For example:

A fund A is divided into A share and B share, in which the annual return rate of A share is fixed at 4%, and B share depends on market conditions. Investors can invest in A or B, but all the money is operated in Fund A. ..

For the convenience of calculation, assuming that the scale of A share and B share is equal, that is, there are 654.38 billion+,the scale of A fund is 200 million yuan. If one year, fund A earns 04 million yuan, then share A earns 4%, which is 04 million yuan, and share B has no income; If the income of fund A is 654.38 billion yuan, the income of A share is still 04 million yuan, the income of B share is 96 million yuan, and the income is 96%. If fund A loses 654.38+00%, the income of share A is still 4%, and the loss of share B is 654.38+04%.