Volume doesnt necessary affects the price. If ppl all buy 1 billion shares at the opening price for the day. Nothing happens. Volume does however tell us how many people r interested or got tired of the stock. So comparing to yesterday volume, people r still interested in erbb.
It's the just market makers making trades while the bid is there, we'll see if they have to pay for their greediness. Who knows at what prices and when these trades are really occurring in the OTC, I've heard and seen trades of mine get split and reported during the wrong time in other pinkies. They might have been whacking the pps down to get a lot of sell orders below these prices overnight to cover their naked bid whacks in preparation for the next leg. They're picking up pennies in front of a bull-dozer trying to collect commissions, let's hope someone loses a hand.
you can only assume that it was a huge pump and dump. But there is always tommorow (and until the feds say something). 17.5% isnt even bad, i was in before that so it is still and 12% from the last couple days.