All Traders
Portrait of Jim Simons

1938-2024

Jim Simons

The Quant King

Quantitative, data-driven approach to markets. Simons applies advanced mathematics, statistical arbitrage, and machine learning to find patterns invisible to human traders.

Trading Strategy

High-frequency quantitative trading using mathematical models. The Medallion Fund uses pattern recognition, mean reversion, and statistical arbitrage across thousands of positions.

Key Principles

  • Past patterns predict future behavior with the right models
  • Hire the best scientists and mathematicians, not traders
  • Eliminate human emotion from trading decisions
  • Diversify across thousands of small, uncorrelated bets
  • Data is the key - let the numbers speak