Trading Session Rules for Conditional Orders (US NMS Stocks, Equities, ETFs, etc.)

1. How Sessions Affect Conditional Orders

When you place a conditional order, the system tracks market prices based on your session settings. The key option is "Allow Fill Outside RTH" (RTH = Regular Trading Hours).

• "Fill Outside RTH" ON: The order’s trigger condition is monitored during all active sessions—Overnight, Pre-Market, RTH, and Post-Market.
• "Fill Outside RTH" OFF: The trigger is only monitored during Regular Trading Hours (RTH).

2. How Orders Are Submitted

Once your conditional order is triggered, the system immediately submits your preset order.

Important: The preset order is assigned to the same session in which the trigger occurred. For example, if your condition is met during the overnight session, your order will be submitted as an overnight order. In addtion, if the condition is triggered during market hours, the order will be submitted for both Regular Trading Hours (RTH) and the extended Pre/Post-Market sessions.

3. Special Case: Market Orders

• Market Orders can only be triggered and submitted during Regular Trading Hours (RTH).
• For Market Orders, "Fill Outside RTH" is always set to OFF.

4. Order Expiration

After submission, your order follows the standard expiration rules for the session in which it was placed. For example, an overnight order will expire at the end of the overnight session if not filled.

For details about session expiration, please see 【Trading Sessions for U.S. NMS Stocks】.