Standard & Poor's 500 Index was compiled by Standard & Poor's Company in 1957. The initial constituent stocks include 425 industrial stocks, 15 railway stocks and 60 public utility stocks. From July 1 9761,its constituent stocks were changed to 400 industrial stocks, 20 transportation stocks, 40 public utilities stocks and 40 financial stocks. It takes 194 1 to 1942 as the base period, and the base period index is set to 10. It is calculated by the weighted average method, with the listed amount of the stock as the weight, and the weighted calculation is carried out according to the base period. Compared with the Dow Jones Industrial Average, the Standard & Poor's 500 Index has the characteristics of wide sampling area, strong representativeness, high accuracy and good continuity, and is generally regarded as the ideal target of stock index futures contracts.

The Dow Jones index was first compiled by charles dow, the founder of Dow Jones Company, in 1884. Its original Dow Jones stock price average index is based on 1 1 representative railway companies and compiled by arithmetic average method. Starting from 1897, the Dow Jones stock price average index is divided into two categories: industry and transportation, in which the industrial stock price average index includes 12 stocks and the transportation average index includes 20 stocks, which are published in Dow Jones Company. 1929, the Dow Jones stock price average index increased the number of public utility stocks, making it contain 56 stocks, and it has continued to this day.

Forecasting is only forecasting, and only the market is correct. Never predict, be optimistic about the stocks in your hands, avoid big losses, and strive for greater returns is the right way for the stock market.