Comparing 48 vs 77 investment principles across 16 common topics
Use this page to compare Joel Greenblatt and Warren Buffett by decision process, not by performance claims. Start with each investor’s style summary, then scan the 16 shared topics to see where their principles overlap. If you are new, begin with the common topics; if you have a specific problem, jump to the topic table and open the related rule pages. Next, use the unique-topic lists to choose a framework that fits your current question (risk control, valuation discipline, thesis review, or behavior). Open 2–3 linked principle pages and write one “what would change my mind?” trigger in your journal. Educational only.
Investment Style: Value Investing, Special Situations, Quantitative Value, Systematic Approach
Joel Greenblatt (born December 13, 1957) is an American investor, hedge fund manager, and author. He is the founder of Gotham Capital, which achieved annualized returns of approximately 40% from 1985 ...
Investment Style: Value Investing, Long-term Holding, Concentrated Portfolio, Quality Focus
Warren Edward Buffett (born August 30, 1930) is an American businessman, investor, and philanthropist. He is the chairman and CEO of Berkshire Hathaway, a multinational conglomerate holding company. ...
Both Joel Greenblatt and Warren Buffett share principles on these topics.
| Topic | Joel Greenblatt | Warren Buffett |
|---|---|---|
| Value Assessment | 3 principles | 6 principles |
| Selling & Review | 3 principles | 3 principles |
| Life Wisdom | 3 principles | 4 principles |
| Investment Psychology | 3 principles | 6 principles |
| Risk Management | 3 principles | 9 principles |
| Circle of Competence | 3 principles | 4 principles |
| Margin of Safety | 3 principles | 3 principles |
| Long-Term Investing | 3 principles | 10 principles |
| Mental Models | 3 principles | 3 principles |
| Investment Philosophy | 3 principles | 3 principles |
| Stock Picking | 3 principles | 3 principles |
| Thinking Methods | 3 principles | 3 principles |
| Business Judgment | 3 principles | 4 principles |
| Business Quality | 3 principles | 6 principles |
| Market Psychology | 3 principles | 4 principles |
| Buying Principles | 3 principles | 6 principles |
Joel Greenblatt has 48 investment principles and Warren Buffett has 77. They share insights on 16 common topics, yet each brings unique perspectives and methodologies that complement each other.
Joel Greenblatt and Warren Buffett share principles across 16 investment topics. These common themes represent the most fundamental ideas in investing, approached from different but complementary angles.
Both masters offer invaluable wisdom. Joel Greenblatt with 48 principles and Warren Buffett with 77 principles cover complementary aspects of investing. Studying both provides a more complete investment framework.