Attached Orders
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What Is Attached Orders?
Attached orders are contingent orders that are linked to a parent order and automatically activate when the parent order fills, commonly used to simultaneously place profit targets and stop losses when entering a position.
Attached orders are contingent orders linked to a parent order that automatically activate when the parent order fills, enabling traders to define complete trading plans that execute automatically without manual intervention. When you enter a position, you can simultaneously specify your exit orders - stop loss and profit target - that spring to life only after your entry executes successfully. Think of attached orders as a complete trade plan submitted as a single package to your broker. Rather than entering a trade and then scrambling to place protective orders while the market moves, you define everything upfront: "Buy 100 shares at $50, and if that fills, immediately place a stop loss at $48 and a profit target at $55." The broker's order management system holds the attached orders until your entry executes, then submits them automatically to the market. This automation eliminates the risk of forgetting to place protective orders after entry, removes the dangerous delay between entry and protection that can result in unexpected losses, and enforces trading discipline by requiring traders to plan exits before entering positions. Professional traders consider attached orders essential for proper risk management, particularly when trading volatile securities or during fast-moving market conditions where manual order entry may be too slow.
Key Takeaways
- Attached orders automatically submit when the parent order fills, eliminating the need to manually place stops and targets after entry.
- Common configurations: bracket orders (stop loss + profit target attached to entry), OCO orders (one cancels other).
- The attached orders remain dormant until the parent executes, then become live working orders.
- If the parent order is cancelled or never fills, attached orders are also cancelled automatically.
- Essential for traders who want complete trade management planned before entry.
- Most brokers support attached orders through bracket order functionality or conditional order systems.
How Attached Orders Works
When you submit a parent order with attached orders, the system holds the attached orders in a dormant state within the order management system. They don't enter the market or consume buying power until the trigger condition is met - typically the parent order filling and establishing the position you intended to take. Once the parent order executes, the attached orders immediately become active working orders in the market. A bracket order, for example, places both a stop loss and a profit target simultaneously. These are often configured as OCO (one-cancels-other), meaning when either the stop loss or profit target fills, the other is automatically cancelled since you no longer have a position requiring protection. The attached orders inherit position information from the parent order. If your parent order only partially fills (say, 50 of 100 shares), sophisticated systems adjust the attached order quantities proportionally to match your actual position size. Less sophisticated systems may require manual adjustment to avoid over-selling or under-protecting your position. If the parent order is cancelled or expires without filling, the attached orders are also cancelled automatically. They never become live orders because the condition that would activate them - an open position requiring protection - was never met.
Common Attached Order Configurations
Typical attached order setups:
| Configuration | Description | Use Case |
|---|---|---|
| Bracket Order | Stop loss + profit target attached to entry | Complete trade management from entry |
| OCO Attached | Two exits where one cancels the other | Either stop or target exits the position |
| Trailing Stop Attached | Trailing stop activates on entry fill | Lock in gains as trade progresses |
| Stop Only Attached | Only stop loss attached to entry | Protection without predetermined target |
Important Considerations
Broker implementations vary significantly. Some brokers offer sophisticated attached order functionality with partial fill handling and complex conditionals. Others offer basic bracket orders only. Know your platform's capabilities before relying on attached orders. Paper trading or small position tests can reveal limitations before they cause problems with larger trades. Attached orders don't guarantee execution at attached prices. Your stop loss order is subject to the same execution risks as any stop order - gaps, fast markets, and liquidity can result in fills different from your specified prices. Consider using stop-limit orders as attachments when you need price guarantees, accepting the tradeoff of potentially not being filled at all. Partial fills create complexity. If you enter with attached orders for 100 shares but only 50 fill, what happens to your attached orders? Some systems adjust proportionally, others require manual intervention. Test your broker's handling before using in live trading. After-hours gaps can trigger attached stops at unexpected prices. If you hold overnight positions with attached stops and the market gaps against you at the open, your stop will execute at the open price, not your stop price. Traders holding positions through earnings announcements or other events should understand this gap risk. Order cancellation cascades through attached orders. If you cancel the parent order before it fills, all attached orders are also cancelled. This behavior is usually desirable but requires awareness when managing complex order sets.
Tips for Using Attached Orders
Always use attached orders for every trade. Making stop loss attachment automatic eliminates the possibility of forgetting protection and enforces disciplined risk management. Test your broker's attached order functionality with small trades before using at scale. Verify that partial fills, modifications, and cancellations work as expected. Consider using limit orders as attached profit targets rather than simple profit target orders. This ensures you capture the price you want rather than potentially better prices that might not execute. Review attached order status after entry fills. Confirm that your stops and targets are active and at correct prices before moving on to other activities. Use bracket orders with OCO configuration so you're never double-exited (accidentally selling twice) or left with residual orders after position close.
Real-World Example: Bracket Order with Attached Exits
Demonstrating attached orders through a complete bracket order trade setup.
FAQs
Behavior varies by broker. Some systems proportionally adjust attached orders to match the filled quantity. Others leave attached orders at original size, potentially creating mismatches. Check your broker's documentation and test with small orders before relying on this functionality.
Bracket orders are a type of attached order configuration where both a stop loss and profit target are attached to an entry order with OCO logic. "Attached orders" is the broader concept; bracket orders are a specific implementation for creating complete trade management packages.
Yes, once attached orders become active working orders, you can modify or cancel them like any other order. The "attached" relationship only governs activation timing - once live, they're regular orders subject to normal modification rules.
Most brokers support attached orders with market and limit parent orders. Some support attached orders with stop entries (stop-limit brackets). Complex parent orders like trailing stops may have limited attached order support. Check your broker's specific capabilities for your intended configuration.
The Bottom Line
Attached orders automate the placement of protective stops and profit targets when entries execute, ensuring traders have complete risk management from the moment they enter positions. This automation eliminates dangerous gaps between entry and protection and enforces disciplined trading by requiring exit planning before position entry. Common configurations: bracket orders attach both stop-loss and take-profit to entries; OCO (one-cancels-other) attachments ensure only one exit triggers; trailing stop attachments lock in profits as trades move favorably. Most brokerages support attached orders through their order entry interface - look for "bracket order" or "advanced order" options. For active traders, pre-configuring standard attachment templates (e.g., 2% stop, 4% target) speeds execution and enforces discipline. Verify your broker's partial fill handling and test attached order functionality with small positions before using at scale. The best practice is to make attached orders your default for every trade, eliminating the possibility of forgetting protection.
Related Terms
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At a Glance
Key Takeaways
- Attached orders automatically submit when the parent order fills, eliminating the need to manually place stops and targets after entry.
- Common configurations: bracket orders (stop loss + profit target attached to entry), OCO orders (one cancels other).
- The attached orders remain dormant until the parent executes, then become live working orders.
- If the parent order is cancelled or never fills, attached orders are also cancelled automatically.