The MM doesn't need to pick up the current ask he can swap at a fraction less in house because he keeps more commissions. So a really huge commission on a 20K order for .00001 less than the ask. Yea it was a giant order with the number of shares and $$s...$69.80 instead of $70 OKY DOKY. Did that "extra" commission pay for a piece of gum? investorshub.advfn.com/uimage/uploads/2017/11/7/sluqvHAHAHA.gif