Cboe BYX Trading Hours#

Cboe BYX is one of Cboe Global Markets’ four U.S. equities exchanges, operating as a distinct electronic order book for trading NMS securities with its own unique fee schedule and market model. It is well known for utilizing Periodic Auctions during regular trading hours to help minimize market impact and provide liquidity

Trading Hours are divided into multiple sessions

Cboe BYX - Trading Hours#

Session Name

Time Zone

Start Time

End Time

PRE_MARKET

America/New_York

04:00

09:30

MARKET

America/New_York

09:30

16:00

POST_MARKET

America/New_York

16:00

20:00