Wal Mart Inc. (NYSE: WMT) is a worldwide U.S. chain enterprise that is the world's largest by turnover and controlled by the Walton family. Headquartered in Bentonville, Arkansas, USA (north-west of Little Rock). Wal-Mart is mainly engaged in retail, which has the largest number of employees in the world and has been ranked first among the Fortune Global 500 companies for five consecutive years. Wal-Mart has 8,500 stores in 15 countries around the world, operating in 50 states and Puerto Rico. Wal-Mart mainly has four types of business, including Wal-Mart shopping malls, Sam's Club, Wal-Mart stores, Wal-Mart community stores, etc.