Yes, I agree with you. My doubts are: 1. They don't have a negative return. For example, every time the SP500 was negative the Medallion Fund's return was pos

Yes, I agree with you. My doubts are: 1. They don't have a negative return. For example, every time the SP500 was negative the Medallion Fund's return was positive by much more. Sometimes x2 or x3. It can happen in the financial world but that it always happens seems strange to me. 2. Renaissance Technologies' public funds are as good as any, with ups and downs. Instead the "secret" one, the Medallion Fund, always positive return. 3. Mystery. Employees can't talk about how they make money. The money is managed internally without having external inputs. Warren Buffett is transparent about everything. For better or for worse, you find his companies where invest, you know his investment philosophy, his mistakes and his victories. Here you find only victories. 4. The financial media constantly praises him but no one has ever questioned him. All speeches and questions are "fantastic team", "mathematics", "quantum strategy". Very generic. Again, this is just curiosity about Medallion Fund, nothing else. Is J. Simons a genius? Probably but there is something that doesn't convince me.