sorry to write this in a new thread, but I tried to reply in the original thread without success. Considering the member really wanted the answer I post it here... With IB when you buy there is a minimum 100 shares. That's hardcoded in the software. This is on a specific request from NYSE/AMEX which was complaining about people sending limit orders with odd lots. I am not working for IB, I'm a customer, and indeed NYSE sent me a complaint through IB [I was testing buying odd lots of QQQ]. Of course you can order odd lots with Island, but my test was using the automatic routing from IB, which directed to NYSE I suppose. You can sell any number of shares though. NYSE requests that you use market orders if you want odd lots execution. That should be OK for buy and sell, but IB took the safe way. I can live with that. I would not like my account closed because IB is very good for listed stocks [and futures, I guess options also], although less good for Nasdaq because of difficult manual routing [and no level II]. Again, I don't mind the restrictions and 100 shares lot. If someone can not buy 100 shares min, he should not trade. If he is trying expensive stocks, OK, that can be a good reason, but then, trade less expensive stocks, odds are you can not afford to trade the pricy ones.