278. Jim Breyer
$2.9 billion self-made score: * source: venture capital age: 56 residence: Woodside, calif. m.b.a., harvard ’87 In 1982, Breyer sent his résumé to Steve Jobs, who forwarded it to Apple’s director of marketing. He was hired for the summer and parttime while he was at Stanford. The economics and computer-science major spent his junior year in Florence studying Renaissance history and art. He went on to become one of Silicon Valley’s top venture capitalists, running Accel Partners for 2 decades. Breyer’s track record counts investments in more than 40 companies, including Facebook, that have completed successful IPOS or mergers. Now investing on his own through Breyer Capital, he is betting big on artificial intelligence.