetar Capital Master Fund.
Item 4(b) Percent of Class:
The number of Shares of which each of Magnetar Financial,
Magnetar Capital Partners, Supernova Management and Mr. Litowitz may be deemed
to be the beneficial owner constitutes approximately 7.66% of the total number
of Shares outstanding (based upon information provided by the Issuer in its
most recently filed registration statement on Form 10-Q, there were
approximately 30,413,014 shares outstanding as of November 2, 2006).
Item 4(c) Number of Shares of which such person has:
Page 8 of 11 Pages
Magnetar Financial:
-------------------
(i) Sole power to vote or direct the vote: 2,329,275
(ii) Shared power to vote or direct the vote: 0
(iii) Sole power to dispose or direct the 2,329,275
disposition of:
(iv) Shared power to dispose or direct the 0
disposition of:
Magnetar Capital Partners, Supernova Management, and Mr. Litowitz:
------------------------------------------------------------------
(i) Sole power to vote or direct the vote: 0
(ii) Shared power to vote or direct the vote: 2,329,275
(iii) Sole power to dispose or direct the 0
disposition of:
(iv) Shared power to dispose or direct the 2,329,275
disposition of:
Item 5. Ownership of Five Percent or Less of a Class:
This Item 5 is not applicable.
Item 6. Ownership of More than Five Percent on Behalf of Another
Person:
This Item 6 is not applicable.
Item 7. Identification and Classification of the Subsidiary Which
Acquired the Security Being Reported on By the Parent Holding
Company:
See disclosure in Item 2 hereof.
Item 8. Identification and Classification of Members of the Group:
This Item 8 is not applicable.
Item 9. Notice of Dissolution of Group:
This Item 9 is not applicable.
Item 10. Certification:
By signing below each of the Reporting Persons certifies
that, to the best of their 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.
Page 9 of 11 Pages
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, the
undersigned certify that the information set forth in this statement is true,
complete and correct.
Date: February 14, 2007 MAGNETAR FINANCIAL LLC
By: Magnetar Capital Partners LP
As Sole Member
By: /s/ Alec N. Litowitz
-----------------------------
Name: Alec N. Litowitz
Title: Manager of Supernova Management
LLC, as General Partner of
Magnetar Capital Partners LP
Date: February 14, 2007 MAGNETAR CAPITAL PARTNERS LP
By: /s/ Alec N. Litowitz
-----------------------------
Name: Alec N. Litowitz
Title: Manager of Supernova Management
LLC, as General Partner of
Magnetar Capital Partners LP
Date: February 14, 2007 SUPERNOVA MANAGEMENT LLC
By: /s/ Alec N. Litowitz
------------------------------
Name: Alec N. Litowitz
Title: Manager
Date: February 14, 2007 ALEC N. LITOWITZ
/s/ Alec N. Litowitz
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Page 10 of 11 Pages
EXHIBIT INDEX
Ex. Page No.
A. Joint Filing Agreement, dated February 14, 2007 by and among
Magnetar Financial LLC, Magnetar Capital Partners LP,
Supernova Management LLC, and Alec N. Litowitz ........................11
Page 11 of 11 Pages
EXHIBIT A
JOINT FILING AGREEMENT
The undersigned hereby agree that the statement on Schedule 13G with
respect to the Common Stock of Universal Compresion Holdings, Inc. dated as of
February 14, 2007 is, and any amendments thereto (including amendments on
Schedule 13D) signed by each of the undersigned shall be, filed on behalf of
each of us pursuant to and in accordance with the provisions of Rule 13d-1(k)
under the Securities Exchange Act of 1934, as amended.
Date: February 14, 2007 MAGNETAR FINANCIAL LLC
By: Magnetar Capital Partners LP
As Sole Member
By: /s/ Alec N. Litowitz
-----------------------------
Name: Alec N. Litowitz
Title: Manager of Supernova Management
LLC, as General Partner of
Magnetar Capital Partners LP
Date: February 14, 2007 MAGNETAR CAPITAL PARTNERS LP
By: /s/ Alec N. Litowitz
-----------------------------
Name: Alec N. Litowitz
Title: Manager of Supernova Management
LLC, as General Partner of
Magnetar Capital Partners LP
Date: February 14, 2007 SUPERNOVA MANAGEMENT LLC
By: /s/ Alec N. Litowitz
------------------------------
Name: Alec N. Litowitz
Title: Manager
Date: February 14, 2007 ALEC N. LITOWITZ
/s/ Alec N. Litowitz
------------------------------