The net value of a fund unit is the net asset value of each fund unit, which is equal to the balance of the total assets of the fund minus the total liabilities and then divided by the total number of unit shares issued by the fund. The subscription and redemption of open-end funds are carried out at this price. The transaction price of closed-end funds is the known market price at the time of trading; On the other hand, the unit transaction price of the open-end fund depends on the net asset value of the unit fund, which is unknown at the time of subscription and redemption (but it can be calculated after the market closes on the same day and announced on the next trading day).
Before the expiration of physical delivery or cash delivery, investors can voluntarily decide to buy and sell futures contracts according to market conditions and personal wishes. However, investors (bulls or bears) hold futures contracts without performing reverse operations (selling or buying) with the same delivery month and quantity. This operation is called "holding positions". In the futures operation of gold and other commodities, whether buying or selling, all new positions are called opening positions. After the operator opens a position, he holds a position in his hand, which is called a position.