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Benjamin Graham

Origin of Relationship

Warren Buffett first encountered Benjamin Graham in 1950 after reading the newly published book The Intelligent Investor, subsequently enrolling at Columbia University to study under Graham, who later hired him as an analyst at Graham-Newman (1954–1956).

Major Milestones

  • 1934: Graham co-authors Security Analysis with David Dodd, establishing the academic foundation for quantitative security analysis.
  • 1949: Publishes The Intelligent Investor, which Buffett describes as "by far the best book on investing ever written."
  • 1950–1951: Buffett attends Graham's lectures at Columbia Business School, receiving the only "A+" Graham ever awarded.
  • 1954–1956: Buffett works as an analyst at Graham-Newman Corporation, learning the strict application of "cigar butt" asset-bargain investing and arbitrage workouts.
  • 1976: Graham passes away at age 82. Buffett writes a memorial tribute in the 1976 Letter, praising his generosity of spirit and intellectual integrity.
  • 1984: Buffett delivers his famous "Superinvestors of Graham-and-Doddsville" speech at Columbia to celebrate the 50th anniversary of Security Analysis, proving that Graham's students systematically outperformed the market.
  • 1990: Buffett explicitly resurrects Graham's three-word secret to sound investing, Margin of Safety, to critique the LBO and junk bond mania of the late 1980s. 1990 Letter
  • 2022: Buffett quotes Graham's classic voting machine vs. weighing machine framework at the 2022 Meeting to describe market behavior during tech bubble crashes.

Strategic Importance

Benjamin Graham laid the permanent intellectual foundation for Berkshire Hathaway's investment philosophy. He provided Buffett with three core pillars that were never abandoned:

  1. Mr. Market: The psychological model of the market as an emotional partner whose manic-depressive price quotes should be exploited rather than followed.
  2. Margin of Safety: The discipline of buying assets at a discount to intrinsic value to protect against errors in judgment.
  3. A Stock as Fractional Ownership: The mental model of treating shares as proportional stakes in actual businesses, not trading slips.

While Buffett and Munger eventually transitioned from Graham's quantitative "cigar butt" style (paying less than net current asset value) to buying wonderful businesses at fair prices (franchise moats), Buffett repeatedly emphasized that Graham's core principles remained non-negotiable.

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