Dow Jones Industrial Average (DJIA) : Dow Jones, Dow, Dow 30, Wall Street 30. Google finance: INDEXDJX: .DJI, Marketwatch: DJIA, Yahoo finance: ^DJI. Consists of the 30 major American companies. US stock market index that shows how 30 large publicly owned companies based in the United States have traded during a standard trading session in the stock market. Foundation: February 16, 1885 (as DJA) and May 26, 1896 (as DJIA), Operator: S&P Dow Jones Indices, Exchanges: New York Stock Exchange (NYSE) and NASDAQ, Constituents: 30 companies, Weighting method: Price-weighted.
