0001104659-13-084398.txt : 20131114 0001104659-13-084398.hdr.sgml : 20131114 20131114061514 ACCESSION NUMBER: 0001104659-13-084398 CONFORMED SUBMISSION TYPE: 13F-HR/A PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20130331 FILED AS OF DATE: 20131114 DATE AS OF CHANGE: 20131114 EFFECTIVENESS DATE: 20131114 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Magnetar Financial LLC CENTRAL INDEX KEY: 0001352851 IRS NUMBER: 043818748 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR/A SEC ACT: 1934 Act SEC FILE NUMBER: 028-11800 FILM NUMBER: 131216665 BUSINESS ADDRESS: STREET 1: 1603 ORRINGTON AVE. STREET 2: 13TH FLOOR CITY: EVANSTON STATE: IL ZIP: 60201 BUSINESS PHONE: (847)905-4400 MAIL ADDRESS: STREET 1: 1603 ORRINGTON AVE. STREET 2: 13TH FLOOR CITY: EVANSTON STATE: IL ZIP: 60201 13F-HR/A 1 primary_doc.xml 13F-HR/A LIVE 0001352851 XXXXXXXX 03-31-2013 03-31-2013 true 2 NEW HOLDINGS true 11-14-2013 11-14-2013 Confidential Treatment Expired Magnetar Financial LLC

1603 ORRINGTON AVE. 13TH FLOOR EVANSTON IL 60201

13F HOLDINGS REPORT 028-11800 Y THIS FILING LISTS SECURITIES HOLDINGS REPORTED ON THE FORM 13F FILED ON MAY 15, 2013 PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT AND FOR WHICH THE CONFIDENTIAL TREATMENT EXPIRED ON NOVEMBER 14, 2013 OR THE REQUEST FOR CONFIDENTIAL TREATMENT IS NO LONGER NECESSARY. MICHAEL TURRO 847-905-4690 MICHAEL TURRO EVANSTON IL 11-14-2013 0 11 214939 false INFORMATION TABLE 2 a13-24196_2informationtable.xml INFORMATION TABLE * AMERISTAR CASINOS INC COM 03070Q101 1569 59807 SH SOLE 59807 0 0 * ARBITRON INC COM 03875Q108 14779 315328 SH SOLE 315328 0 0 * NYSE EURONEXT COM 629491101 21061 545051 SH SOLE 545051 0 0 * DELL INC COM 24702R101 79061 5517200 SH Call SOLE 5517200 0 0 * DELL INC COM 24702R101 14330 1000000 SH Put SOLE 1000000 0 0 * WMS INDS INC COM 929297109 13028 516760 SH SOLE 516760 0 0 * OFFICE DEPOT INC COM 676220106 16114 4100326 SH SOLE 4100326 0 0 * BMC SOFTWARE INC COM 055921100 1189 25655 SH SOLE 25655 0 0 * ELAN PLC ADR 284131208 18408 1560002 SH SOLE 1560002 0 0 * ELAN PLC ADR 284131208 17700 1500000 SH Call SOLE 1500000 0 0 * ELAN PLC ADR 284131208 17700 1500000 SH Put SOLE 1500000 0 0