Net Worth: $3 Billion

Location: U.S.A

Born in Chicago, IL, David is one of the newest Billionaires to Forbes list. He is Chairman and Founder of World Wide Technology, Inc., one of the largest African-American-owned businesses in America. In 1990, he put up $250,000 he earned from two previous auditing ventures to start the St. Louis-based WWT business.

In the early days, Steward sometimes went without a paycheck and once watched his car get repossessed from the office parking lot. Today Steward is majority owner of the $11.2 billion (sales) company, whose customers include Citi, Verizon and the federal government.