you hit liquidity on lightspeed you're at .008 when you include the .003 taking fee and sec fees and there other bs fee's. its hard to beat ib's .005 all in rate . not to mention when fed funds were 5% ib paid around 5% and lightspeed for less than 100k was paying like 1%. there credit and debt rates are horrid. got to look at the whole package. ib's futures rates suck, anyone paying more than $4.25 r/t is getting screwed.you can get $4.25 with no vol and no software fees at a lot of places. shop around