The Dow Jones Industrial Average (DJIA) is one of several stock market indices created by Wall Street Journal editor and Dow Jones & Company founder Charles Dow. Dow created the index as a method of measuring performance of the industrial component of America's stock markets. It is the oldest existing U.S. market index, and is comprised of a weighted average of the prices of its component stocks. There are currently 30 stocks comprising the index as of his writing.
