324. Mark Walter
$2.5 billion Self-made Score: * Source: finance age: 57 residence: chicago J.d., northwestern ’85
A reported power struggle at Walter’s investment firm Guggenheim Partners between Walter and Scott Minerd, the firm’s chief investment officer, doesn’t seem to be hurting the business too much. Guggenheim manages $290 billion in assets, up $50 billion in the past year.