James Simons

“The great thing about science is, your bad ideas don’t count against you. Trading is a little bit different. Your bad ideas can lose you money.”

Renaissance Technologies Corp. founder James Simons is a man of science. He is also one of the greatest investors of our time. An award-winning mathematician and onetime code breaker for the National Security Agency, Simons has developed sophisticated computer programs to identify price anomalies — used to trade anything, anywhere, anytime — delivering a nearly 40 percent annualized return since he launched his now $9 billion Medallion Fund in 1988.

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