219. Peter Kellogg
$3.4 billion self-made score: $ source: investments age: 75 residence: short Hills, n.j. B.s., Babson ’64 Kellogg took over Spear, Leeds & Kellogg, the brokerage house where his father was a partner, in 1973. He helped turn it into the biggest specialist brokerage firm on the New York Stock Exchange before selling it to Goldman Sachs in 2000 for $6.5 billion in cash and stock.