Rate any stock using the same criteria legendary investors like Warren Buffett use. Get an instant score and see how your potential investment measures up.
- Score stocks across multiple dimensions (moat, management, valuation, etc.)
- Based on principles from Buffett, Munger, and Graham
- Visual score breakdown
- Mobile-friendly design
Built by KeepRule - AI-powered investment principles platform.
MIT
- Investor Personality Quiz - Which legendary investor are you?
- Investment Scorecard - Rate any stock like Buffett
- Portfolio Health Check - Grade your portfolio
- Fear & Greed Calculator - Market sentiment tool
- Decision Tree - Buy/Hold/Sell guidance
- Investment Calculators - Compound interest, retirement, DCA & more
- 30-Day Challenge - Transform your investing
- Free API - 100 principles, 20 authors
- NPM Package -
npm install keeprule - PyPI Package -
pip install keeprule - Chrome Extension
- Discord Bot
- Embeddable Widget
- Master Guides - Buffett, Munger, Graham & more
- Free Ebook - 100 Investment Principles
- Email Course - 7-day Buffett course
- Infographics - Visual investing guides
- Investment Glossary - 100 terms every investor should know
- Annual Report - State of Investment Principles 2026
- SEO Blog - Deep-dive investing articles
- Platform Comparisons - KeepRule vs alternatives
Built by William Wang | All Tools