What it is
A composite score running every stock through Buffett's actual public framework - published in his shareholder letters, his Columbia lectures, and decades of Berkshire Hathaway annual reports - and asking: how many of the rules does this stock pass?The rules cluster into five pillars: 1. Moat - does the business have a structural competitive advantage? 2. Durability - will customers want this product in 10+ years? 3. Management - is capital being allocated well? (buybacks, debt discipline, no empire-building) 4. Balance Sheet - could this business survive a recession without dilution or distress? 5. Valuation - at the current price, is the implied future return attractive?
How to read it
- 80–100: passes most of Buffett's checklist. Worth a hard look.
- 65–79: passes the quality bars but probably stretched on valuation, OR a fair-priced business with a moderate quality concern.
- 50–64: mixed. Failing on at least one major pillar.
- < 50: doesn't fit Buffett's criteria. May still be a great investment under a different framework (Lynch, Greenblatt) - just not this one.