To be clear, this is a GTC/GTD order, so there's also this: In some cases your order will be resubmitted as a Limit-on-open (LOO) order Ref: https://www.interactivebrokers.com/...ebook/ordertypes/time_in_force_for_orders.htm https://www.interactivebrokers.com/en/index.php?f=590