The P/E ratio is the price you pay for a stock divided by the earnings the company generates per share. At its core it answers a single question: how many dollars am I paying for each dollar of annual profit?

P/E = Stock Price ÷ Earnings Per Share (EPS). If a stock trades at $60 and earns $4 per share, its P/E is 15×. Alternatively, P/E = Market Capitalisation ÷ Net Income — the result is identical. Most data sources use trailing twelve months (TTM) EPS by default.

In isolation, P/E tells you almost nothing useful. A P/E of 15 is cheap in one context and expensive in another. What matters is the comparison:

The historical percentile is the most actionable of these three. When a stock's P/E is in the bottom 15% of its 10-year range, the market is paying unusually little for its earnings — regardless of what the S&P 500's average P/E happens to be.

The shaded blue band on the chart shows the stock's 25th–75th percentile P/E range over the selected period. The dashed median line is the 50th percentile. When the current P/E line sits below the band, the stock is historically cheap relative to its own earnings history. Above the band: historically expensive.

The coloured zones at the top of the page extend this further — "historically cheap" means the P/E is in approximately the bottom 10–25% of historical readings; "historically pricey" means top 10–25%.

The earnings trap: when low P/E is a mirage

The most important caveat with P/E is cyclicality. For businesses whose earnings swing sharply with the economic cycle — energy producers, materials companies, banks — the P/E can look deceptively low exactly when earnings are at their peak. If oil prices collapse next year, the "E" shrinks dramatically and the historical P/E percentile becomes meaningless.

Graham's solution was normalised earnings: instead of trailing EPS, use the average of 7–10 years of earnings to smooth out cycles. Sixtycents uses the rolling historical range to help you see whether a low P/E is genuinely unusual or just the cyclical pattern repeating.

These are starting points, not rules. A Dividend King with 50 years of consecutive growth might always trade between 18–28× — a P/E of 20 would be near the low end of its historical range, not "expensive."

Every stock page on Sixtycents shows the current P/E as a percentile of its own history — with the full chart so you can see the trend, not just the current snapshot.

See P/E in historical context for any stock

The most quoted metric in investing — and the most misread. Here's how to use it correctly.

Price-to-Earnings Ratio (P/E): The Number Behind Every Valuation Debate

Book value is what shareholders would theoretically receive if the company liquidated all its assets and paid off all its debts. The P/B ratio measures how much the market is paying relative to that accounting net worth.

P/B = Stock Price ÷ Book Value Per Share. Book Value = Total Assets − Total Liabilities. If a stock trades at $40 and its book value per share is $25, the P/B is 1.6×. A P/B below 1.0 means the market is valuing the company at less than its accounting net worth.

Graham considered P/B < 1 a strong signal of potential undervaluation — you're buying a dollar of assets for less than a dollar. In practice, a persistent P/B below 1 often means one of three things: the market doesn't trust the reported book value (asset write-downs coming), the business earns a poor return on its assets, or — occasionally — the stock is genuinely mispriced.

The key question is always: does the company earn a return on equity (ROE) that justifies paying above book value? A company generating 20% ROE deserves to trade well above 1× book. A company generating 5% ROE — below the cost of equity — arguably deserves to trade below book.

Where P/B works best — and where it fails

When companies make acquisitions, they often pay above book value. The premium gets recorded as "goodwill" — an intangible asset on the balance sheet. A company that has grown through acquisitions may carry enormous goodwill that inflates book value. Analysts often prefer "tangible book value" — book value minus goodwill and other intangibles — for a cleaner picture.

Like the P/E chart, the shaded band shows the 25th–75th percentile range of historical P/B readings. When the current value dips near or below the band, the market is pricing the stock's assets at an unusually low premium — often an opportunity worth investigating. Rising P/B over time, with rising ROE, is usually healthy (the market is rewarding better asset use).

The stock pages on Sixtycents show P/B history alongside percentile context — particularly useful for financial stocks where P/B is the primary valuation anchor.

Track P/B history for banks and value stocks

Graham's original margin of safety anchor — still essential for banks, insurers, and asset-heavy businesses.

