The weighted average rate of return of the fund is equal to ∑ (the rate of return of each asset multiplied by the weight of the asset in the fund portfolio). The formula for calculating the weighted average return rate of funds is: the weighted average return rate of funds is equal to ∑ (the return rate of each asset multiplied by the weight of the asset in the fund portfolio), where the return rate of each asset refers to the return rate of the asset in a certain period, and the weight of the asset in the fund portfolio refers to the proportion of the fund assets in the portfolio, which is usually measured by the market value of the factory. The weighted average return on net assets can be used as an important indicator to measure whether the fund manager is good at investing and whether the investment strategy is feasible, and can be used to intuitively compare the investment return and risk level of investment funds.