Notice to Members NTM2017-36

Date: July 6, 2017
Re: Audit Trail Migration
Effective Date: July 10, 2017

OneChicago, LLC (“OneChicago”) is issuing this Notice to Members (“NTM”) 2017-36 to inform market participants that effective Monday, July 10, 2017, OneChicago will complete the migration of customer audit trail reports to, which was initially described in NTM 2017-21. If firms have not yet migrated to receiving reports via SFTP at, please contacts Operations at as soon as possible to schedule that request.

At close of business Friday, July 7, 2017, the final audit trail reports will be sent to the legacy location on the OneChicago website. On Monday, July 10, 2017, access to legacy audit trail reports will be terminated. For more information regarding the original audit trail migration, please see the original notice, NTM 2017-21.

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If you have any questions, please contact OneChicago Operations at (312) 883-4311 or