First, if the fund loses money, it will make up the position, so that it makes sense to increase the position. Secondly, funds can cover positions in batches, and investors can set target positions. If the fund falls by 10%, it will start to increase the position by one third, then increase the position by 10% for the second time, one third, and so on. When the fund starts to rise, it will stop adding positions.

The purpose of fund covering positions is mainly to reduce the cost of investors. When the net value of the fund is lower than the net value of the investor's position cost, the same fund will be used to buy more fund shares, thus reducing the cost. The lower the cost, the less risk investors will take.