Companies that frequently appear on the Fortune 500 list include Walmart, Exxon Mobil, General Electric, AT&T and General Motors. As of 2015, all of these companies have appeared on the list for at least the last 10 years.
Other top companies in the same industries also regularly appear on the Fortune 500 list, such as Target, Chevron, Verizon and Ford Motor Company. Frequently-listed companies in other industries include Microsoft, UnitedHealth Group, Kroger and Procter & Gamble.
The Fortune 500 list ranks companies by total revenue. It includes companies that operate and are incorporated in the United States and that file financial statements with a government agency.