248. Marc Rowan
$3.1 billion self-made score: * source: Private equity age: 55 residence: new york city m.b.a., u. of Pennsylvania ’85 One of the triumvirate who founded Apollo Global Management in 1990. (Leon Black, No. 76, and Joshua Harris, No. 226, are the other 2.) He cut his teeth in the 1980s at Drexel Burnham Lambert. Apollo’s latest fund has raised over $24 billion.