Comparing 49 vs 54 investment principles across 16 common topics
Use this page to compare Jim Simons and Ray Dalio 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: 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...
Investment Style: Global Macro, Risk Parity, Systematic Trading, Diversification
Raymond Thomas Dalio (born August 8, 1949) is an American billionaire investor and hedge fund manager. He founded Bridgewater Associates in 1975, which became the world's largest hedge fund with over ...
Both Jim Simons and Ray Dalio share principles on these topics.
| Topic | Jim Simons | Ray Dalio |
|---|---|---|
| Buying Principles | 3 principles | 3 principles |
| Investment Philosophy | 3 principles | 3 principles |
| Thinking Methods | 4 principles | 6 principles |
| Risk Management | 3 principles | 3 principles |
| Value Assessment | 3 principles | 3 principles |
| Business Quality | 3 principles | 3 principles |
| Selling & Review | 3 principles | 3 principles |
| Stock Picking | 3 principles | 3 principles |
| Business Judgment | 3 principles | 3 principles |
| Circle of Competence | 3 principles | 3 principles |
| Market Psychology | 3 principles | 3 principles |
| Life Wisdom | 3 principles | 6 principles |
| Investment Psychology | 3 principles | 3 principles |
| Mental Models | 3 principles | 3 principles |
| Margin of Safety | 3 principles | 3 principles |
| Long-Term Investing | 3 principles | 3 principles |
Jim Simons has 49 investment principles and Ray Dalio has 54. They share insights on 16 common topics, yet each brings unique perspectives and methodologies that complement each other.
Jim Simons and Ray Dalio 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. Jim Simons with 49 principles and Ray Dalio with 54 principles cover complementary aspects of investing. Studying both provides a more complete investment framework.