Due to a recent thread about a "phantom" order being executed later, it is good to think about some precautions to against this risk. 1. TWS is a software. It may be subject to bugs. How can you check to make sure there is clearly no unexpected execution or positions in your account? 2. If you see a seemingly unexpected trade, order or position, you are not sure whether it is real or phantom. What are you going to do? Thanks for the discussion.