From their news page: http://www.interactivebrokers.com/en/p.php?f=news&p=n&ib_entity=llc I've tried this out and it works just fine. Good move, IB! Also, delayed market data is supposedly available (I have yet to try this out): http://www.interactivebrokers.com/en/software/releaseNotes/TWS_Notes_900.php#900_delayedData