Quote from KingDong130:
I don't know what platform he's using but I traded MON on this day with lightspeed. I played the long above the 50 on the opening drive play when it showed strength above 49.90 and quickly through 50, the prices were skipping pretty good, but on a play like this I sweep my orders (as it appears he does too). I have a hotkey that pays through something like .06c or .08c (can't recall) on ARCA when the market is really moving, on plays like this I usually sweep either 500 or 1k shs, this day I was sweeping 500shs. So he could have a similar setup to pay through, so if he's sweeping say 500-1000shs has a pay through I don't think you would get odd fills, but thats just me.
I know a lot of momentum traders who have a similar setup, don't worry about add/removing liquidity, and make their bread and butter in plays like this. When I review there tape I rarely see odd lot fills when they are scaling in with 500-1,000shs.