Dow Jones Industrial Average – Wikipedia

The Dow Jones Industrial Average (DJIA), or simply the Dow (/ ˈ d aʊ /), is a stock market index that indicates the value of 30 large, publicly owned companies based in the United States, and how they have traded in the stock market during various periods. These 30 companies are also included in the S&P 500 Index.The value of the Dow is not a weighted arithmetic mean and does not represent …

Link: https://en.wikipedia.org/wiki/Dow_Jones_Industrial_Average