Normally I trend trade and use momentum. But the other day I was thinking about using a different strategy. I was trading BKS and noticed that the spread was about 10 cents. So lets say the bid was 15.05 and the ask was 15.15. What would happen if I narrowed the spread by placing a bid for 1000 shares at 15.07 and an ask for 1000 shares at 15.13? Would other market making competition come in and compete most likely? Should I just use a small amount of shares? I have direct access and can do this, just wondering whether or not I should have a program doing it instead.