September 23, 2019 11:06:28
Please be advised that Cboe has resolved all systems issues with the Cboe C2 Options platform.
At 10:37:16, Cboe observed a disconnection of matching unit 10, symbol range ETFC-FIVDZ, from all customer order handlers. Order handlers connected back to the matching unit at 10:38:48 am ET.
In order to ensure system stability, at 10:48:42 am ET Cboe staff initiated a graceful failover of the entire matching engine host processing symbol range CXSB to HSXZ. This failover successfully completed at 10:49:43am ET.
All Cboe systems are operating normally.