WARREN STEPHENS

$2.5

BILLION  SELF-MADE SCORE: $ SOURCE: INVESTMENT BANKING AGE: 62 RESIDENCE: LITTLE ROCK, AR PHILANTHROPY SCORE: Stephens is the president and CEO of Stephens Inc., a privately held investment bank that his uncle Witt Stephens founded in 1933. The Arkansas-based bank underwrote Walmart’s public offering in 1970 and now has 24 offices in 13 states. In January a housekeeper got stuck for three days in the elevator of a Manhattan town house he owns. In a statement, Stephens’ company said it was working “to ensure that something like this never happens again.”