Notice to Members 2017-53

Date: November 16, 2017
Re: Thanksgiving Holiday Trading Hours

OneChicago, LLC (“OneChicago”) is issuing this Notice to Members (“NTM”) 2017-53 to inform market participants that in observance of the upcoming Thanksgiving holiday, OneChicago will follow the schedule below, which is consistent with U.S. equity markets.

Date Hours
Thursday, November 23, 2017 Closed
Friday, November 24, 2017 Early close at 1200 CT for SSFs
Calendar SSF spreads open until 1300 CT
Block reporting/trading open until 1300 CT
EFP reporting open until 1300 CT


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For questions regarding this notice please contact OneChicago Operations at 1.312.883.3411 or via email at