According to the requirements of the CSRC, the calculation formula of the fund's net growth rate is today's net growth rate = (today's net value-yesterday's net value)/yesterday's net value. If there is dividend on that day, the growth rate of today's net value = [today's net value-(yesterday's net value-dividend)]/(yesterday's net value-dividend). Net fund value refers to the net fund assets represented by each fund unit, and the calculation formula is: net fund assets per fund = (total assets-total liabilities)/total number of fund units. Cumulative fund net value refers to the sum of the latest fund net value and dividend performance since its establishment, which reflects the cumulative income since the establishment of the fund (minus the face value of one yuan as the actual income), which can reflect the historical performance of the fund in the operation process more intuitively and comprehensively, and can be more accurate in combination with the operation time of the fund. Cumulative net value of fund share = net value of fund share+cumulative dividend amount of fund share after establishment. For example, a fund once paid dividends, and every 10, it paid dividends to 0.2 yuan. If the net value of fund shares announced on that day is 1.02 yuan, the cumulative net value of fund shares is1.02+(0.2/10) =1.04 yuan. The net growth rate refers to the growth rate of the fund's net assets in a certain period, and you can use it to evaluate the performance of the fund in a certain period.