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One-Cancels-All (OCA) Order

Trading Term

A group of orders linked by a client-created title for each order. By default, once an order in the group fills, all other linked orders are canceled. If an order is partially filled, the remaining orders will be reduced proportionately to the remaining quantity of the unfilled order. If an order is canceled by the client before execution, all remaining orders in the OCA group will automatically be canceled, but if one of the orders is rejected or canceled by the system, the remaining order(s) WILL NOT automatically be canceled. For more information, see the One-Cancels-All Orders page.

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