388. Peter Peterson
$2 billion Self-made Score: ) Source: investments age: 91 residence: new York city m.b.a, u. of Chicago ’51 Peterson had a storied career on Wall Street—he was chairman and CEO of Lehman Brothers in the 1970s and early 1980s and served as U.S. commerce secretary under Nixon for a year. He cofounded investment firm Blackstone Group with Steve Schwarzman in 1985 and retired as senior chairman in 2008. His Peter G. Peterson Foundation, run by his son Michael, educates the public about the large U.S. deficit and works to improve U.S. fiscal health.