Dow Jones Industrial Average
The Dow Jones Industrial Average is a frequently quoted index of 30 of the nation's top public companies. Each company is weighted based on its market capitalization and the combined value of all 30 equals the average. The companies are chosen to give a broad reflection of corporate industry in the U.S. Below are the 30 companies that make up the average along with their stock symbol, primary business and their index weighting. Cisco Systems and Travelers replaced Citigroup and General Motors in June. See stock quotes of all 30 companies.