Cancellation of Carried Orders Between Trading Sessions

GTC and GTD orders persist within the Cboe Options Exchanges between business days. On BZX, EDGX, and C2 the latest time when GTC/GTD orders may be cancelled is 4:45 p.m. ET.

On C1 Options the latest time when GTC/GTD orders may be cancelled is 5:15 p.m. ET (15 minutes following the close of the latest Curb Session).

GTC, GTD, and Day orders for GTH products eligible to trade on holidays also persist between multiple GTH trading sessions on the same business day in connection with a holiday. On US holidays, Cancel Order messages for GTC orders may be issued until 11:45 a.m. ET, which is 15 minutes after the first GTH session ends. After the cancellation period, cancellation requests will be rejected with reason O: Order known, but cannot be canceled at this time until after the system restart completes and persisted orders are reloaded into the system. The Multi-Segment Holiday Day Order Handling port attribute will enable Members to designate if Day orders are cancelled or preserved across holiday trading segments comprising a single business date. See Port Attributes for information on available port attributes.