What is an attached order

An attached order (also known as "child order") refers to an order attached to the original order (also known as "parent order") and is used for closing positions. The attached order will be submitted only after a specified trigger price is met and the parent order is fully filled, achieving the purpose of closing positions.

A parent order is either a sell short order or buy order. A sell short order will be declined if you have positions to sell, and a buy order will be declined if you have positions to buy back.

Cancel, edit or partially filled

● If you modify the quantity of a parent order before the parent order is fully filled, the quantity of the attached order will be automatically modified to the same amount.

● If the parent order is not fully filled before the order expires, the attached order will be cancelled automatically upon the expiry of the parent order.

● All attached orders will be cancelled automatically after the parent order is cancelled.

● All attached orders will be deleted automatically after the parent order is deleted.

Time-in-force

The time-in-force for an attached order can be Day or GTC. When the parent order is fully filled, the time-in-force for the attached order will take effect.

How to set an attached order

You may select None, Profit Taker, Stop Loss, or Bracket in the drop down box. No orders will be attached by default.

Attached Order	Description
Profit Taker Order	A profit taker order is an opposite side limit order attached to the parent order and has the same symbol and quantity as those of the parent order. The profit taker limit price is used to close a profitable position. A profit taker order will be submitted only after the specified profit taker limit price is met and the parent order is fully filled. Whether an attached profit taker order supports pre-market and post-market trading is decided by the parent order.
Profit Taker Limit Price	The profit taker limit price is the trigger price of a profit taker order. When the parent order is fully filled and the market price meets the specified profit taker limit price, a limit order at the specified price will enter the market automatically.
Stop Loss Order	A stop loss order is a type of stop order used to limit the loss. It is an opposite side order attached to the parent order and has the same symbol and quantity as those of the parent order. Stop loss orders will be triggered only in the regular trading hours and submitted after the specified stop loss stop price is met and the parent order is fully filled. A stop loss order will be triggered only during the regular trading hours (excluding pre-market and post-market sessions).
Stop Loss Stop Price	The stop loss stop price is the trigger price of a stop loss order. When the parent order is fully filled, a stop order will be submitted automatically. When the market price meets the specified stop loss stop price, a stop loss order will be triggered and enter the market.
Bracket Order	A bracket order is comprised of a profit taker order and a stop loss order. Once the parent order fills, either a profit taker or stop loss order will be triggered depending on which order meets the trigger price first. When one order fills, the other is cancelled automatically. When one side of a bracket order is cancelled or declined, the other will be processed in the same way.

Notes:

● The risk assessment of an attached order will be conducted only after the parent order is fully filled and the trigger price of the attached order is met. If either child order in a bracket does not pass the risk assessment, the execution of both child orders will fail.

● After the parent order is fully filled, the resulting positions will not be frozen. If you execute any other trade that leads to a change of positions, the triggered attached order may fail the risk assessment.

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