There wouldn't have been 50 million sells today. The streamer / quotes thing on this site has been messed up; it has been saying CXAC has a bid of 0.0001 and ask of 0.0003 for at least a week now, when we were really at no bid / 0.0001 ask (until very late today when we got to 0.0001 bid / 0.0002 ask, but that was after 56-some million in volume). Therefore it registered all the 0.0001 trades as sells, because it thought that the trade occurred at the bid price (typically a sell), and not the ask price (typically a buy).