13F-HR/A 1 a2212729z13f-hra.txt 13F-HR/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: September 30, 2012 ----------------------- Check Here if Amendment /X/; 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 February 14, 2013 ------------------------------- ----------------- ----------------- [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: 6 -------------------- Form 13F Information Table Value Total: $ 302,510 -------------------- (thousands) THIS FILING LISTS SECURITIES HOLDINGS REPORTED ON THE FORM 13F FILED ON NOVEMBER 14, 2012 PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT AND FOR WHICH THE CONFIDENTIAL TREATMENT EXPIRED ON FEBRUARY 14, 2013 OR ARE NO LONGER NECESSARY. List of Other Included Managers: NONE FORM 13F INFORMATION TABLE
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8 --------------------------------------------------------------------------------------------------------------------- NAME OF TITLE OF VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY ISSUER CLASS CUSIP [x$1000] PRN AMT PRN CALL DISCRETION MANAGERS SOLE SHARED NONE --------------------------------------------------------------------------------------------------------------------- * MEDICIS PHARMACEUTICAL CORP CL A NEW 584690309 16,239 375,300 SH 375,300 * SHAW GROUP INC COM 820280105 47,708 1,093,729 SH 1,093,729 * SHAW GROUP INC COM 820280105 4,362 100,000 SH CALL 100,000 * TEMPUR PEDIC INTL INC COM 88023U101 8,220 275,000 SH 275,000 * COOPER INDUSTRIES PLC SHS G24140108 211,849 2,822,397 SH 2,822,397 * GEOEYE INC COM 37250W108 14,132 534,700 SH 534,700