Open Orders → GTT, tap the order, tap Modify, edit the trigger price or quantity, then tap Modify GTT to save the changes.
How to modify a GTT order
1. Open Orders and switch to the GTT tab.
2. Tap the active GTT order you want to change — its detail sheet opens.
3. Tap Modify.
4. Edit the fields you want to change — trigger price, quantity, or price. For an OCO order, both the Stop Loss and Target legs are editable.
5. Tap Modify GTT to save.
You'll see a "GTT Order Modified Successfully" confirmation, and the GTT tab shows the updated trigger prices right away.
Things to keep in mind
- You can only modify a GTT order while it's Active — once it's triggered, executed, or cancelled, there's nothing left to modify.
- Modifying doesn't reset the order's place in any queue or affect other open orders on the same stock.