Jim Simons, the legendary "Quant King" who founded Renaissance Technologies, died Friday at the age of 86, after forever changing Wall Street with his genius for math and finding patterns in data.

Jim Simons, the math professor who became one of the most successful hedge fund managers in history, died on Friday at the age of 86, according to his foundation. Simons, a prolific philanthropist who ...

JIM SIMONS, a prizewinning mathematician who abandoned a stellar academic career, then plunged into finance – a world he knew nothing about – and became one of the most successful Wall Street ...