Price-to-Book Ratio (P/B): Valuation Against Net Assets

P/E compares the stock price to earnings — but it ignores debt. Two businesses with identical operations but different capital structures will have different P/E ratios, making direct comparison misleading. EV/EBITDA solves this by measuring the whole enterprise, not just the equity.

Enterprise Value (EV) = Market Capitalisation + Net Debt (Total Debt − Cash). EBITDA = Earnings Before Interest, Taxes, Depreciation, and Amortisation. EV/EBITDA = EV ÷ EBITDA. If a company has a market cap of $500m, net debt of $200m, and EBITDA of $70m, its EV is $700m and EV/EBITDA is 10×.

When a private equity firm buys a company, it takes on the debt too. The acquirer's true cost is the equity price plus the debt it inherits. EV reflects this: it's the theoretical acquisition price you'd have to pay to own the entire business free and clear.

This makes EV/EBITDA the natural language for M&A analysis — and useful for investors because it strips out differences in how companies are financed. A highly leveraged company and a debt-free company with identical operations will have very different P/E ratios, but their EV/EBITDA should converge.

EBITDA adds back interest (to neutralise capital structure), taxes (vary by jurisdiction and structure), depreciation and amortisation (non-cash charges that vary by asset base). The result is a rough proxy for operating cash flow — comparable across companies regardless of their financing, tax situation, or accounting treatment of assets.

Adding back depreciation is only valid if you believe the assets don't actually wear out and need replacing. For a software company, this is largely true. For an airline, a pipeline operator, or a steel mill, depreciation is a very real cost — the physical assets do degrade and must eventually be replaced. For capital-intensive businesses, EV/EBIT (keeping depreciation in) or EV/FCF is more honest.

The chart plots the stock's EV/EBITDA over time. The shaded band is the 25th–75th percentile range. A reading below the band suggests the market is placing an unusually low acquisition-equivalent multiple on the business's operating earnings — often worth examining as a potential value opportunity. Rising EV/EBITDA over time, accompanied by rising margins and EBITDA growth, is healthy. Rising multiple without EBITDA growth is multiple expansion — a riskier situation.

Each stock page shows EV/EBITDA with its full historical percentile context. Use it alongside P/E and P/B to build a more complete valuation picture.

Compare acquisition multiples across stocks

Comparing companies fairly means accounting for debt differences. EV/EBITDA does that job.

EV/EBITDA: The Metric Acquirers Use

Dividend yield measures the income return on a stock investment: how much you receive in dividends each year per dollar you invest. But for value-conscious dividend investors, yield serves a second role: it's an indirect valuation signal.

Dividend Yield = Annual Dividends Per Share ÷ Current Stock Price × 100%. If a stock pays $2.40 per share in annual dividends and trades at $80, its yield is 3.0%. When the stock price falls to $60, the yield rises to 4.0% — even though the dividend itself hasn't changed.

Because yield moves inversely with price, tracking yield vs its historical range is essentially tracking whether the stock is expensive or cheap relative to the income it provides. For a company that grows its dividend consistently, a yield near the top of its 5-year range usually means the stock price has lagged — creating an unusual opportunity to lock in a historically high income rate from a business that has been reliably growing its payouts.

For dividend investors, a stock at a historically high yield — from a business with an intact dividend — is often the signal you've been waiting for.

The yield trap: when high yield is a warning

A high yield can mean two very different things. The first — a temporarily depressed price relative to a stable dividend — is often an opportunity. The second — a dividend that the market expects will be cut — is a trap. When the yield is unusually high, always check the payout ratio and recent earnings trend. A payout ratio above 80% on deteriorating earnings is a warning sign. A payout ratio of 45% on growing earnings is fine.

Unlike P/E, P/B, and EV/EBITDA — where low values are typically favourable — dividend yield is inverse: high yield (low price) is the signal you want. The chart shows yield over time with the historical percentile band. When the current yield line is near or above the top of the shaded band, the stock is offering an unusually attractive income rate relative to its own history. This is the zone dividend growth investors look for.

