I noticed that on thursday or friday expiration I notice some stocks crash hard price was if its trading around one of the strikes and lots of open interest on the call. Like GE I notice it was hovering around 14 and the call open interest was high and now a big plummet under 14. Is there some kind of way things go. with calls. like big shortselling or unloading of stocks prior to expiration? GE seems to do this usually I have noticed.