A single year's financials can be misleading. Earnings spike from one-time gains, margins compress during temporary disruptions, and debt ratios fluctuate with the capital cycle. That's why Buffett emphasizes studying multiple years of financial history, typically a decade or more, to understand a business's track record and assess the durability of its competitive advantages.
SafetyMargin.io's Historical Fundamentals section gives you 29 metrics charted across 10+ years. The tabs are grouped by the question they answer: what am I paying, is the business growing, is the cash real, what return does the company earn on capital, is the balance sheet sound, and where does the cash go? Here's how to read them.
A few of these charts also look forward. When analyst consensus estimates are available for a stock, the Revenue, EPS, P/E, PEG, and Valuation Bands tabs continue past the last reported year into a shaded forecast region marked off with an "Est." divider. Revenue and EPS show the analyst consensus estimate for the current and next fiscal year, P/E and PEG show the forward versions of those ratios computed from the consensus EPS at today's price, and the Valuation Bands extend their fair-value lines out to the forecast earnings. Every other metric stops at the last full year on purpose. No analyst consensus exists for figures like ROIC, free cash flow, or margins, and we would rather leave a chart honest than fill the gap with a number we made up. Read the points in the shaded region as the market's expectation, not as fact, and remember consensus estimates are routinely too optimistic at the top of a cycle.
Valuation: What Am I Paying?
P/E Ratio
The price-to-earnings ratio tells you how many years of current earnings you're paying at today's price. Track it historically to understand what the market has typically been willing to pay for this company. A P/E well below its historical average may signal undervaluation, or it may signal deteriorating fundamentals. Always investigate why the P/E has changed.
P/B Ratio (Price-to-Book)
Price divided by book value per share, or what the market pays per dollar of net assets on the balance sheet. Graham favored stocks trading near or below book value (P/B under 1.5), interpreting it as a margin-of-safety floor since shareholders own the residual assets after liabilities. The metric has aged unevenly: for asset-light businesses (software, services, brands), book value badly understates the actual earning power, so a P/B of 10 may still be reasonable. For asset-heavy businesses (banks, industrials, REITs, insurers), P/B remains a credible value gauge. Read it in context. A falling P/B for a stable, profitable business is more interesting than a low P/B from an eroding book value.
For tickers with negative stockholders' equity (typically from large buybacks exceeding retained earnings, with McDonald's the textbook case), the chart renders no value because P/B is mathematically meaningless when the denominator goes negative.
PEG Ratio
The PEG ratio adjusts the P/E for growth: P/E divided by earnings growth rate (in percent). A PEG near 1.0 is conventionally interpreted as fair pricing, meaning you're paying one unit of P/E for each percentage point of growth. Below 1.0 may flag undervaluation relative to growth; above 2.0 signals the market is paying a premium for the growth story.
The chart computes each year's PEG from the trailing 3-year EPS CAGR: realized growth over the prior three years, what actually happened rather than what analysts predicted. The multi-year CAGR smooths the single-year swings that make a raw year-over-year PEG noisy, especially for cyclical businesses. Read the multi-year trend rather than fixating on any single point. The chart renders no value during loss years and during years when earnings declined, because PEG is mathematically undefined when growth is non-positive and any imputed value would mislead more than it informs.
One consistency note worth understanding. The dashboard's headline PEG metric (in Key Metrics, and the screener's PEG column) is a different calculation from this historical chart. The headline figure uses the broker-standard forward PEG, P/E divided by analysts' 5-year EPS growth estimate, when analysts cover the stock. When they don't (the case for most non-US companies), it falls back to a trailing-twelve-month PEG: P/E divided by the growth of the last four reported quarters' EPS over the prior four. It shows nothing at all when neither is available or when earnings are flat or shrinking. Deliberately, it never falls back to a multi-year growth average, which can flatter a company whose earnings have already peaked: a business that grew fast then stalled would still post a low, tempting-looking PEG off its high historical base. So the headline PEG can differ from this chart's most recent point, and that difference is expected rather than a bug.
