💸 Savvy FundsOpen the app

👑 Legends of Investing · Lesson 11 of 13 · 9 min

Jim Simons — The Math Genius Who Beat Wall Street

🧮 A math professor ignored every rule of investing, hired physicists instead of MBAs, and built a fund that averaged 66% a year for 30 years — the best record in history. Then he closed it to outsiders, because the surest way to keep a money machine is to not share it.

💡 Key idea

Patterns in data, ruthlessly exploited, beat human intuition.

🧠 Why it matters

Simons was a top mathematician who broke codes for the NSA, then founded Renaissance Technologies in 1982. His Medallion Fund used pure quantitative models — no gut, no story, no narratives. Just patterns in data. It's the most successful investment vehicle of all time.

🌍 In the real world

🤖 Simons hired physicists, mathematicians, and code-breakers — no MBAs, no finance backgrounds. They built models that found tiny statistical edges in markets, repeated millions of times. Medallion has been closed to outside investors since 1993 because the strategies have limited capacity. Insiders compound at 66%/year before fees.

📌 Takeaways

  • Data > narrative
  • Tiny edges + huge volume = massive returns
  • Best fund in history (closed to outsiders)

✅ Test yourself

What's Renaissance Technologies' edge?
  1. Buying companies they understand
  2. Pure quantitative models finding statistical patterns
  3. Following analyst recommendations
  4. Trading on insider info

Answer: B · Pure quantitative models finding statistical patterns

Renaissance uses pure math — patterns, models, statistical edges. No narrative-based investing. No gut decisions.

What's the Medallion Fund's average annual return?
  1. 10%
  2. 20%
  3. 66%
  4. 100%

Answer: C · 66%

Medallion has averaged ~66%/year before fees over 30+ years. After fees (5% management + 44% performance), still around 40%. Best ever.

Why can't you invest in Medallion?
  1. It's a scam
  2. It's been closed to outside investors since 1993 — only employees can invest
  3. It requires $1 billion minimum
  4. It only takes hedge funds

Answer: B · It's been closed to outside investors since 1993 — only employees can invest

Medallion's strategies have limited capacity. To preserve returns, they closed it to outsiders — only Renaissance employees can invest.

Start this lesson free →

Quiz, XP and streaks in the app. No sign-up needed.

More in Legends of Investing