GurusTheir tests. Today's market.

Graham and others wrote their tests down.

Counted 11 Sep 2026. Prices of 10 Sep 2026.

Market count

  • Edward Altman

    Safe zone> 2.99A quarter to a half of the 2,861 US-listed companies with a Z-score fall in it.

    A bankruptcy score from 1968: five ratios, weighted and summed, fitted on manufacturers that went bankrupt or did not.

    • Five ratios, each scaled by assets or liabilities, weighted and added into one score.
    • Zones commonly quoted: below 1.81 distress, above 2.99 safe, grey between.
    • Fitted on publicly traded manufacturers, not on banks, utilities or service firms.

    Source: Journal of Finance, 1968.

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  • Messod Beneish

    Flag zone> -1.78A tenth to a quarter of the 3,030 US-listed companies with an M-score fall in it.

    A score built from eight measures on two years of accounts, estimated to flag likely earnings manipulators.

    • Eight measures: receivables, margin, asset quality, sales growth, depreciation, overheads, debt, accruals.
    • Commonly quoted cut-off: a score above minus 1.78 flags a likely manipulator.
    • Fast, honest growth can raise the score too.

    Source: Financial Analysts Journal, 1999.

  • Benjamin Graham

    Current ratio≥ 2A quarter to a half of the 3,645 US-listed companies with a current ratio meet it.

    Seven tests for a defensive investor: size, balance sheet, earnings, dividends, growth and two on price.

    • A current ratio of at least 2, and long-term debt within net current assets.
    • Some earnings in each of ten years, and twenty years of dividends.
    • A price at most 15 times three-year earnings, and 1.5 times book.

    Source: The Intelligent Investor, 1973, ch. 14.

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  • Joseph Piotroski

    High score≥ 8Fewer than a twentieth of the 3,630 US-listed companies with an F-score fall in it.

    A nine-test score, built from a company's own filings, for sorting cheap stocks into stronger and weaker ones.

    • Nine yes-or-no tests: profit, cash, debt, liquidity, new shares, margin, turnover.
    • He called a score of 8 or 9 high, and 0 or 1 low.
    • He tested it only inside the fifth of stocks cheapest against book value.

    Source: Journal of Accounting Research, 2000.

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  • Tweedy, Browne

    Price to book≤ 1A tenth to a quarter of the 3,385 US-listed companies with a price to book ratio meet it.

    A booklet collecting over fifty studies of cheap, small and fallen stocks, and the five traits the firm looked for.

    • Five traits: cheap on assets, cheap on earnings, insider purchases, a fallen price, small size.
    • Only the first sets the firm's own level: below book or net current assets.
    • About half the studies it collected were outside the United States.

    Source: What Has Worked in Investing, 1992, revised 2009.

No market count

  • Warren Buffett

    Returns and debt, in words.

    Shareholder letters that judged a business by owner earnings, returns on capital and little debt, in words.

    • Owner earnings: profit after the spending needed just to hold its ground.
    • A high return on equity, earned without undue debt or accounting tricks.
    • A fine business can still cost too much, as the letters warn.

    Source: Berkshire Hathaway shareholder letters, 1979 to 2014.

  • David Dreman

    Ranks the cheap end.

    Four contrarian strategies, each ranking large companies by one price ratio and taking the cheapest end.

    • Four separate sorts: price against earnings, book value, cash flow and dividends.
    • A rank takes the cheapest end, however high or low the market is.
    • The cheapest end is where the market is least enthusiastic.

    Source: Contrarian Investment Strategies: The Next Generation, 1998.

  • Philip Fisher

    Fifteen points, in words.

    Fifteen questions about a business and its people, answered mostly by asking around, not by reading accounts.

    • Margins counted against the same industry, read over a series of years.
    • A company could miss a few points, but never integrity.
    • He allowed three reasons for a sale; a high share price was not one.

    Source: Common Stocks and Uncommon Profits, 1958.

  • Joel Greenblatt

    Ranks companies, no pass mark.

    Two factors, earnings yield and return on capital, each used to rank the market rather than to filter it.

    • Earnings yield: operating profit against enterprise value.
    • Return on capital: operating profit over net working capital and net fixed assets.
    • Financial companies and utilities left out, above a size floor.

