I was trying to buy BABA premarket, only 10 shares because I never trade pre-market and the spread is too wide for my taste. Just to see how ToS works...I never got filled. ToS shows prints for 1 share, 5 shares...etc but I never got my damn 10 shares, I matched in the DOM for offer and nothing. Maybe that offer for only for full 100 shares but I see the time of sales all sorts of prints. ToS shows my order is good and "working" BYW.