Renaissance Technologies

Jim Simons cracked codes for the military during the Cold War. Then he quit and built a hedge fund. His first move wasn't hiring bankers or traders. He hired mathematicians, physicists, and scientists who'd never seen a stock chart. In nineteen eighty-eight, the Medallion Fund opened with equations instead of assumptions. The models saw patterns traders missed. They didn't ask why stocks moved, but how often they moved the same way. Correlations and sequences hidden in noise. Strategies shifted daily, sometimes hourly. A profitable pattern would vanish once discovered, so the code adapted constantly. During the two thousand and eight financial crisis, while the S and P dropped thirty-eight point five percent, Medallion gained ninety-eight point two percent.