Euclidean Capital

Family office of the late Jim Simons (1938-2024), legendary mathematician and founder of Renaissance Technologies. Simons was often called "the greatest investor on Wall Street" - his Medallion Fund generated 66% average annual returns (39% after fees) from 1988-2018, producing $104.5 billion in profits. Former NSA codebreaker, Stony Brook math chair, and co-author of Chern-Simons theory. Net worth peaked at $31.4 billion. Founded Euclidean Capital 2009 to manage personal wealth. Led by CIO Ashvin Chhabra (former Merrill Lynch CIO). Focus on AI, biotech, life sciences investments. Also funds Simons Foundation ($4B+ in science philanthropy) and Flatiron Institute computational research.