Send us a textJames Simons is a mathematician and cryptographer who realized that the complex math he used to break military codes could also explain patterns in the world of finance. Jim Simons has been described as "the world's smartest billionaire", amassing a fortune through the clever use of mathematics and computers. He has stepped down as the chairman of Renaissance Technologies, the most successful quant hedge fund in history this January. Simons has not overseen the day-to-day runnin...