The Dow Jones Composite Average is the stock market index composed of 65 prominent companies traded on both exchanges, maintained and tracked by S&P Dow Jones Indices. The average's components include every stock from the Dow Jones Industrial Average (30 components), the Dow Jones Transportation Average (20), and the Dow Jones Utility Average (15).
(as of December 2021)
The Dow Jones Composite Average is primarily made up of large market capitalization stocks, with a few middle capitalization and small capitalization companies included. 45 of the 65 components of the average are traded on the New York Stock Exchange, with the 20 others being traded on the NASDAQ.