Notice to Members 2018-31

DATE August 14, 2018
RE Maintenance to UAT
OneChicago, LLC (“OneChicago”) is issuing this Notice to Members (“NTM”) 2018-31 to inform market participants that OneChicago will be performing updates and routine maintenance on our user acceptance testing (“UAT”) environment on Wednesday, August 15, 2018 from 1600 CT to 1800 CT.  UAT services at this environment will be temporarily unavailable during this time and will resume at 1800 CT.