    Source: The Little Book That Beats the Market, 2005.

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  • Bruce Greenwald

    Earnings power, not computed.

    Value in three tiers: assets at reproduction cost, earnings power with no growth, and growth last.

    • For a business worth entering, assets at what rebuilding them would cost.
    • Earnings power: sustainable earnings over the cost of capital, no growth.
    • Growth without a barrier to entry adds no value, they argued.

    Source: Value Investing: From Graham to Buffett and Beyond, 2001.

  • Seth Klarman

    Margin of safety, in words.

    Klarman held that safety lies in the price paid, well below a conservative estimate of value.

    • Three valuation methods: future cash, liquidation, and market comparisons.
    • When the methods disagreed, he leaned to the lower value.
    • Risk came from the price paid, not from price swings.

    Source: Margin of Safety, 1991, ch. 8.

  • Peter Lynch

    P/E against growth.

    One Up on Wall Street: price weighed against earnings growth, a balance sheet benchmark, and checklists by type.

    • Six types of company, each judged by the tests that suit it.
    • Fair price, in his rule: a P/E equal to the earnings growth rate.
    • A normal balance sheet, in his book: three quarters equity, a quarter debt.

    Source: One Up on Wall Street, 1989.

  • Howard Marks

    Cycles and risk, in words.

    Marks asked what the price already assumes, and where the market stands in its cycle.

    • The question was what the price assumes, not only whether the business is good.
    • Risk meant permanent loss, which no price series measures.
    • The useful question was where the cycle stands, not what comes next.

    Source: The Most Important Thing, 2011; Mastering the Market Cycle, 2018.

  • Charlie Munger

    Quality at a fair price.

    Munger preferred a good business at a fair price to a mediocre one at a bargain price.

    • Over decades, returns follow the business's return on capital, he argued.
    • Little debt, kept so credit held in any conditions.
    • Management and understanding mattered, and neither shows up in a filing.

    Source: Berkshire Hathaway 2014 annual report; a 1994 talk at USC.

  • John Neff

    P/E below the market's.

    A low P/E against the market, with earnings growth and a dividend weighed together against the price.

    • A P/E judged against the market's, not against a fixed number.
    • Growth plus yield, over the P/E: the return weighed against the price.
    • Very fast growth read as a warning, not a reason to pay more.

    Source: John Neff on Investing, 1999.

  • Robert Novy-Marx

    A sort into fifths.

    Gross profits over total assets as the measure of profitability, and his evidence that it complemented value.

    • Gross profit, before overheads and financing, divided by total assets.
    • Sorted into fifths each June on NYSE breakpoints; no level was published.
    • In his sample, profitable firms looked expensive, so profitability complemented value.

    Source: Journal of Financial Economics, 2013.

  • James O'Shaughnessy

    Two fund screens.

    Wrote What Works on Wall Street; his funds' SEC prospectus spelled out two screens condition by condition.

    • Price to sales below 1.5: market value over the latest twelve months of sales.
    • Fixed rules, fifty stocks, equal weights, rebalanced once a year.
    • The final step was a rank, on price gain or on yield.

    Source: O'Shaughnessy Funds prospectus, October 1996.

  • Walter Schloss

    Book value, wary of debt.

    A short list of factors that uses book value as a starting point and warns against borrowing.

    • Book value as the starting point for what a company is worth.
    • His reason: assets usually change slowly, and earnings can change fast.
    • A standing warning to be careful of borrowing.

    Source: Factors needed to make money in the stock market.

  • Terry Smith

    Cash returns, in words.

    An owner's manual that sets out in words what the fund seeks: high returns in cash, no need to borrow.

    • Quality: a high return on capital, sustained, and counted in cash.
    • Earnings per share set aside, because they ignore the capital employed.
    • Price judged by free cash flow yield against bond yields.

    Source: Fundsmith Equity Fund Owner's Manual, 2025 edition.

  • John Templeton

    Sixteen rules, many markets.

    Templeton's sixteen rules called for bargains among quality companies, judged on value, not market trends or the outlook.

    • He looked for low prices where most investors were pessimistic.
    • Each company was judged on its own value, not on market trends.
    • His rules called for diversification: safety in numbers.

    Source: 16 Rules for Investment Success.

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