1. Dow Jones index The Dow Jones index is the oldest stock index in the world. It was compiled by charles dow, the founder of Dow Jones Company, in 1884 by arithmetic average method. Its calculation formula is: average stock price = S & amp；; of selected stock price; amp； amp； S/ number of selected stocks 2. Standard & Poor's Stock Price Index (S&; P 500) Take the current stock market price multiplied by the number of stocks in the base period as the denominator and multiply the divisor by 10 to get the stock price index. Standard & Poor's. P500 Index is an index obtained by the American McMcGraw Hill Company from 500 stocks selected from new york Stock Exchange, American Stock Exchange and OTC market, including 400 industrial stocks, 40 industrial stocks, 40 financial stocks and 20 transportation stocks. The average S&P price from 194 1 to 1943 is. P company promotion. Because s&; P index accounts for almost 80% of the total value of NYSE shares, and stock selection takes into account market value, liquidity, industry representativeness and other factors. Therefore, this kind of index futures is favored by institutional legal persons and fund managers as soon as it is launched, and it has become an important reference index for evaluating operating performance. 3. NIKKEI 225 Average Stock Price Index (Nikkei 225) This index is the average stock price compiled and published by Japan Economic News Agency to reflect the price changes of Japanese stock market. The index was compiled from September 1950. Initially, the revised average share price was calculated based on the shares of 225 companies listed on the first market of Tokyo Stock Exchange.