Valuation Bands
This FastGraphs-style chart overlays the actual stock price against earnings-based value lines: one at 15× EPS (SafetyMargin.io's standard fair-value reference multiple) and one at the company's own historical average P/E × EPS. When the price line sits below the bands, the market is pricing in less than the company historically earns. When it's far above, you're paying a significant premium. The tooltip shows the exact discount or premium relative to the historical average P/E band.
Keep in mind that the 15× EPS line is a rough benchmark, not a universal truth. It corresponds to a ~6.7% earnings yield. What constitutes "fair value" depends heavily on prevailing interest rates. In a 2% Treasury environment, 15× may be conservative for a quality business; when the 10-year Treasury exceeds 4.5%, a 12–13× multiple may be more appropriate as "fair value." Use the bands as relative guides within a company's own history, not as absolute value indicators.
FCF Yield
Free cash flow expressed as a percentage of market cap. Where P/E says how many years of earnings you're paying, FCF Yield flips the question: what cash return is the business throwing off, per dollar you invest, this year? A 6% FCF Yield means the company is generating six cents of free cash for every dollar of market value. That's a direct, comparable number, and you can stack it against the 10-year Treasury, the company's own history, or sector peers.
For a stable business, a yield well above the prevailing risk-free rate is one of the cleanest signals of undervaluation. The same yield on a business with collapsing margins or a one-time CapEx underrun is a trap. Read the FCF Yield line alongside Revenue and Gross Margin, not in isolation.
OE Yield
Owner Earnings expressed as a percentage of market cap, the same idea as FCF Yield but on Buffett's preferred cash figure. Owner Earnings is net income plus depreciation and amortization minus the maintenance CapEx needed to keep the business running (the Greenwald estimate caps maintenance CapEx at total CapEx). Because it subtracts only maintenance CapEx rather than every dollar of CapEx, OE Yield adds back the growth spending that FCF Yield treats as a cost.
Read OE Yield next to FCF Yield. When OE Yield sits well above FCF Yield, the company is investing heavily to expand, and reported free cash flow understates the cash the existing business actually throws off. When the two lines track each other, the business is barely growing its asset base, so what you see in FCF is close to the full owner return. A wide, persistent gap is the signature of a compounder reinvesting at high rates.
Price / NCAV
Ben Graham's "net-net" measure: price ÷ net current asset value per share, where NCAV = Current Assets − Total Liabilities. Below 0.66 (the green reference line) is a classic net-net, where you pay under two-thirds of liquidation value, the deepest form of value investing; below 1.0 means the stock trades under its NCAV. The chart leaves a year blank when NCAV is negative, since total liabilities exceed current assets, which is the case for most large-cap companies. This metric is primarily useful for screening small-cap, asset-heavy, or turnaround situations where deep value opportunities may exist.
Growth and Scale
Revenue
Revenue growth that consistently outpaces inflation signals genuine demand expansion. But revenue alone isn't enough. A company can grow the top line while margins erode, so always pair revenue trends with margin analysis.
EPS (Earnings Per Share)
The single most important trend line. Look for:
- Consistent upward trajectory: the hallmark of a durable business. Occasional dips are fine if the long-term direction is clear.
- Stagnant or declining EPS: a warning that the business is losing competitive ground or facing structural headwinds.
- Wild volatility: cyclical businesses show this pattern. It's not necessarily bad, but it makes valuation harder and demands a wider margin of safety.
One caveat: EPS can grow through share buybacks even if the underlying business is flat. Always pair EPS trends with revenue and FCF per share to verify that growth is organic, not manufactured through financial engineering.
Reported vs adjusted EPS. Many companies headline an "adjusted" or "non-GAAP" earnings figure that adds back items they consider non-recurring or non-cash. When a company's adjusted number differs materially from its statutory (GAAP) net income, the EPS chart draws a second grey dashed line for reported GAAP EPS (net income ÷ shares) beneath the main line. The gap between the two is the size of those adjustments, and reading what drives it is one of the more useful judgment calls in fundamental analysis:
- The benign kind: a serial acquirer carries large non-cash amortization of acquired intangibles. That charge depresses GAAP earnings without representing a real cash cost, so the adjusted line is arguably closer to what an owner actually earns. A wide, steady gap here flags "this is an acquisitive company," not a red flag.
