Joel Greenblatt

What they argue

Joel Greenblatt is a thinker who focuses on the mechanics of the stock market as a mechanism for pricing businesses rather than a casino for predicting price movements. He works in the territory of value investing, advocating for a disciplined, numbers-driven approach to identify high-quality companies trading at a discount.

1. The Difference Between Investing and Speculating

   Investing is the purchase of a piece of a business with the expectation of a return based on the business's actual performance. Speculating is betting on price movements.

   From The Big Secret for the Small Investor (book)

   • Says much the same Benjamin Graham — Investment vs. SpeculationAn investment is an operation that, upon thorough analysis, promises safety of principal and an adequate return. Speculation is buying something in the hope that the…The Intelligent Investor

2. The Magic Formula

   This is a systematic way to rank stocks by combining two metrics: Earnings Yield and Return on Capital. You multiply these two numbers together to create a score where a higher score indicates a more attractive investment.

   From The Little Book That Beats the Market (book)

3. The Value Screening Framework

   To find 'genius' level opportunities, investors should use a systematic screening process to find companies trading at a discount. This involves using metrics like Earnings Yield (Earnings Per Share / Price) to identify undervalued businesses.

   From You can be a stock market genius (book)

   • A related idea Robert G. Hagstrom — The Moat Assessment ChecklistInvestors should evaluate a company's sustainable competitive advantage before looking at its stock price. This includes checking for Brand Power, which allows for…The Warren Buffet way
   • A related idea John C. Bogle — Cost-First Evaluation FrameworkWhen considering a new investment or fund, an investor should look at the friction rather than the projected returns first. This involves identifying the simplest,…John Bogle on Investing

4. The 'Business Owner' Audit

   Before buying any stock, investors should run a mental checklist to ensure they are thinking like an owner rather than a gambler. One specific test is the 'Store' Test: asking if they would still want to own the business if they couldn't sell the stock.

   From The Big Secret for the Small Investor (book)

   • Says much the same Howard Marks — The 'Why' AuditBefore committing capital, an investor must be able to answer specific questions regarding the economic moat and structural advantages of an asset. If these cannot be…The Most Important Thing
   • A related idea Benjamin Graham — The Solvency & Liquidity AuditInvestors should use a checklist before considering any investment to ensure the company won't collapse under its own weight. This includes checking the Current Ratio,…The interpretation of financial statements

5. Market Inefficiency and Emotional Bias

   The stock market is frequently inefficient because investors are often driven by emotion, herd behavior, and a focus on short-term price fluctuations. Because people overreact to news and hype, they often ignore the actual fundamentals of a business.

   From The Little Book That Still Beats the Market (book)

   • Says much the same Benjamin Graham — Price vs. ValueBecause humans are governed by fear and greed, the market price of a stock will constantly fluctuate wildly away from its actual worth. An intelligent investor must…The Intelligent Investor
   • Says much the same Robert J. Shiller — Information Asymmetry and PhoolsFinancial markets are often driven by 'phools' who succumb to overconfidence and herd behavior, creating systemic bubbles. This occurs because markets are not always…Phishing for Phools

6. The 'Growth' Trap

   Greenblatt illustrates the allure of 'hot' tech stocks that everyone is talking about. He highlights how these can lead investors to ignore the importance of finding 'wonderful' companies at 'bargain' prices.

   From The Little Book That Beats the Market (book)

Every idea names the summary it came from. Written by a local model from this mind’s own work, never from memory.

Books 4

• The Big Secret for the Small Investor — Successful investing is not about predicting the future; it is about identifying undervalued, high-quality businesses…
• The Little Book That Beats the Market — Successful investing is not about predicting the future; it is about identifying undervalued, high-quality companies…
• You can be a stock market genius — Successful investing is not about predicting the future or outsmarting the market; it is about identifying and buying…
• The Little Book That Still Beats the Market — A systematic, numbers-driven approach to value investing that identifies high-quality companies at bargain prices…