I cannot be less honest and straight-forward about this as it gets more and more serious. IB quote is like a joke. I don't know why. There is fake bid/ask/size all the time. When you try to hit them, there is no execution. This could be either a serious irregular problem such as delays/missed-update in their systems, or the rumor which speculate that there are some sort of middle-man scheme manipulating the customers is true. I don't know. You tell me! me and friends are tired of these. It does not justify the commissions paid to you! no now!