- The skeptical kind: the gap is mostly stock-based compensation added back. Stock comp is a real cost. It dilutes you, the owner, every year, so an adjusted number that excludes it flatters earnings. A wide gap of this type is a reason for more caution, not less.
The point of showing both lines is that "adjusted" is not automatically truer than GAAP. It depends entirely on what was adjusted. Where a company does not report an adjusted figure, the two lines coincide and only one is drawn.
Cash Flow Quality
Free Cash Flow
FCF is what's left after the business pays all its bills and reinvests in itself. It's the actual cash available to reward shareholders. Compare FCF against EPS. If EPS grows but FCF doesn't, the company may be relying on accounting adjustments rather than real cash generation.
Owner Earnings vs. FCF
Buffett's preferred cash flow measure, introduced in his 1986 shareholder letter. Owner Earnings (Net Income + D&A minus Maintenance CapEx) is less punitive than standard FCF for companies investing heavily in growth. SafetyMargin.io estimates maintenance capex using depreciation as a proxy. Buffett himself acknowledged this estimation is "extremely difficult." When Owner Earnings significantly exceeds FCF, the company is spending heavily on growth CapEx, so check whether those investments are generating adequate returns via ROIIC.
SBC-Adjusted FCF
For technology companies, Stock-Based Compensation can be a massive hidden cost. If standard FCF is $10B but SBC-Adjusted FCF is only $6B, shareholders are being diluted by $4B annually. A persistent wide gap is a red flag for true cash generation.
Returns on Capital: The Moat
ROIC (Return on Invested Capital)
A consistently high ROIC (above 15%) over a decade is one of the strongest signals of a competitive moat. What matters is the consistency, not a single spike. Cyclical businesses can exceed 15% at peak earnings without having any moat at all. If ROIC is trending downward, the moat may be eroding: competitors are catching up, or the company is investing in lower-return opportunities.
ROIIC (Return on Incremental Invested Capital)
This answers the forward-looking question: what return is the company getting on the next dollar it invests? It's calculated as: (Change in NOPAT) / (Change in Invested Capital) over a given period. Consistently high ROIIC (above 10%) identifies true compounders. Declining ROIIC suggests the company is running out of high-return reinvestment opportunities.
ROE (Return on Equity)
Similar to ROIC but affected by leverage. If ROE is high and stable while Debt/Equity is low and stable, that's genuine operational excellence. If ROE is high but Debt/Equity is rising, the returns are being manufactured with borrowed money.
DuPont Analysis
ROE tells you the return, but DuPont Analysis tells you how that return is generated. It decomposes ROE into three multiplicative components:
- Net Profit Margin (green line): what percentage of revenue becomes profit. Rising margins signal pricing power and operational discipline.
- Asset Turnover (blue line): how efficiently the company uses its assets to generate revenue. Higher is better. Asset-light businesses naturally score higher here.
- Equity Multiplier (orange line): the degree of financial leverage (Total Assets ÷ Equity). Higher means more debt-funded assets.
The ideal company drives ROE through high margins and asset efficiency, not leverage. If you see ROE rising primarily because the equity multiplier is increasing, that's a yellow flag: the company is borrowing its way to better returns. Compare the DuPont tab against the Debt/Equity tab for the full picture.
Gross Margin
Pricing power shows up here. A company with stable or expanding gross margins over a decade can raise prices without losing customers. That's a moat. Declining gross margins often signal commoditization or increasing input costs the company can't pass through.
Balance Sheet and Solvency
Book Value per Share
Shareholders' equity divided by shares outstanding. It's the accounting estimate of what's left for owners if the company were wound down at carrying value, and it sets a rough floor for the per-share claim on the business. A steadily rising book value over a decade tells you the company is genuinely accumulating equity, not just dressing up earnings. If book value is flat or shrinking while net income is positive, the cash is going somewhere else, usually buybacks or dividends, and you should check the Capital Allocation and Share Count tabs to see which.
