Buying funds in bulk is an investment strategy of funds. Compared with one-time buying funds, buying funds in batches has different holding costs and risks. For example, the fixed investment of the fund is to buy in batches, which can usually be divided into equal fixed investment and variable rated investment.

When investors adopt the strategy of equal fixed investment, the same amount of funds will buy more stocks at low prices and less stocks at high prices. Therefore, it can reduce the average position cost, improve the income when the fund rises, and reduce the loss when the fund falls. However, changing the graded investment will increase the investment share when the fund falls and decrease the investment share when the fund rises.