Effective 12:56:17 ET Cboe Equities exchanges have halted trading due to a Level 1 Market Wide Circuit Breaker breach.  

During the entirety of the Halt period, new orders and cancels will be accepted on the BYX, EDGA, and EDGX exchanges for all symbols and on the BZX Exchange for non BZX-listed symbols.  Orders will entered a queued state and wait for the re-opening requirements.  BZX will reject new orders in BZX-listed symbols until 5 minute before the halt is scheduled to lift.  Orders placed prior to the halt may be cancelled depending on cancel on halt port settings.  The exchanges will be scheduled to re-open at approximately 13:11:17 ET.