There is a difference between the increase of the fund and the income. The increase of the fund reflects the increase of the net value of the fund, and the income is calculated according to the increased part. For example, if an investor holds a fund of 10000 yuan and the fund rises by 5% that day, then the return is 10000 * 5% = 500 yuan.

Fund income is the part of fund assets that exceeds their own value in the process of operation. Specifically, fund income includes dividends, bonuses, bond interest, price difference between buying and selling securities, deposit interest and other income.