show me proof and details. You absolutely have no clue what you are talking about. IB doesn't play any games with customer orders. The facts are very simple. IB's SMART routing in options is probably the best in the business. As far as I know we are also the only firm dynamically routing retail orders to move from one exchange to the next in attempts to achieve better fills. IB is also the only firm that I know of that takes the execution risk when trying to leg spreads electronically between different exchanges. A large number of institutions and many of the largest brokers utilize IB's SMART routing to execute for their clients. When proposing our routing services to them, we are quick to show them our routing statistics. Why? It speaks and sells for itself. as an aside to your ridiculous comment about trade busts for timber hill (which of course has nothing to do with IB orders)..... Where do you draw the line? last month a firms screw up caused tmbr to execute over 100K contracts in a few seconds. The firm that messed up hit every offer and bid on the same delta side that was sitting at the exchange. Due to the milliseconds in difference between orders submitted to the exchange, a number of trades took place at poor prices when quotes were being updated. Let's assume the delta was over 1000 futures. When you are electronic you immediately hedge the delta. The initial 100K trades trigger thousands of other trades with third parties. So what do you do? Let the party that messed up out of their trades and take the hit on your hedge? Sorry, can't do that. Instead you rebook the trades that are grossly out of range.