There was a very aggressive buyer earlier (threw a 20,000 share market order out earlier that ran prices up .30+ just to find enough shares to fill it), and there may be some shorts that got caught. The last few days someone(s) have been playing rapidly move the bid/ask around without any shares trading. Couldn't decide if it was someone trying to flush out some cheap shares or get a better sale price. And most of the trades would go through in between the bid/ask.