Comparing 48 vs 49 investment principles across 16 common topics
Use this page to compare David Swensen and Jim Simons 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: Institutional Investing, Alternative Assets, Diversification, Long-term Orientation
David Frederick Swensen (January 26, 1954 – May 5, 2021) was an American investor and the chief investment officer at Yale University from 1985 until his death. He transformed Yale's endowment from $1...
Investment Style: Quantitative Trading, Algorithmic Strategies, Statistical Arbitrage, Machine Learning
James Harris Simons (April 25, 1938 – May 10, 2024) was an American mathematician and hedge fund manager. He founded Renaissance Technologies in 1982, which became one of the most successful and secre...
Both David Swensen and Jim Simons share principles on these topics.
| Topic | David Swensen | Jim Simons |
|---|---|---|
| Circle of Competence | 3 principles | 3 principles |
| Long-Term Investing | 3 principles | 3 principles |
| Business Quality | 3 principles | 3 principles |
| Market Psychology | 3 principles | 3 principles |
| Buying Principles | 3 principles | 3 principles |
| Mental Models | 3 principles | 3 principles |
| Risk Management | 3 principles | 3 principles |
| Business Judgment | 3 principles | 3 principles |
| Stock Picking | 3 principles | 3 principles |
| Investment Philosophy | 3 principles | 3 principles |
| Selling & Review | 3 principles | 3 principles |
| Margin of Safety | 3 principles | 3 principles |
| Thinking Methods | 3 principles | 4 principles |
| Investment Psychology | 3 principles | 3 principles |
| Life Wisdom | 3 principles | 3 principles |
| Value Assessment | 3 principles | 3 principles |
David Swensen has 48 investment principles and Jim Simons has 49. They share insights on 16 common topics, yet each brings unique perspectives and methodologies that complement each other.
David Swensen and Jim Simons 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. David Swensen with 48 principles and Jim Simons with 49 principles cover complementary aspects of investing. Studying both provides a more complete investment framework.