Net Worth: $21.6BAge: 81Country/Territory: United StatesSource: Hedge FundsIndustries: Finance & Investments
Jim Simons is the founder of Renaissance Technologies, an esteemed quantitative trading hedge fund firm that manages $68 billion. He founded Renaissance Technologies in 1982 and retired in 2010, but he still plays a role at Renaissance and benefits from its funds. Renaissance Technologies is famous for its Medallion Fund, a $10 billion black-box strategy that is only open to Renaissance’s owners and employees. Simons has given $2.7 billion to philanthropic causes. His foundation is the primary funder of Math For America. He also supports autism research. Simons used to chair the math department at Stony Brook University and was a codebreaker for the U.S. during the Vietnam War.