Dow Jones index is an arithmetic average stock price index. Dow Jones index is the oldest stock index in the world, and its full name is average stock price index. Generally speaking, the Dow Jones index may refer to the first of the four groups of the Dow Jones Industrial Average. 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, calculated and compiled by arithmetic average method, and published in the Daily Communication edited and published by charles dow himself. Its calculation formula is: average share price = sum of selected stock prices/number of selected stocks. The purpose of this index is to reflect the overall trend of the US stock market, covering finance, technology, entertainment, retail and other industries. At present, the Dow Jones Industrial Average is maintained by the editorial department of the Wall Street Journal. The selection criteria of its constituent stocks include sustainable development, large scale, outstanding reputation, industry representation and being sought after by most investors. At present, 30 constituent stocks in the Dow Jones Industrial Average are representatives of blue-chip stocks in the United States. The subtle change of this mysterious index has brought panic or ecstasy to hundreds of millions of people. It is no longer an ordinary financial indicator, but a code name of the world financial culture. What is the Dow Jones index? Charles Henry Dow, a small farmer who only attended primary school, became an excellent financial reporter through self-study. Edward Davis Jones, a graduate of Brown University, has a bad temper, as his red beard shows. Charles milford Bergstreiser lost the chance to go down in history forever because of his long surname. Dow Jones index, the Dow Jones average stock price index, is the most influential and widely used stock price index in the world. It takes the stocks of some representative companies listed on the new york Stock Exchange as the compilation object, and consists of four stock price average indexes, namely: ① Dow Jones Industrial Stock Price Average Index, which is compiled for 30 famous industrial companies; (2) Dow Jones average stock price index of 20 famous transportation companies; (3) Dow Jones average index of public utility stock prices, which is compiled for the stocks of six famous public utility companies; (4) Dow Jones stock price composite average index, which is based on the stocks of 56 companies involved in the above three stock price average indexes. Among the four major Dow Jones stock indexes, the Dow Jones Industrial Average is the most famous, widely reported by the mass media, and cited as the representative of the Dow Jones index. The Dow Jones index was compiled and published by Dow Jones Company, an American newspaper group, and published in its subordinate Wall Street Journal. The Dow Jones index was first published on July 3rd, 1884. At that time, the index sample included 1 1 stocks, which was compiled by Charles Henry Dow (one of the founders of Dow Jones Company and the first editor of The Wall Street Journal). From 1928, 10, 1, the number of sample shares has increased to 30, and has remained so far, but the company as a sample share has undergone many adjustments. Dow Jones index is an arithmetic average stock price index.

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