Up to this point there has been nothing negative disclosed. I would think the sellers are more traders than investors. As investors you have to ask yourself "are you investing because dvax has a high chance of approval?" I predict dvax will slowly go back to the 20s by december and then the real gamble will be the fda date. The news and the Ceo were all confident for the approval but the 3 month delay could mean anything. The 3 month delay might have caused the buyers to think longer and the seller were just selling out of the stop limits and the fear of getting lower. But when dec come...things start to get clearer...I believe this will go to 20s easy before the fda date.