Notice to Members 2017-55

Date: December 18, 2017
Re: Holiday Trading Hours

OneChicago, LLC (“OneChicago”) is issuing this Notice to Members (“NTM”) 2017-55 to inform market participants that in observance of the upcoming Christmas and New Year’s Day holidays, OneChicago will follow the schedule below, which is consistent with U.S. equity markets.

Date Hours
Monday, December 25, 2017 Closed
Monday, January 1, 2018 Closed


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