The Sharp Index of China Fund is generally between 0 and 30%, generally between 20 and 30%, and some can reach 20%, many of which are negative and meaningless. The Sharp Index is a risk-adjusted performance indicator. Sharp index reflects the extent to which the net growth rate of unit risk fund exceeds the risk-free rate of return. If the Sharp ratio is positive, it means that the average net growth rate of the fund during the measurement period exceeds the risk-free interest rate. In the case that the interest rate of bank deposits in the same period is risk-free interest rate, it means that investment funds are superior to bank deposits. The greater the Sharp ratio, the higher the risk return of fund unit risk. On the contrary, it shows that the average net growth rate of the fund during the measurement period is lower than the risk-free interest rate. Under the condition that the bank deposit interest rate is risk-free in the same period, it shows that the investment fund is worse than the bank deposit and the investment performance of the fund is not as good as the national debt repurchase. When the Sharp ratio is negative, sorting by size is meaningless. Sharp theory tells us that when investing, we should compare risks and try our best to exchange small risks for big returns. Therefore, investors should grow up and try to avoid some unworthy risks.

At the same time, if you lack investment experience and research time, you can let real professionals (not just salespeople who sell financial products to you) help you build a portfolio that suits you and minimize risks. These portfolios can measure the ratio of risk to return through Sharp ratio. If the yield of national debt is 3%, the expected return of your portfolio is 15%, and the standard deviation of your portfolio is 6%, then use 15%-3% to get 12% (representing the return other than risk-free investment), and then use12%/6.