Role: Dow Jones generally refers to the Dow Jones Industrial Average, and now it is composed of 30 large companies, not just industries.
(2) Nasdaq is the name of the automatic quotation system founded by American Securities Dealers Association in 1968. Nasdaq is characterized by collecting and publishing quotations of securities and securities companies with unlisted stocks. It has now become the largest stock exchange market in the world. At present, there are more than 5,200 listed companies. Nasdaq is also the first stock market in the world to adopt electronic trading, with more than 260,000 computer sales terminals in 55 countries and regions.
Role: Nasdaq is mainly a company in telecommunications, biotechnology, software and computers, retail and wholesale trade, similar to GEM;
(3) The Standard & Poor's 500 Index was compiled by Standard & Poor's Company in 1957. The first constituent stocks of the stock selection index include 15 railway stocks, 425 industrial stocks and 60 public utility stocks. Since 1 July, 19761day, its constituent shares have been changed into 20 transportation shares, 40 public utility shares, 400 industrial shares and 40 financial shares. It takes 194 1- 1942 as the base period, and the base period index is set to 10, which is calculated by the weighted average method and weighted by the base period.
Compared with the Dow Jones Industrial Average, the Standard & Poor's 500 Index has the characteristics of strong representativeness, high precision, wide sampling range and good continuity, and is generally considered as the ideal target of stock index futures contracts.
Function: Standard & Poor's consists of 20 transportation stocks, 40 utility stocks, 400 industrial stocks and 40 financial stocks, which reflects the overall situation of the American economy and is the target of an ideal stock index futures contract.