The annualized rate of return of stock funds = (income/principal)/(investment days /365 days) * 100%, and the annualized rate of return refers to the annualized rate of return converted from the rate of return obtained during the duration of the fund.

For example, if you buy a fund with a day of 100, the rate of return is 800 yuan and the principal is 10000 yuan, then you can calculate that the annualized rate of return obtained by the fund is [(800/1000)/100] * 365×/kloc.