Self-Imposed Lockouts

TPHs can activate Self-Imposed Lockouts when issuing Mass Cancel or Purge Orders operations on FIX/BOE sessions. The following summarizes Mass Cancel and Purge Orders operations:

Mass Cancel - The FIX message (Order Cancel Request message) and the BOE message (Cancel Order message) are used to request the cancellation of a single order by client or system-provided order ID. These order cancel operations can be extended to a Mass Cancel operation by including the optional MassCancelInst (Mass Cancel Instructions) field. Only orders or quotes on the FIX/BOE session over which the mass cancel request is issued are cancelled.

Purge Orders - The FIX message (Purge Request message) and the BOE message (Purge Orders message) both require the MassCancelInst field to specify a mass cancel operation that applies to orders and quotes across all FIX/BOE sessions.

In both Mass Cancel and Purge Orders operations, the MassCancelInst field provides the ability to specify a Lockout at an EFID level and Product level (EFID + Product combination). In addition, Purge Orders include the ability to cancel and lockout at a Custom Group ID (EFID + Custom Group Id combination). The cancellation and lockout is able to be applied to either options, futures, or both. When a Lockout is specified, subsequent orders/quotes are rejected across all FIX/BOE sessions corresponding to the EFID, Product, Product Type or Custom Group Id level lockout criteria until the Lockout condition is reset (see Protocol Level Risk Reset).

Cboe Titanium Cboe Futures Exchange Risk Management Specification - Self-Imposed Lockouts | Cboe