13F-HR/A 1 efc7-2564_13fhra.txt THIS FILING LISTS SECURITIES HOLDINGS REPORTED ON THE FORM 13F FILED ON AUGUST 14, 2007 PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT AND FOR WHICH SUCH CONFIDENTIAL TREATMENT EXPIRED ON NOVEMBER 14, 2007 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: June 30, 2007 ------------------ Check here if Amendment [ ]; Amendment Number: 1 --------------- This Amendment (Check only one.): [ ] is a restatement. [X ] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: Magnetar Financial LLC Address: 1603 Orrington Avenue 13th Floor Evanston, IL 60201 Form 13F File Number: 28-11800 -------- The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: Michael Turro Title: Chief Compliance Officer Phone: (847) 905-4690 Signature, Place, and Date of Signing: /s/ Michael Turro Evanston, IL November 14, 2007 ---------------------------- ------------------------- ----------------- [Signature] [City, State] [Date] Report Type (Check only one.): |X| 13F HOLDINGS REPORT. (Check here if all holdings of this reporting manager are reported in this report.) |_| 13F NOTICE. (Check here if no holdings reported are in this report, and all holdings are reported by other reporting manager(s).) |_| 13F COMBINATION REPORT. (Check here if a portion of the holdings for this reporting manager are reported in this report and a portion are reported by other reporting manager(s).) FORM 13F SUMMARY PAGE Report Summary: Number of Other Included Managers: 0 ------------------------------ Form 13F Information Table Entry Total: 18 ------------------------------ Form 13F Information Table Value Total: $1,838,295 ------------------------------ (thousands) List of Other Included Managers: Provide a numbered list of name(s) and Form 13F file number(s) of all institutional investment managers with respect to which this report is filed, other than the manager filing this report. [If there are no entries in this list, state "NONE" and omit the column headings and list entries.] None
MAGNETAR INVESTMENT MANAGEMENT, LLC FORM 13F Quarter Ended June 30, 2007 ----------------------------------------------------------------------------------------------------------------------------------- CLASS VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY ----- ------ -------- --- ---- ---------- ------ ------------------- NAME OF ISSUER TITLE CUSIP (X$1,000) PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE -------------- ----- ----- --------- ------- --- ---- ---------- -------- ---- ------ ---- ----------------------------------------------------------------------------------------------------------------------------------- ALCAN INC COM 013716105 $43,309 532,700 SH SOLE 532,700 ----------------------------------------------------------------------------------------------------------------------------------- ALCAN INC COM 013716105 $48,780 600,000 SH PUT SOLE 600,000 ----------------------------------------------------------------------------------------------------------------------------------- ALLTEL CORP COM 020039103 $196,736 2,912,450 SH SOLE 2,912,450 ----------------------------------------------------------------------------------------------------------------------------------- ARCHSTONE SMITH TR COM 039583109 $171,415 2,899,936 SH SOLE 2,899,936 ----------------------------------------------------------------------------------------------------------------------------------- AVAYA INC COM 053499109 $42,107 2,500,400 SH SOLE 2,500,400 ----------------------------------------------------------------------------------------------------------------------------------- C D W CORP COM 12512N105 $195,584 2,301,800 SH SOLE 2,301,800 ----------------------------------------------------------------------------------------------------------------------------------- CLEAR CHANNEL COMMUNICATIONS COM 184502102 $27,559 728,700 SH SOLE 728,700 ----------------------------------------------------------------------------------------------------------------------------------- FIRST DATA CORP COM 319963104 $163,350 5,000,000 SH SOLE 5,000,000 ----------------------------------------------------------------------------------------------------------------------------------- FIRST DATA CORP COM 319963104 $228,690 7,000,000 SH CALL SOLE 7,000,000 ----------------------------------------------------------------------------------------------------------------------------------- GREATER BAY BANCORP COM 391648102 $20,880 750,000 SH SOLE 750,000 ----------------------------------------------------------------------------------------------------------------------------------- INTL SECS EXCHANGE HLDGS INC CL A 46031W204 $105,161 1,609,203 SH SOLE 1,609,203 ----------------------------------------------------------------------------------------------------------------------------------- NUVEEN INVTS INC CL A 67090F106 $75,531 1,215,300 SH SOLE 1,215,300 ----------------------------------------------------------------------------------------------------------------------------------- OPTION CARE INC COM 683948103 $10,445 678,247 SH SOLE 678,247 ----------------------------------------------------------------------------------------------------------------------------------- PAYLESS SHOESOURCE INC COM 704379106 $7,310 231,691 SH SOLE 231,691 ----------------------------------------------------------------------------------------------------------------------------------- SLM CORP COM 78442P106 $347,042 6,027,135 SH SOLE 6,027,135 ----------------------------------------------------------------------------------------------------------------------------------- SOLECTRON CORP COM 834182107 $66,240 18,000,000 SH SOLE 18,000,000 ----------------------------------------------------------------------------------------------------------------------------------- STATION CASINOS INC COM 857689103 $2,274 26,200 SH CALL SOLE 26,200 ----------------------------------------------------------------------------------------------------------------------------------- TXU CORP COM 873168108 $85,882 1,276,100 SH SOLE 1,276,100 -----------------------------------------------------------------------------------------------------------------------------------