0001104659-18-068284.txt : 20181114 0001104659-18-068284.hdr.sgml : 20181114 20181114090211 ACCESSION NUMBER: 0001104659-18-068284 CONFORMED SUBMISSION TYPE: 13F-HR/A PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20180331 FILED AS OF DATE: 20181114 DATE AS OF CHANGE: 20181114 EFFECTIVENESS DATE: 20181114 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: 181180612 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 03-31-2018 03-31-2018 true 2 NEW HOLDINGS true 11-14-2018 05-15-2018 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, 2018 PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT AND FOR WHICH THE CONFIDENTIAL TREATMENT EXPIRED ON NOVEMBER 14, 2018 OR IS NO LONGER NECESSARY. MICHAEL TURRO 847-905-4690 MICHAEL TURRO EVANSTON IL 11-14-2018 0 3 838934 false INFORMATION TABLE 2 a18-40108_4informationtable.xml INFORMATION TABLE ROCKWELL COLLINS INC COM 774341101 317287 2352891 SH SOLE 2352891 0 0 AETNA INC NEW COM 00817Y108 275083 1627709 SH SOLE 1627709 0 0 EXPRESS SCRIPTS HLDG CO COM 30219G108 246564 3569260 SH SOLE 3569260 0 0