Quote from Option Trader:
I find this information as important for IB traders, or for that matter traders of any broker to know about their broker, as you must know the rules of the game to be a successful trader. These are my conclusions regarding this thread & the thread of "Identifying when IB is your counterparty". If anyone would differ with ANY of these conclusions, and especially IB, please speak up:
1) IB, like any other MM is in business to make money, and do the same things the other MM's do. 2) IB does have a Chinese wall between the customer orders & Timberhill. 3) IB will prioritize filling the trades with Timberhill being the counterparty as opposed to another customer being the counterparty because it will usually prove more profitable to them, and because first scanning for the order to be filled between two IB customers would cause delays regarding the algorithm. 4) IB offers lower commissions for options for using smart route & for that matter pays various broker dealers to buy their order flow for the reasons mentioned above. 5) Regardless of how it happened, if IB or any other MM?? has a net long or net short position in a stock, they will "protect" themselves by placing huge bids in to support the price, or huge offers in to contain the price from turning against them. 6) Smart traders incorporate this type of information into their trading decisions.