Quote from makloda:
Does anybody know if a OPG MARKET order is considered adding or removing liquidity @ IB?
I am guessing removing because it might hit another traders ask in the opening cross but I would like clarification.
Regardless of what you wanna call it, NASDAQ treats opening and closing cross orders differently in terms of fees than it treats regular "taking liquidity" orders executed during the day. Opening and closing cross orders are charged 0.0005 per share while "taking liquidity" orders during market hours are charged 0.003 per share.