The Dividend Kings tier list ranks all 55 Dividend Kings by current yield vs 5-year average and composite valuation attractiveness.

See which Dividend Kings have above-average yields today

A yield near its historical high is often the simplest entry signal for dividend investors.

Dividend Yield: Income Signal and Valuation Signal at Once

A company that pays $2 in dividends while earning $4 per share has a payout ratio of 50% — it's returning half its earnings to shareholders and retaining the rest. One that pays $3.80 on $4 of earnings has a ratio of 95% — it's stretched nearly everything to maintain the dividend.

Payout Ratio = Dividends Per Share ÷ Earnings Per Share × 100%. A more conservative version uses free cash flow: FCF Payout Ratio = Dividends Paid ÷ Free Cash Flow. The FCF version is generally more reliable because earnings can be managed; cash leaving the bank account cannot.

There is no universal "correct" payout ratio — it varies significantly by sector and business model:

When a rising payout ratio is fine — and when it's dangerous

A payout ratio rising from 40% to 55% over five years while earnings grow steadily is healthy management: the company is increasing its dividend roughly in line with earnings. A payout ratio rising from 55% to 85% because earnings are declining while the dividend is held flat is dangerous. The company is funding the dividend partly from eroding earnings — a situation that eventually forces a cut.

This is why the payout ratio chart is most useful when read alongside the dividend yield chart. If the yield is historically high AND the payout ratio is rising above normal ranges, that's a combination that warrants caution rather than excitement.

The earnings-based vs FCF-based distinction

Net income is an accounting number subject to non-cash charges, one-time items, and accruals. Free cash flow — net income adjusted for capex and working capital changes — is what a company actually has to fund its dividend. Some businesses show high earnings-based payout ratios but comfortable FCF payout ratios (common in depreciation-heavy industries). Others show the reverse — a warning sign that reported earnings are inflating the apparent safety of the dividend.

Sixtycents shows payout ratio history alongside dividend yield — so you can assess both the attractiveness of the current entry yield and the durability of the dividend at the same time.

Combine payout ratio with yield history

The yield tells you what you receive. The payout ratio tells you whether it's safe.

Payout Ratio: Reading the Sustainability of Every Dividend

A P/E of 25 looks expensive compared to a P/E of 12. But if the first business is growing earnings at 30% per year and the second at 3%, the picture reverses. The PEG ratio captures this: it adjusts the P/E by the growth rate to show whether the premium is justified.

PEG Ratio = P/E Ratio ÷ EPS Growth Rate (%). A stock at P/E 20 growing at 20% per year has a PEG of 1.0. Peter Lynch considered PEG = 1.0 roughly fair value. Below 1.0: potentially undervalued for its growth. Above 2.0: likely overvalued for its growth.

The growth rate used in the denominator changes the result dramatically. Trailing PEG uses historical EPS growth (what actually happened). Forward PEG uses analyst consensus estimates (what people expect). Lynch was sceptical of long-range forecasts — he generally used the last few years of actual growth as his anchor, sometimes blended with near-term estimates.

The danger of forward PEG: analysts systematically overestimate growth for popular, high-momentum companies. A stock can show an attractive forward PEG of 0.8 based on optimistic estimates, then disappoint and end up with a trailing PEG of 2.5. Use forward PEG as a sanity check, not a primary signal.

When PEG is most — and least — useful

Just as P/E is most useful compared to a stock's own history, PEG is most powerful when tracked over time. A technology company might always command a PEG of 1.5–2.5 because of its quality and consistency. When its PEG drops to 0.9, that's historically cheap for that specific business — even if Lynch's absolute threshold would call it fair value.

The GARP track in the Learning Center covers Peter Lynch's full framework — how he used PEG in practice, what else he looked for, and where the methodology breaks down.

For a deeper read on GARP strategy

P/E ÷ earnings growth rate. The number that puts a price on growth — and reveals when you're overpaying for it.

PEG Ratio: Peter Lynch's Test for Fairly Priced Growth

Free cash flow is what remains after a company pays its operating costs and makes the capital expenditures needed to maintain and grow the business. FCF yield expresses this as a percentage of market capitalisation — the real cash return the business generates per dollar you invest.

