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Mohnish Pabrai: 9 Principles to Join the Top 1% of Investors

In episode 827 of My First Million, Shaan Puri sits down with billionaire value investor Mohnish Pabrai to break down the mental models that made him a top 1% investor. The conversation covers 9 principles including 'the mistress is always hotter than the wife,' introducing randomness into life, and waiting for fat pitches.

May 23, 2026
2 min read
Source: My First Million
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In episode 827 of the My First Million podcast, Shaan Puri interviewed billionaire value investor Mohnish Pabrai to dissect the mental models behind his success. Pabrai outlined 9 key investment principles, including: 'the mistress is always hotter than the wife' (new opportunities seem better than what you own), the need to introduce randomness into life, and avoiding Excel for valuations.

The Nine Principles

  • The mistress is always hotter than the wife: Don't be fooled by new opportunities.
  • Introduce randomness into your life: Try new things to broaden your horizons.
  • Humans are poor at copying: Don't imitate without understanding.
  • Take a simple idea seriously: Focus on one idea and master it.
  • Be an inch wide and a mile deep: Specialize in a narrow field.
  • Never use Excel: Complex valuations can mislead.
  • Wait for fat pitches: Only invest when the opportunity is clear.
  • The stock market is like a church with a casino: Most people gamble.
  • The inner scorecard: Focus on your own performance, not others' opinions.

Berkshire Hathaway Outlook

Pabrai discussed the future of Berkshire Hathaway (BRK-B) after Warren Buffett, noting the company's strong management team. He also shared his story of paying $650,000 for a lunch with Buffett and how it impacted his career.

Investment Advice

Pabrai covered how to beat the index, his best investment ever, and his top stock picks for 2026. He concluded with advice: 'Study the greatest investors and apply their principles.'

Frequently Asked Questions

The principles include: the mistress is always hotter than the wife, introduce randomness into your life, humans are poor at copying, take a simple idea seriously, be an inch wide and a mile deep, never use Excel, wait for fat pitches, the stock market is like a church with a casino, and the inner scorecard.

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This article was rewritten in Wrqti's editorial style based on information from the original source above. Content is informational only — not investment advice.