Book value understates the true value of asset-light businesses with strong brands or software platforms, where most of the moat lives off the balance sheet as intangible economic value. It also goes negative for companies that have bought back so much stock their accumulated buybacks exceed retained earnings, in which case the metric stops being meaningful.
Cash and Equivalents
The cash position on the balance sheet, charted year by year. Large, stable cash balances give a company optionality: ride out a downturn, buy a competitor when prices are right, defend the dividend without borrowing. Buffett has always prized the ability to act when others can't, and that ability sits in this chart.
Read it together with Debt / Equity. A company sitting on a lot of cash but also carrying a lot of debt is not actually wealthy on a net basis, and the Net Debt / EBITDA tab is the cleaner read on solvency. Cash growing faster than the business is reinvesting can also signal management that has run out of attractive ideas, which is when capital allocation discipline really starts to matter.
Debt / Equity
Watch the direction, not just the level. A company that steadily reduces its Debt/Equity ratio over time is strengthening its balance sheet. A company where D/E is trending upward is becoming more leveraged, and more vulnerable to downturns.
The orange line is gross debt/equity. The blue dashed line is Net Debt / Equity, which nets cash and short-term investments out of the debt. The gap between them is the company's cash cushion: a wide gap means a lot of the gross debt is offset by cash on hand. When the net line drops below zero, the company holds more cash than debt (a net cash position), which is the strongest balance sheet reading. Gross leverage can look elevated while net leverage is modest, so read the two together rather than reacting to the gross line alone.
Interest Coverage
This metric matters most during economic stress. A company with 15x coverage today can handle a significant earnings decline and still service its debt comfortably. Below 3x warrants caution, especially for cyclical businesses, where a modest downturn could stress debt service. For stable, predictable businesses (utilities, consumer staples), 3x may be acceptable. For volatile businesses, aim for higher coverage.
Net Debt / EBITDA
The trend is more important than any single reading. Negative values (more cash than debt) give a company enormous strategic flexibility: for acquisitions, buybacks, or simply surviving a recession without cutting the dividend.
Capital Allocation and Shareholder Returns
Dividend Yield
The annual dividend as a percentage of the current stock price, plotted year by year. Yield rises either because management increased the dividend or because the share price fell, and those are two very different signals. A rising yield driven by steady dividend growth is the income investor's best case. A rising yield driven by a falling stock price is often the market predicting that the dividend isn't safe.
Always read this chart together with the Dividend Safety tab. Yield alone tells you almost nothing about whether the income will still be there next year.
Buyback Yield
The cash spent on share repurchases each year as a percentage of market cap. Buybacks are the other half of capital return: instead of paying you cash, the company shrinks the share count so your slice of the business grows. A steady buyback yield, especially when shares are bought below intrinsic value, compounds per-share earnings over time. A spiky one that vanishes in good years and reappears in expensive ones is worth less. Read it alongside the Buyback Score tab, which judges whether those repurchases were made at attractive prices, and the Share Count tab, which confirms the buybacks actually reduced the count rather than just offsetting stock-based compensation.
This chart shows buyback yield net of stock-based compensation. Stock comp is mostly non-cash, so it never appears in the cash repurchase line, yet it dilutes you just as surely as the buybacks concentrate your stake. Subtracting it gives the capital that actually accrues to continuing owners. The grey dashed line is the gross figure before SBC, so the gap between the two lines is the dilution drag. When the net line drops below zero, the company is issuing more stock to employees than it repurchases, diluting owners on net despite the "buybacks." For many large software companies the gross line looks healthy while the net line is barely positive or negative, which is exactly the kind of thing this view is meant to expose.
