Advanced Orders

The following guide should be read in conjunction with the specific documentation from the broker or exchange involving these order types, lists/groups and execution instructions (such as for Interactive Brokers).

Order Lists

Combinations of contingent orders, or larger order bulks can be grouped together into a list with a common order_list_id. The orders contained in this list may or may not have a contingent relationship with each other, as this is specific to how the orders themselves are constructed, and the specific exchange they are being routed to.

Contingency Types

• OTO are parent orders with 'one-triggers-other' child orders.
• OCO are linked orders with linked_order_ids which are contingent on the other(s) (one-cancels-other when triggered).
• OUO are linked orders with linked_order_ids which are contingent on the other(s) (one-updates-other when triggered or modified).

info

These contingency types relate to ContingencyType FIX tag <1385> https://www.onixs.biz/fix-dictionary/5.0.sp2/tagnum_1385.html.

One Triggers the Other (OTO)

An OTO orders involves two orders—a parent order and a child order. The parent order is a live marketplace order. The child order, held in a separate order file, is not. If the parent order executes in full, the child order is released to the marketplace and becomes live. An OTO order can be made up of stock orders, option orders, or a combination of both.

One Cancels the Other (OCO)

An OCO order is an order whose execution results in the immediate cancellation of another order linked to it. Cancellation of the Contingent Order happens on a best efforts basis. In an OCO order, both orders are live in the marketplace at the same time. The execution of either order triggers an attempt to cancel the other unexecuted order. Partial executions will also trigger an attempt to cancel the other order.

One Updates the Other (OUO)

An OUO order is an order whose execution results in the immediate reduction of quantity in another order linked to it. The quantity reduction happens on a best effort basis. In an OUO order both orders are live in the marketplace at the same time. The execution of either order triggers an attempt to reduce the remaining quantity of the other order, partial executions included.

Bracket Orders

Bracket orders are an advanced order type that allows traders to set both take-profit and stop-loss levels for a position simultaneously. This involves placing a parent order (entry order) and two child orders: a take-profit LIMIT order and a stop-loss STOP_MARKET order. When the parent order is executed, the child orders are placed in the market. The take-profit order closes the position with profits if the market moves favorably, while the stop-loss order limits losses if the market moves unfavorably.

Bracket orders can be easily created using the OrderFactory, which supports various order types, parameters, and instructions.

warning

You should be aware of the margin requirements of positions, as bracketing a position will consume more order margin.