Wal-Mart Stores founder Sam Walton and family saw the value of their stock lose more than $135 million last year but they remained the wealthiest people in the United States, U.S. News says.

The Waltons of Bentonville, Ark., whose stores are fixtures in small-town America, held $6.13 billion worth of stock in Wal-Mart, keeping them atop the magazine's Richest 100 list for the third time since the rankings began three years ago, U.S. News said in its Aug. 1 editions.To make the list, an individual or family must own at least 5 percent of the shares of a publicly traded company. This is the level the government considers large enough to influence management.