There are two sides to every trade transaction. "Buys" means the trade took place at the ask and "Sells" means the transaction took place at the bid. (Through the added layer of the market makers building and reducing their inventory to make for a smooth market) Usually when there are more trades at the ask price goes up. Just looking at the last hour doesn't give you the whole picture. There were more trades at the bid today than at the ask (about 3 to 2) hence the price went down which would be expected. The 90,000 t-trade was listed as a "sell" . Click on "Trades" on the menu bar and you can see the trading transactions for the day. Yes there is all manor of tricky stuff that goes on in the market. But hey, what do you want? This is capitalism. You've got to roll with the punches and not get too caught up in the conspiracy theories.