Market average indicators consisting (individually) of: (1) 30 industrial; (2) 20 transportation; and (3) 15 public utility common stocks. The composite average includes these 65 stocks collectively.
The oldest and most widely used measures of the overall condition of the stock market, each of the four averages is price-weighted and includes a few dozen widely held stocks. There are four Dow Jones Averages: Industrial, Transportation, Utilities, and Composite (the other three together).
The Dow Jones Company maintains several indices that are commonly used to show changes in the market. The three most common are the "Dow Jones Industrial Average," "Dow Jones Transportation Average," and "Dow Jones Utility Average." They consist of 30, 20, and 15 stocks respectively.
The average of closing prices of 30 representative industrial stocks, 15 public utility stocks, 20 transportation stocks, and an average of the 65 computed at the end of a trading day on the New York Stock Exchange.
The most widely followed index of US markets.... more on Dow Jones Averages
The most widely used Averages to track overall market conditions. There are four Dow Jones Averages: Industrial, Transportation, Utilities, and Composite. The Composite is simply the previous three combined.
The most widely quoted and oldest measures of change in stock prices. Each of the four averages is based on the prices of a limited number of stocks in a particular category.