Schwab has min qty, but TDA doesn't. Schwab has Minimum Quantity, AON and FOK (fill-or-kill). I usually set min qty so don't get commissioned with partial fills on thinly traded stocks. TD Ameritrade only has AON and FOK. Also, if unaware, in a regular market, having any special instructions may be the last order to get filled at that BID price. But not sure about the grey market. Who the heck knows what goes on in this market. GL getting filled, Scruff