13F-HR/A LIVE false true false 0001423053 XXXXXXXX 03-31-2016 03-31-2016 true 1 RESTATEMENT CITADEL ADVISORS LLC

C/O CITADEL LLC 131 S. DEARBORN ST., 32ND FLOOR Chicago IL 60603

13F HOLDINGS REPORT 028-13183 Y The purpose of this amendment is to delete the indication that there were holdings omitted on the basis of confidentiality. There were no omitted holdings and this amendment makes no changes to the data table. Patricia A. Stasny 312-395-4366 Patricia A. Stasny Chicago IL 01-31-2017 3 8393 79253183 false 1 28-15591 CALC III LP 2 28-15515 Citadel Advisors II LLC 3 28-13182 CALC IV LP