Today I discovered that IB's JTWS software doesnt allow me to place odd lot orders on QQQ, SPY and DIA using the ISLD exchange. I understand that I cannot place opening odd lot orders on NYSE, but it SHOULD BE ALLOWED on ISLD ECN. The same restriction applies to NYSE stocks traded on ISLD ECN. Is this a new unannounced policy from IB ? Or maybe IB programmers forgot this detail when they programmed the restrictions ? ? Would like an explanation hsanson "There is no perfect trading system, but there are good ones that can make you rich"