Billionaire investor James Simons, who founded one of the world's most prominent and profitable hedge funds, Renaissance Technologies, has died at 86. The Simons Foundation, however, did not give a cause of death. Crispino Nunes tells you more #JimSimons | WION

Jim Simons: life and philanthropy Jim Simons, born in 1938, is a mathematician and hedge fund manager. He earned a Ph.D. in mathematics from UC Berkeley and made significant contributions to geometry, including the Chern–Simons theory. In 1982, he founded Renaissance Technologies, a quantitative hedge fund known for its Medallion Fund’s remarkable returns. Simons retired in 2009 but remains active in overseeing the firm’s charitable initiatives. Through the Simons Foundation, he supports scienti