The fixed investment of the fund is generally carried out in the process of falling. When the fund falls, it will use the same money to buy more fund shares. With more chips in hand, the cost can be reduced. On the contrary, it is not suitable for fixed investment when the fund rises, and the cost of fixed investment will be higher and higher when it rises. The higher the cost of investors, the smaller the risk, and the greater the probability of future losses.
Funds mainly earn bid-ask spreads, buy at low prices, and sell at high prices to gain income. For example, when investors buy funds, the price is 1, and when they sell funds, the price is 1.2. Then each fund can get the price difference in 0.2 yuan, which means that the lower the net value when investors buy funds, the better.