#387 Jim Simons Built The World’s Greatest Money-Making Machine

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May 1, 2025

Jim Simons, a former mathematician, revolutionized finance by founding a hedge fund filled with top-notch scientists instead of traditional financiers. His groundbreaking approach combined advanced mathematics with data-driven trading strategies. The podcast delves into his relentless persistence in the face of skepticism, the early challenges of launching his fund, and the importance of innovative collaboration in achieving success. Simons’ story is a testament to the power of unconventional thinking and the relentless pursuit of excellence.

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Simons' Primal Therapy Break

At 33, Simons took a sabbatical to undergo primal therapy, reflecting inner conflicts.
The therapy involved confronting repressed pain through primal screaming.

Fired for Vietnam Protest

Simons was fired from a prestigious defense job for protesting the Vietnam War openly.
This dismissal pushed him toward gaining control over his future career path.

Do Something New to Win

To succeed, do something new and don't run with the pack.
Simons knew fast runners lose; unique problems give a winning chance.

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Jim Simons never took a single class on finance, wasn’t interested in business, and didn’t start trading full time until he was 40. The company he founded — Renaissance Technologies — has made over $100 billion in profits.

Starting out with the heretical belief that there was a hidden structure in financial markets, Jim decided to staff his “crazy hedge fund” with mathematicians, computer scientists, and physicists. He went to great lengths to collect more historic financial data than anyone else, spent a lot of time recruiting “killers” (people with single minded focus that wouldn’t quit), invested heavily in computers (and the people who ran them), and designed the most collaborative work environment.

Jim was a world-class mathematician, code breaker, exceptional manager of people with exceptional minds, a genius in system design, and deeply understood the power of incentives. He was also incapable of giving up, willing to endure a decade of struggle and pain, and hell-bent on doing something “historic” with his life.

Jim Simons lived a life defined by persistence, unconventional thinking, and an unwavering pursuit of excellence. Studying his life and work is time well spent. This episode is what I learned from rereading The Man Who Solved the Market: How Jim Simons Launched the Quant Revolution by Gregory Zuckerman.

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