0000950123-19-002205.txt : 20190214 0000950123-19-002205.hdr.sgml : 20190214 20190214160149 ACCESSION NUMBER: 0000950123-19-002205 CONFORMED SUBMISSION TYPE: 13F-HR/A PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20180331 FILED AS OF DATE: 20190214 DATE AS OF CHANGE: 20190214 EFFECTIVENESS DATE: 20190214 FILER: COMPANY DATA: COMPANY CONFORMED NAME: CITADEL ADVISORS LLC CENTRAL INDEX KEY: 0001423053 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 13F-HR/A SEC ACT: 1934 Act SEC FILE NUMBER: 028-13183 FILM NUMBER: 19605878 BUSINESS ADDRESS: STREET 1: 131 S. DEARBORN ST., 32ND FLOOR CITY: CHICAGO STATE: IL ZIP: 60603 BUSINESS PHONE: 312-395-2100 MAIL ADDRESS: STREET 1: 131 S. DEARBORN ST., 32ND FLOOR CITY: CHICAGO STATE: IL ZIP: 60603 13F-HR/A 1 primary_doc.xml 13F-HR/A LIVE false true false 0001423053 XXXXXXXX 03-31-2018 03-31-2018 true 4 NEW HOLDINGS true 02-14-2019 05-11-2018 Confidential Treatment Expired CITADEL ADVISORS LLC

131 S. DEARBORN ST., 32ND FLOOR Chicago IL 60603

13F COMBINATION REPORT 028-13183 Ashler Capital LLC Y THIS FILING LISTS SECURITIES HOLDINGS REPORTED ON THE FORM 13F FILED ON May 11, 2018, PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT THAT EXPIRED ON FEBRUARY 14, 2019. Patricia A. Stasny 312-395-4366 Patricia A. Stasny Chicago IL 02-14-2019 0 2 344457 false INFORMATION TABLE 2 form13fInfoTable.xml INFORMATION TABLE FOR FORM 13F AETNA INC NEW Cmn 00817Y108 228546 1352343 SH DFND 1352343 0 0 EXPRESS SCRIPTS HLDG CO Cmn 30219G108 115911 1677927 SH DFND 1677927 0 0