How Jim Simons revolutionised investing

He may also have been the best of the lot. “There is one GOAT [greatest of all time]. His name was Jim Simons,” as Clifford Asness, co-founder of AQR, a hedge fund, put it to the Wall Street Journal. The flagship Medallion fund of Renaissance Technologies, Mr Simons’s firm, generated a whopping $100bn in trading profits over the three decades to 2018. Its 66% average annual return was even more astounding. No other big fund came close.