Wal-Mart Stores
2.Wal-Mart Stores, Inc. was founded by Sam Walton in Arkansas in 1962.
3.Five relatives of the late Sam Walton, founder of Wal-Mart Stores Inc., tied for fourth.
4.Wal-Mart Stores, Inc. was founded by Sam Walton, a legend of American retail industry, in Arkansas in 1962.
5.Surging oil prices also helped some members of the list. Oil baron brothers Charles and David Koch also broke into the top 10, sharing the No. 9 spot with estimated wealth of $17 billion. Their ascension bumped the Walton family, heirs to the Wal-Mart Stores Inc. fortune, from the top 10 for the first time since 1989.

