November 08, 2019 10:09:01
Please be advised that due to a system issue, matching on the Cboe Options Exchange (C1) order book in Series ACNB - AMGN was unavailable between 10:02:56 and 10:05:37 ET.
All open quotes in the affected range during the outage were cancelled unless requested to be kept live based on port configuration. Matching in the affected range has been restored and all systems are now operating normally.
Cboe Trade Desk