When Kill Switch is activated, order entry is blocked and all working orders (DAY and GTC) are cancelled for either a selected subset or all of the firm’s SenderComp IDs. Once the Kill Switch has been activated, it will stay active until deactivated. Participants will receive all final order states when the Kill Switch is enabled and rejections for any new orders submitted. The Kill Switch will not cancel orders during pre-open no cancel and halted market states.