The rise and fall of the fund is expressed as a percentage, which is actually the so-called "period rate of return". Period yield% = (final value-initial value)/initial value.

Extended reading:

1. Subscription: suppose a fund subscribes 1 0,000 yuan, the subscription rate is 1.5%, and the net value of the day is 1.2000. Net subscription amount = subscription amount ÷ (65,438+0+subscription rate) = 65,438+00000.00 \ subscription fee = subscription amount-net subscription amount =10000.00-9852.22 =147.78. Subscription share = net subscription amount ÷T-day fund share net value = 9852.22 ÷1.2000 ≈ 8210.18 (copies)? .

2. Redemption: Assuming that the fund is redeemed after one month, the redemption rate is 0.5% and the net value of the day is 1.4000. Total redemption amount = redemption share ×T-day fund share net value = 8210.18×1.4000 ≈11494.25 (yuan)? Redemption fee = total redemption amount × redemption rate =11494.25× 0.5% ≈ 57.47 (yuan)? Net redemption = total redemption amount-redemption fee =11494.25-57.47 =11436.78 (yuan)? Net profit =11436.78-10000.00 =1436.78 (yuan).