The Dow Jones Industrial Average is a stock market index that measures the daily price movements of 30 large publicly owned American companies that are traded on the New York Stock Exchange and Nasdaq. Unlike the S&P 500 it is not weighted by market capitalization, rather it is weighted by price, which means that stocks with the highest stock prices receive larger weighting. Also known as the Dow, the Dow Jones, the Dow 30 and the DJIA, it is one of the most widely watched stock market indices in the world and serves as a benchmark of the health of the US economy. Companies from all major sectors apart from transportation and utilities are included in the Dow. The Dow Jones Transportation Average (DJTA) and Dow Jones Utility Average (DJUA) cover these industries.null