it's okay. THIS is the bidwhacker, which takes retail off the hook. https://theintercept.com/2016/12/15/whistleblower-vindicated-massive-trading-firm-knight-capital-charged-with-abusing-naked-shorts/ all the MMs do it - NITE, CDEL, etc. and it's totally legal if it's not manipulation. what defines that is up for debate. ;-) anyway, bottom line: retail is not dumb enough to bidwhack here.