We Study Billionaires
We Study Billionaires

RWH050: The Intelligent Investor w/ Jason Zweig

In today’s episode, William Green chats with Jason Zweig about his updated & revised edition of Benjamin Graham’s The Intelligent Investor, which Warren Buffett describes as “by far the best book on investing ever written.” Jason, who also writes the Wall Street Journal’s Intelligent Investor co

Featured Speakers

Stig Brodersen HostJason Zweig Guest

Topics Discussed

Episode Summary

Executive Summary: Jason Zweig discusses his 75th-anniversary revision of Benjamin Graham’s The Intelligent Investor, arguing that its core lessons—business ownership, speculation vs. investing, Mr. Market, and margin of safety—remain essential. He explains why disciplined individual investors can still outperform by avoiding Wall Street’s frenetic game, using indexing as a base, and acting with humility amid market uncertainty and life’s unpredictability.

Main Topics: Revising The Intelligent Investor (Priority: 5/5): Zweig explains why updating Graham’s classic was both an honor and burden, and how he rebuilt the commentary from scratch to make the book relevant to modern investors without rewriting Graham himself. Core Graham principles (Priority: 5/5): The conversation centers on timeless ideas: stocks as businesses, investing vs. speculating, Mr. Market, and the importance of ignoring short-term price noise unless it suits your portfolio. Individual investors vs. professionals (Priority: 5/5): Zweig argues that disciplined individuals now have structural advantages—low costs, flexibility, no client pressure—while institutions face trading and implementation constraints that hinder performance. Margin of safety and indexing (Priority: 5/5): He stresses Graham’s margin of safety as the central investment concept, then connects it to modern diversification and index funds as an efficient base for most investors. The difficulty of finding superstocks (Priority: 4/5): The discussion weighs the allure and rarity of identifying a tiny set of exceptional winners, noting that stock returns are highly skewed and skill is hard to separate from luck. Value investing, growth, and changing market structure (Priority: 4/5): Zweig and Greene debate whether modern hyper-growth firms have altered Graham’s assumptions about mean reversion, with reference to tech platforms, moats, and the limits of traditional value investing. Life lessons from Graham, Buffett, and Munger (Priority: 4/5): The episode closes on broader lessons: intellectual humility, generosity, teaching, walking, work-life balance, and the importance of sustaining relationships while pursuing excellence.

Key Arguments: Graham’s framework remains valid because investors still face the same psychological traps, even if markets and technology have changed. The best way for most people to invest is to think like owners of businesses, not traders of price movements. Speculation is acceptable only if it is recognized honestly as speculation and financed with money one can afford to lose. Mr. Market is useful as a metaphor because market prices are often emotionally driven and should be used only when they offer favorable opportunities. Individual investors can now outperform professionals more easily than in the past because trading is cheap, portfolio construction is flexible, and they are not forced to trade. Most investors should use low-cost index funds as a core holding, then make concentrated active bets only where they have genuine knowledge or edge. Margin of safety is the central investment idea because it protects against errors in valuation, uncertainty, and the unknowability of the future. The challenge of identifying future superstocks is real because a tiny minority of stocks drive most long-term market gains, and it can take decades to distinguish skill from luck. Traditional value investing may face a more difficult environment today due to the rise of scalable, winner-take-all technology businesses. Humility matters more than certainty: good investors acknowledge how much they do not know and avoid overconfidence. Graham, Buffett, and Munger show that teaching, generosity, and perspective are as important as returns. Work quality often depends on habits like walking, focused routines, and creating conditions for subconscious problem-solving.

Data Points: Years since first edition of The Intelligent Investor: 75 years - The book’s anniversary edition is being released 75 years after the original publication. Benjamin Graham’s age at Columbia entry: 17 - Graham entered Columbia University at age 17 after an admissions paperwork error. Benjamin Graham’s graduation time: 2.5 years - He graduated from Columbia in two and a half years while working nights. Academic job offers before graduation: 3 - Graham was offered faculty positions in philosophy, English, and mathematics. Graham’s age when he published on calculus education: 23 - He published an article in the American Mathematical Journal at 23. Graham-Newman performance: About 5 percentage points per year for 20 years - Buffett noted Graham’s published track record understated the fund’s true outperformance, especially after Geico was distributed to shareholders. Professional fund managers underperforming: Two-thirds to 80% - Zweig says roughly this share of active managers underperform the S&P 500 and often other benchmarks. Japanese market move on August 5: Down over 12% in one day - Used as an example of Mr. Market’s irrational swings. Japanese market rebound the next day: Up 10% - Illustrates rapid reversals that have no relation to underlying business value. Graham’s mutual fund universe in 1970: 356 mutual funds with $50 billion in assets - Used to contrast with the modern fund landscape. Current U.S. mutual fund count: 6,970 - Zweig cites the expansion of the mutual fund universe. Current U.S. mutual fund assets: $18.8 trillion - Current mutual fund assets cited in the discussion. Worldwide mutual fund assets: $63 trillion - Zweig notes global mutual fund assets as a measure of the scale of the industry. Longleaf Partners Fund 10-year return: 4.03% annualized - Example showing how even high-quality active managers can lag badly over time. Longleaf Partners Fund 10-year S&P 500 return: 12.98% annualized - Benchmark cited alongside Longleaf’s 10-year result. Bessembinder sample size: About 28,000 U.S. stocks - Study of shareholder wealth enhancement from 1926 to 2022. Stocks that lost money over full history: Nearly 59% - Bessembinder found most stocks underperformed cash-like outcomes over their lifetimes. Stocks responsible for market wealth creation: 966 stocks, about 3% - These few stocks accounted for the cumulative net gain of the entire U.S. stock market. Graham’s family-office style involvement with Geico: About one-fifth of portfolio - Graham concentrated a meaningful share of his portfolio in Geico, which became a major source of wealth.

Pivotal Quotes: "The true investor scarcely ever is forced to sell his shares, and at all other times, he is free to disregard the current price quotation." — Benjamin Graham: Read aloud from chapter 8 as the passage Zweig calls perhaps the most important paragraph ever written about investing. "The only book any anyone should ever write is the book that's already inside of you, sort of banging on your rib cage from the inside, trying to get saying, let me out." — Jason Zweig: He describes his filter for choosing major writing projects, including this anniversary edition. "Sheer playfulness and deadly seriousness are my closest friends." — Philip Roth (quoted by Jason Zweig): Zweig uses this line to describe the right mindset for serious creative work.

Implications: For listeners, the message is to build portfolios around humility, patience, and low costs: own the market broadly, then only make active bets where you truly have an edge. For the industry, it reinforces how hard sustained outperformance remains.

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About We Study Billionaires

We interview and study famous financial billionaires, including Warren Buffett, Ray Dalio, and Howard Marks, and teach you what we learn and how you can apply their investment strategies in the stock market. We Study Billionaires is the largest stock investing podcast show in the world with 180,000,000+ downloads and is hosted by Stig Brodersen, Preston Pysh, William Green, Clay Finck, and Kyle Grieve. This podcast also includes the Richer Wiser Happier series hosted by best-selling author Wi...

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