2 published verifications about Renaissance Technologies Renaissance Technologies ×
“Jim Simons has the highest investing returns (net of fees) of any investor in history.”
Available evidence strongly indicates Simons's Medallion Fund delivered the best-documented long-term net returns in modern investing. Reuters, the Financial Times, Bloomberg, and Morningstar consistently report roughly 35-40% annualized returns after fees over decades, far above famous peers. The absolute phrase "of any investor in history" is broader than the evidence can prove exhaustively, and some sources report slightly different net figures.
“Jim Simons kept his trading practices secret because he did not understand how he achieved his investment returns.”
The claim is false. The only supporting evidence refers to Simons' early 1980s period when he traded on intuition and lost money, not his later systematic approach that generated massive returns. Multiple sources show he clearly understood his data-driven methodology.