Notice to Members 2017-50

Date: October 25, 2017
Re: Maintenance to UAT
Effective Date: October 26, 2017

OneChicago, LLC (“OneChicago”) is issuing this Notice to Members (“NTM”) 2017-50 to inform market participants that OneChicago will be performing updates and routine maintenance on our user acceptance testing (“UAT”) environment on Thursday, October 26, 2017 from 1500 CT to 1600 CT.  UAT services at this environment will be temporarily unavailable during this time and will resume at 1600 CT.


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