It is best to add positions when the fund falls, which will reduce costs. When the fund falls, the same fund buys more fund shares, thus sharing the cost of investors. The lower the cost, the lower the risk that investors bear, and the higher the probability of earning in the future.

It should be noted that the fund's jiacang needs to be based on losses. If the fund is not in a loss state, even if it falls, there is no need to add positions, which will increase the cost of investors and is not cost-effective for investors.