Among them, the fund unit net value refers to the current total net assets of the fund divided by the total fund share, and its calculation formula is: fund unit net value = total net assets ÷ fund share. 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; In contrast, the unit transaction price of open-end funds depends on the net asset value of the unit fund that has not been known at the time of purchase and redemption.