No, when the fund falls, it can directly cover the position. Both selling and buying will lose time cost and handling fee cost. Buying when the fund falls can reduce the cost for investors. The lower the cost of investors, the higher the probability of returning money or making money in the future.

It should be noted that the fund's short positions need to be based on the losses of investors. If investors are in a profitable state, there is no need to increase their positions even if they fall. Adding positions will increase the cost of investors, which is not cost-effective.