Free Warren Buffett stock screener
Market Lens scores any company 0–100 against the four criteria Warren Buffett is known for — circle of competence, moat, a fortress balance sheet, and margin of safety — and shows the reasoning behind every number. Free, no sign-up. It’s a research starting point, not a recommendation to buy.
Market Lens is not affiliated with, endorsed by, or sponsored by Warren Buffett or Berkshire Hathaway Inc. “Buffett-style” and “the criteria Buffett is known for” describe a well-known value-investing approach; they do not imply any association with Mr. Buffett.
Every stock is rated on the same four questions Buffett is famous for asking. Each one gets its own 0–10 sub-score with the numbers behind it, and the four are blended (25% / 30% / 25% / 20%) into the 0–100 total — a weighted blend, not a pass/fail sequence.
Is this a business you can actually understand? Market Lens uses a sector and industry lookup that rewards predictable business types (beverages, railroads, insurance) over ones whose future is anyone’s guess (biotech, semiconductors). It rates the kind of business, not your expertise.
Does the company have a durable edge that keeps competitors out? This scores net profit margin, return on equity, gross margin, and revenue growth, plus a few points for company size — the fingerprints of pricing power.
Could the business survive a bad year? This weighs debt-to-equity, the current ratio, free cash flow, operating cash flow, and profit margin — whether it owes too much, can pay its short-term bills, and funds itself.
Is the price sensible versus what the business looks worth? This compares price to an intrinsic estimate that averages the Graham Number (where it applies) with a growth-adjusted fair-P/E value. The DCF is shown separately and is not an input.
A real moat shows up in the numbers. Market Lens scores it from profit margins, return on equity, revenue growth, and scale — the signs of an edge competitors can’t easily copy — and shows return on invested capital, Net Income ÷ (Equity + Debt), alongside as a quality check.
Debt-to-equity, the current ratio, and free and operating cash flow answer one question: could this business absorb a rough year without breaking? A fortress balance sheet scores high; a fragile one gets flagged.
The Graham Number (where it fits) and a growth-adjusted fair-P/E value combine into an intrinsic estimate, and the margin of safety shows whether today’s price looks cheap, fair, or stretched against it. A bear/base/bull DCF sits alongside as a separate panel.
Enter a ticker. Type any U.S.-listed company (for example KO, AAPL, or PG) and the four-criteria score is generated on the spot.
Read each pillar, not just the total. A strong overall score built on a weak balance sheet means something different than one built on price. The per-criterion breakdown tells you which.
Treat it as a starting point. A high score is a reason to dig deeper, not a signal to trade. Everything here is an estimate for your own research — not advice, and not a prediction of where the price will go.
It is a tool that rates a company on the qualities Warren Buffett is known for looking for — a simple, understandable business, a durable competitive moat, a strong balance sheet, and a sensible price. Market Lens turns those four ideas into a weighted 0–100 checklist score with the reasoning shown, so you can see why a stock scores the way it does.
It blends four sub-scores (each 0–10) with fixed weights into a 0–100 composite: circle of competence 25% (a sector and industry lookup), moat 30% (margins, return on equity, revenue growth, and company size), financial strength 25% (debt-to-equity, current ratio, and cash flow), and margin of safety 20% (price versus an intrinsic estimate built from the Graham Number and a fair-P/E value). Each sub-score is shown separately, not hidden behind a single grade, and the result is labeled Meets criteria, Watch, or Fails criteria. See the Methodology page for the full breakdown.
No. It shows you how a business scores on quality and value and explains the numbers behind it. It never names a "best stock to buy." It scores stocks against a rules-based checklist and labels them Meets criteria, Watch, or Fails criteria. It does not tell anyone to buy or sell, it does not predict prices, and it is not investment advice. The output is a starting point for your own research — the decision is always yours.
Yes. The full four-criteria score and the reasoning behind it are free, with no account required.
The Graham Number is only meaningful for asset-heavy, defensive businesses. Market Lens deliberately excludes it for Technology, Communication Services, Healthcare, and Consumer Cyclical stocks, where it gives misleading results — so the margin-of-safety read stays honest.