1, the expected rate of return of the fund's fixed investment is calculated by the fund company according to the distribution of the fund's fixed investment and the expected rate of return of each distribution multiplied by the distribution ratio. Expected rate of return, also known as expected rate of return, refers to the expected rate of return without unexpected events. The expected rate of return can be exponential rate of return or logarithmic rate of return, that is, the expected rate of return is expressed by the rate of change of market index or the logarithm of the rate of change of index.

2. Fixed investment is the abbreviation of fixed-term investment fund, which means that a fixed amount (such as 500 yuan) is invested in a designated open-end fund at a fixed time (such as the 8th of each month), which is similar to the bank's deposit and withdrawal method. People usually refer to funds mainly as securities investment funds. There are three main analysis methods of securities investment: basic analysis, technical analysis and evolution analysis, in which the basic analysis is mainly applied to the selection of investment objects, while the technical analysis and evolution analysis are mainly applied to the temporal and spatial judgment of specific investment operations as an important supplement to improve the effectiveness and reliability of investment analysis. [ 1-2]