Free Cash Flow = Operating Cash Flow − Capital Expenditure. FCF Yield = Free Cash Flow ÷ Market Capitalisation × 100%. If a company generates $500m in FCF and has a market cap of $6bn, its FCF yield is 8.3%. This is the rough annual "earnings yield" in cash terms.

Why FCF is often more reliable than earnings

Net income — the basis for P/E — is an accounting number shaped by depreciation schedules, amortisation of acquisitions, deferred taxes, stock-based compensation, and numerous other non-cash or discretionary items. CFOs don't have the same flexibility with free cash flow: it's the actual cash that arrived in the bank account after real spending.

This matters most for companies that have made large acquisitions (high goodwill amortisation depressing earnings), capital-light businesses (minimal capex amplifies FCF vs earnings), and any business where management uses accounting choices to manage reported EPS.

Interpreting FCF yield — the bonds analogy

Think of FCF yield as the "earnings yield" of the stock in cash terms. If a company yields 8% FCF and 10-year bonds yield 4%, the stock is offering double the cash return with the upside of business growth. If FCF yield compresses to 3% — below bond yields — you're paying a premium that requires faith in growth to justify.

For high-growth businesses deliberately reinvesting heavily in expansion, negative or low FCF yield is by design — not a signal of poor value. Amazon generated minimal FCF for most of its first decade while building infrastructure that ultimately became enormously valuable. For mature, slower-growth businesses, low FCF yield is a more reliable warning sign.

Also watch for "capex holidays" — management temporarily deferring maintenance spending to make FCF look better in the short term. This inflates FCF yield but eventually catches up in deteriorating assets and higher future spending.

Each stock page on Sixtycents shows FCF yield in historical context, so you can cross-check whether earnings-based and cash-based valuation metrics tell the same story — or diverge in ways worth investigating.

Track FCF yield alongside P/E and EV/EBITDA

Earnings can be massaged. Cash leaving the bank cannot. FCF yield is often the more reliable valuation signal.

Free Cash Flow Yield: The Cash Return on Your Investment

Net Debt / EBITDA answers a simple question: if the company devoted all its operating earnings to paying down debt, how many years would it take? A ratio of 2.0 means two years. This makes it intuitive to compare across businesses regardless of size.

Net Debt = Total Debt − Cash and Cash Equivalents. Net Debt / EBITDA = Net Debt ÷ EBITDA. If a company has $800m in debt, $200m in cash (net debt = $600m), and $200m EBITDA, its ratio is 3.0×. Negative net debt (more cash than debt) shows as a negative ratio — a healthy sign.

This metric primarily tells you about financial risk and capacity for future investment. A company with a ratio below 1× has nearly no leverage risk — it could theoretically pay off all its debt in under a year from operating earnings. One with a ratio above 4–5× has limited financial flexibility; if earnings decline, debt service can become a genuine problem.

Net Debt / EBITDA of 3× is considered high for a consumer goods company but entirely normal for a utility or regulated infrastructure business. Capital-intensive sectors with highly predictable, long-term contracted cash flows can sustain higher leverage because lenders accept the predictability as collateral. Always compare to sector peers, not to an absolute threshold.

The chart is most valuable for spotting direction. A ratio declining from 3.5 to 2.0 over three years signals a management team deliberately deleveraging — freeing up capacity for future dividends, buybacks, or acquisitions. A ratio rising from 1.5 to 3.5 requires understanding why: a single large acquisition can be fine; steadily rising leverage with stagnant EBITDA is a warning.

Sixtycents shows Net Debt / EBITDA history on every stock page — so you can combine it with P/E and EV/EBITDA to get a complete picture: is the stock cheap, and does the balance sheet support it?

Track leverage alongside valuation metrics

The most widely used leverage ratio — measuring how many years of operating earnings it takes to clear the net debt.

Net Debt / EBITDA: How Long to Pay Off the Debt

A practical reference for the eight valuation and financial health metrics used throughout Sixtycents — what they measure, how they're calculated, and when they're most (and least) useful.

Metrics Reference