If someone likes to do a lot of scalping intraday they may find "patterns" from the wall activity that may be benificial for them to time entries or exits. As far as ACV ratio goes, if you start hitting at least a 2:1 ratio on the DOM, you are looking for price to trade to the side with size (not away from it).Quote from jorgez:
So why would anyone bother using them if they work sometimes and not others.
