The original purpose of futures is to hedge risks for enterprises, so the initial contracts you see will start a long time in advance, but the trading volume is very small, because enterprises usually enter at this time. After a period of time, the main futures contracts will be transformed and the trading volume will be enlarged. At this time, many individual speculators will go in, and the transaction volume will not be large when the delivery is nearby, and it will gradually become smaller. At this time, individual traders will move their positions, and the positions inside are all enterprises ready for delivery.