Hours of Operation

All times noted are Eastern Time zone (ET) based.

Refer to the website for the Cboe Holiday schedule.

Cboe BZX Equities Exchange (BZX) supports an opening and closing auction for BZX listed securities (refer to the Cboe Titanium U.S. Equities Auction Process Specification for more information).

Orders entered prior to the start of the Regular Trading Session which are accepted will be queued for trading in the session designated by the order. Once trading begins, queued orders will be released to the respective book and crossing orders will be matched by time priority. Refer to the Cboe Titanium U.S. Equities Opening Process Specification for more information.

Orders are rejected if they are received outside the hours Cboe is available for trading or queuing. All orders remaining after the Post Market Session will be cancelled automatically (Execution Reports will be delivered).

Product and session trading hours can be found on the Cboe website.