Notice to Members 2017-35

Date: June 28, 2017
Re: Maintenance to UAT
Effective Date: June 29, 2017 and June 30, 2017

OneChicago, LLC (“OneChicago”) is issuing this Notice to Members (“NTM”) 2017-35 to inform market participants that OneChicago will be performing updates and routine maintenance on our user acceptance testing (“UAT”) environment on June 29, 2017 and June 30, 2017. UAT services at this environment will be temporarily unavailable during this time and will return to normal hours on July 1, 2017.


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