Shareholder Yield
Dividend yield plus buyback yield (net of stock-based comp): the total capital a company returns to its owners relative to its market value. This is the most complete single measure of capital return, and it is the fair way to compare a dividend payer against a serial repurchaser. A company yielding 1% in dividends and 4% in net buybacks is returning more to owners than one paying a 3% dividend and buying back nothing. Because the buyback leg is net of stock comp, this number does not flatter companies whose repurchases merely offset employee dilution. Pair it with FCF: shareholder yield is only sustainable if it is funded by free cash flow rather than by debt, so check that free cash flow comfortably covers the combined dividend-plus-buyback payout.
Dividend Safety and Growth
For income investors, a high yield means nothing if the dividend gets cut. This tab evaluates dividend sustainability through multiple lenses:
- DPS (Dividend Per Share): the bars show the actual cash returned per share each year. Look for a steady upward staircase.
- Earnings Payout Ratio (blue line): what percentage of net income goes to dividends. Below 50% is comfortable; above 75% leaves little room for error.
- FCF Payout Ratio (orange line): a stricter test using free cash flow. A company can pay dividends from earnings on paper, but it needs actual cash to write the checks.
- Safety Score: SafetyMargin.io's proprietary composite (0–100) weighing payout ratios, FCF coverage, and dividend growth consistency. "Very Safe" (80+) means the dividend is well-covered and growing. "Unsafe" (below 40) flags elevated cut risk. This is a screening tool; always verify the underlying metrics yourself.
- Consecutive Increases & CAGR: the streak of annual DPS increases and compound growth rates over 3, 5, and all available years.
The red dashed line at 100% payout marks the danger zone: the company is paying out more than it earns, funding dividends from debt or reserves.
Capital Allocation
How management deploys cash reveals their priorities: heavy buybacks suggest they believe the stock is undervalued, rising dividends signal confidence in sustained earnings, and aggressive CapEx indicates growth investment. The stacked bars let you see at a glance whether the company is mostly returning cash to shareholders, reinvesting in the business, or paying down debt, and how that mix has shifted over time.
Buyback Score
Buying back stock is good for shareholders only when the stock is cheap. The Buyback Score grades each year of buybacks by comparing the P/E paid against the company's own historical average P/E. Green years are buybacks executed when the stock traded at a discount to its typical valuation, fair years are roughly average, and red years are buybacks done at a premium, which destroys per-share value rather than creating it.
This is one of the more direct windows into management quality. A board that piles into buybacks at 30× when the historical average is 17× is paying retail to shrink the share count, and shareholders pay the bill. Pair this chart with the Share Count tab to see whether the cumulative effect actually reduced shares outstanding or was offset by stock-based compensation.
Share Count / Dilution History
Buffett cares deeply about per-share metrics. A company can double its earnings, but if shares outstanding also double, each shareholder's slice of the pie hasn't grown. This tab tracks shares outstanding over time:
- Green bars indicate years where the share count decreased: buybacks exceeded dilution from stock-based compensation and option exercises.
- Red bars indicate years where shares increased: dilution from SBC, secondary offerings, or acquisitions using stock.
A persistent downward trend (all green) means management is rewarding existing shareholders. A persistent upward trend (all red) means your ownership is being slowly eroded. Pair this with the SBC-Adjusted FCF tab to see the full picture of dilution costs.
How to Read the Charts
Look for consistency, not perfection
The best businesses show steady, predictable improvement across most metrics over a decade. Perfection isn't required. What you want to avoid is companies that look great on one metric but terrible on others, or companies where the trend has recently reversed.
Compare across business cycles
If possible, ensure your 10-year window includes at least one economic downturn. How a company performs during a recession tells you more about its moat than how it performs during a boom.
Pair growth with quality
Revenue and EPS growth are meaningless if ROIC is declining. A company that grows by 15% annually but earns only 5% on invested capital is an empire builder, not a compounder. The best investments are companies that grow and maintain high returns on capital.
The Bottom Line
Historical fundamentals are the foundation of value investing. They tell you whether a company's current metrics are a reliable indicator of future performance or an aberration. A decade of consistent, high-quality financial results is the strongest evidence that a competitive moat exists, and that it's likely to persist.
Flip through the tabs on any stock's Historical Fundamentals section on SafetyMargin.io to build a complete picture before making your investment decision.