The rate of return this year refers to the ratio of profit and loss from January 1st to now.

So the initial value is the net fund value on the last trading day of last year, and

the final value is the latest net fund value.

calculation formula: rate of return since the beginning of this year = (period ending-period beginning)/period beginning

For example, if the net value of a fund on the last trading day of last year was 1.255 yuan, the latest fund net value updated yesterday was 1.898 yuan, and there was no fund dividend in the middle, then the rate of return since this year = (1.898-1.255)/1.255 = 51.25.