The unknown price method is used to buy open-end funds, that is, when you buy open-end funds, you buy them by determining the amount. For example, you want to buy a fund of 654.38+10,000 yuan, but you don't know how many copies you can buy and how much each one costs. When you sell funds, your share is certain, that is, when you sell, you sell 5000 funds, but you don't know how many these funds have been sold for the time being. I usually know that night except holidays.
The "unknown price method" is adopted to prevent investors from deciding to buy and sell according to the securities market situation of the day, thus adversely affecting the interests of other fund holders. For example, the transaction of open-end funds adopts the "historical price" method, that is, the purchase and redemption are based on the net asset value of the fund unit announced the day before, so the net asset value of the fund unit will increase with the rise of the stock market price on that day, and because it is priced according to the net asset value announced the day before, investors can realize the increased net asset value on that day with less funds; When the stock market falls, investors' redemption will avoid the loss of falling net value that day. This may lead to arbitrage, which is unfavorable to the long-term investors of the fund, the stable operation of the fund and the stability of the net value of the fund unit. Therefore, the international open-end fund transaction adopts the "unknown price method", and the purchase and redemption price is calculated according to the net value of the fund unit announced the next day.