There is no published Buffett screener. No list of criteria has ever been released under that name – the phrase comes from financial websites that found the words good for search traffic. What does exist is a set of standards visible across decades of Berkshire’s shareholder letters and acquisition rules, and it can be reconstructed honestly: filter for businesses whose economics survive competition, buy them through something other than a headline, and treat the screen itself as the beginning of work rather than the end of it.
What the filter should actually demand
Free screening tools let you set a handful of conditions at once. These are the ones with real reasoning behind them, plus the failure mode each one hides – because every filter quietly selects for something you didn’t ask for.
| Filter | Why it earns its place | What it silently selects for |
|---|---|---|
| Returns on equity above yield alternatives, several years running | Capital is being reinvested productively | Leverage doing the work – decompose before believing |
| Gross margin broadly flat or rising over five years | Price increases have stuck without losing customers | Companies that simply never cut prices, sometimes because their market shrank anyway |
| Consistent positive operating cash flow | Profits arrive as money rather than invoices | Timing games: stretching payables, delaying maintenance |
| Modest capital intensity (capex small next to operating cash) | Growth doesn’t require standing still and re-buying its own equipment | Asset-light fads whose assets are people, easily lost |
| Long-term debt small relative to earnings | Bad years are survivable | Zero-debt companies run by managements afraid of anything unfamiliar |
| Share count flat or falling over ten years | You aren’t being diluted to fund the story | Buybacks funded by borrowing that flatter per-share figures |
Notice none of these mention price. A screen with no valuation column produces a list of excellent businesses at any price – historically one of the most reliable ways for careful investors to lose money, since quality this obvious is usually expensive and stays that way. The famous line about paying a fair price for a wonderful business is quoted endlessly; the part everyone skips is fair. Valuation judgment belongs in intrinsic-value estimation, and the income statement supplies the inputs whatever method you use.
The trap inside every quality screen
Here is the structural problem nobody puts in the sidebar. Screening on demonstrated quality is screening on history, and markets watch history too. By the time a company has compounded returns on equity for a decade, almost every professional has noticed and priced it. So the same screen reliably hands you two things: genuinely durable businesses, and their elevated prices. Names on those lists in a given year tend to stay there – not because a secret was discovered, but because past success predicts near-future reported results extremely well while predicting future share returns far less well.
Two honest consequences. First, a screen is a candidate generator with a strong bias toward the already-successful; treat its output as a reading list, not a shortlist. Second, the interesting moments for disciplined buyers happen when a durable company hits a temporary, non-fatal problem – the reputational scare, the one bad quarter, the sector-wide panic – and therefore isn’t on anyone’s screen that week. Screening for strength guarantees you’ll miss those, which is why the process needs a written watchlist of businesses you’d actually want, complete with the price at which you’d act, prepared long before the panic arrives.
Testing competitive advantage instead of admiring it
“Strong brand” and “competitive moat” get typed into dropdown boxes as though they were measurements. They aren’t, so interrogate them with questions that have documentary answers:
Who else tried to undercut them, and what happened? Search for competitors that launched aggressive pricing in that market and check whether the incumbent’s margins moved. Pricing power is visible in the accounts over years; brand love is not.
What would actually break this business? If you can’t describe the kill shot, you don’t understand the moat – and someone whose job it is to sell you shares of that company can probably describe it better than you can.
Does it need to keep spending to stay where it is? Compare reinvestment against growth in profits. Businesses feeding a large share of their cash flow back into equipment merely to hold position generate statements rather than wealth; free cash flow makes that gap legible.
Can you summarise how it earns in two sentences? Berkshire has always said no to businesses it can’t evaluate, which sounds humble and is mostly arithmetic: you cannot price what you can’t describe. If your explanation needs four paragraphs of buzzwords, the edge you think you have is probably the marketing budget of whoever wrote them.
Management deserves its own column, and it lives in prose rather than in dropdown menus. Look at what owners did with money during previous hard years – dividend cuts, emergency share sales, acquisitions announced just after peaks – all disclosed somewhere in the annual reports if you read the older ones rather than the current glossy letter. Behaviour under pressure beats strategy decks every time.
A sequence that works without pretending to be Buffett
- Screen coarsely for survivability: profitability, cash generation, sane debt. Anything failing gets dropped fast.
- Pick a few you can genuinely explain and go to primary sources – filings on SEC EDGAR and the company’s own investor-relations pages. Free, unfiltered, boring, correct more often than summaries.
- Write a falsifiable sentence: you expect a specific result by a specific date because of a specific mechanism, and you’re wrong if this thing happens. If you can’t write that sentence, you’re not early – you’re uninformed.
- Decide your action price now, in calm conditions. Waiting until a quote looks frightening to decide what you’d have wanted means deciding under the influence of the number you’re reacting to, which is precisely the behaviour Mr. Market exists to teach against.
- Default the majority of your money to the boring alternative – broad index funds at negligible cost – and put only learning-sized sums into hand-picked names. Whatever the screen says, the expected return on your study time is higher there than on beating professionals at their own game.
This is educational commentary on how investment screens work, not financial advice or a recommendation to buy any company; no screen can eliminate risk, screened names carry their own version of ordinary market risk, and every one of them can lose value including the perennial favourites that appear on lists like these every single year.