Notice to Members 2018-21

Date: May 10, 2018
Re: Maintenance to UAT
Effective Date: May 15, 2018

OneChicago, LLC (“OneChicago”) is issuing this Notice to Members (“NTM”) 2018-21 to inform market participants that OneChicago will be performing updates and routine maintenance on our user acceptance testing (“UAT”) environment on Tuesday, May 15, 2018 from 0900 CT to 1800 CT.  UAT services at this environment will be temporarily unavailable during this time and will resume at 1800 CT.

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