It is best to have a low-cost position, which means that investors buy funds at a lower price. The threshold of fund investment is lower than that of stocks, and the risks that investors need to bear are relatively low, so most investors are willing to invest in funds. The lower the cost price of holding positions, the lower the risk that investors take and the higher the probability of earning profits in the future. Because if the fund rises after buying, investors can make a profit by selling it again. The cost price of fund positions is calculated by deducting the handling fee from the net value when buying funds. When the cost price of investors' positions is too high, investors can increase their positions when the fund falls to reduce the cost.