600 yuan. Fund income = principal * rise and fall. For example, if an investor holds a fund of 6,543,800,000 yuan, and the fund rises by 6% on that day, it can be calculated that the investor's income is: 6,543,800,000 yuan multiplied by 6%=600 yuan Fund, which broadly refers to a certain amount of funds set up for a certain purpose. It mainly includes trust and investment funds, provident funds, insurance funds, retirement funds and funds of various foundations.