Hours of Operation

Refer to Holidays & Hours for Cboe trading hours and holiday schedules. All times are listed in the Eastern Time zone (ET).

All orders are live upon acceptance by the Cboe Options Exchanges. Orders are rejected if they are received outside the sessions as defined in the Hours Of Operation table.

The Cboe Options Exchanges support a Pre-Market Queuing Session that allows orders to be entered and queued prior to the start of the Global Trading Hours (GTH) session and the Regular Trading Hours (RTH) session. The GTH Queuing session will allow GTH-eligible Product orders marked as both GTH and RTH only order to be entered and queued. C1 also supports a Curb session in addition to GTH and RTH sessions.

For more information on the Cboe Opening Process, please refer to the Cboe Titanium U.S. Options Opening Process specification.

The Cboe Options Exchanges do not support a closing auction, but do support Extended Trading for select products. All orders remaining after the Regular Trading Session that are not eligible for Extended Trading will be cancelled automatically. All orders remaining after the Extended session will be cancelled automatically and execution reports will be delivered.