Hello, What is you experience with them? I made an order test with a canceling condition based on a "midpoint" trigger but it seemed the order was cancelled a bit too late... Example : the order was supposed to be cancelled when midpoint of bid/ask was <= 1.32 but it was cancelled when midpoint < 1.32... Is it reliable? Another stupid question: Your TWS and market datas must be open for the conditions to trigger? conditional orders are not held on IB network to get filled according to market activity? Just to be sure... Thanks a lot.