I never got around to listing but here's my rationale. There are not many shares out their to trade. I think we can all agree on that. If you put a carrott out there that's not too far away from the normal trading range the MM ususlly will walk the stock up or down within a few hours if they really want them. Immediately afterwards they walk it down twice as fast. It's worked for me several times on different stocks. Now if yoy look at the intra day high for yesterday on the daily chart we never hit higher than $4.48 but the day high wasa $4.50. That was my 500 sell order. They never filled it becasue when it got close, I cancelled the trade. Right after that, it retreated back to where it finished the day @4.44.