Please be advised that due to a system issue, matching on the Cboe Options ("C1") Exchange order book in SPX was unavailable between 14:03:34 ET and 14:04:42 ET.

All open quotes in the affected range during the outage were cancelled.  Open orders would have also been 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
[email protected]