Large Trader Reporting

On November 2, 2015, all reporting firms will be required to submit their large trader reporting directly to OneChicago, and not to SIAC. OneChicago will take over lease fill out the document below with the applicable information from your firm and follow the guidelines included in the document when submitting your required records.
Onboarding Document PDF

Rule Amendments
OCX NOTICE TO MEMBERS – 2010-12
Effective Date: August 27, 2010
Updated Large Trader Reporting
(Note 2010-12 supersedes 2010-03)
View PDF

OCX NOTICE TO MEMBERS
Effective Date: April 19, 2010 – 2010-03
Updated Large Trader Reporting Procedures
(Note this has been superseded by 2010-12)
View PDF

ISG Large Trader Position Reporting (LOPR File Layout) Attachment 1

ISG Large Trader Position Reporting (CFTC Style) Attachment 2

CFTC Form 102 Attachment 3





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