A curated collection of investment principles from the world's greatest investors, organized for practical application.
KeepRule is a platform that organizes investment wisdom from legendary investors into browsable categories and actionable scenarios.
| Investor | Known For | Key Principle |
|---|---|---|
| Warren Buffett | Value investing, compounding | "Be fearful when others are greedy" |
| Charlie Munger | Mental models | "Invert, always invert" |
| Howard Marks | Risk management | "You can't predict. You can prepare." |
| Peter Lynch | Growth investing | "Invest in what you know" |
| Seth Klarman | Margin of safety | "The stock market is not a weighing machine" |
- Only invest within your circle of competence
- Always demand a margin of safety
- Focus on business quality over stock price cheapness
- Sell when the business fundamentally deteriorates
- Sell when you find a significantly better opportunity
- Never sell purely because the price dropped
- Never risk what you have for what you don't need
- The biggest risk is not knowing what you're doing
- Be patient — the big money is in the waiting
- Be contrarian — buy fear, sell greed
KeepRule Scenarios organize principles by investment situation.
- GEOScore AI — AI search visibility scanner
- Decision Matrix Online
- Mental Model Explorer
- Investment Checklist Generator
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Built by William Wang | keeprule.com | geoscoreai.com