Comparing 48 vs 77 investment principles across 16 common topics
Use this page to compare John Bogle 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: Index Investing, Passive Management, Low-Cost Investing, Buy and Hold
John Clifton "Jack" Bogle (May 8, 1929 – January 16, 2019) was an American investor, business magnate, and philanthropist. He founded The Vanguard Group in 1975 and created the first index mutual fund...
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 John Bogle and Warren Buffett share principles on these topics.
| Topic | John Bogle | Warren Buffett |
|---|---|---|
| Mental Models | 3 principles | 3 principles |
| Investment Psychology | 3 principles | 6 principles |
| Thinking Methods | 3 principles | 3 principles |
| Market Psychology | 3 principles | 4 principles |
| Selling & Review | 3 principles | 3 principles |
| Business Judgment | 3 principles | 4 principles |
| Margin of Safety | 3 principles | 3 principles |
| Value Assessment | 3 principles | 6 principles |
| Life Wisdom | 3 principles | 4 principles |
| Business Quality | 3 principles | 6 principles |
| Investment Philosophy | 3 principles | 3 principles |
| Long-Term Investing | 3 principles | 10 principles |
| Stock Picking | 3 principles | 3 principles |
| Buying Principles | 3 principles | 6 principles |
| Risk Management | 3 principles | 9 principles |
| Circle of Competence | 3 principles | 4 principles |
John Bogle 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.
John Bogle 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. John Bogle with 48 principles and Warren Buffett with 77 principles cover complementary aspects of investing. Studying both provides a more complete investment framework.