PDT rules are explained here: https://www.interactivebrokers.com/en/index.php?f=4745&p=daytrade I assume you had Zorro update your assets at least twice per day as you observed the mismatches you described above? If you did this for more than 4 assets you were hit by the rule... You can contact IB support and have the PDT removed once if you explain it was a mistake. Usually they send you a note about that, see your messages in the IB Account Mgmt portal.