The volume you see is the sum of open orders and flat warehouse receipts, and positions are the sum of open contracts in the market. As you can guess, many orders will be leveled soon after they are opened, and their profits will be leveled only if there is a point or a jump point. I know several traders who place orders on the server in the exchange lobby, and it is common that the daily turnover reaches tens of thousands of lots. Their order placing speed is 0.3-3 seconds faster than off-site. These people may hold positions for a few seconds at a time, not overnight at the longest. So you can see the reason why the volume is large and the position has not changed much.