How to Read Stock Metrics

The ratios that serious investors rely on, and what each one actually tells you.

Why metrics matter

Buying a stock means buying a piece of a business. Before you buy any business, you want to know how profitable it is, how much cash it generates, how much debt it carries, and whether the price you're paying is reasonable relative to those fundamentals. Metrics give you that picture in a compact, comparable form. The goal isn't to memorise formulas; it's to develop intuition for what these numbers mean about a business.

The key metrics at a glance

P/E Ratio (Price-to-Earnings)

A P/E of 15 means you're paying $15 for every $1 of yearly profit. A P/E of 30 means you're paying $30. A higher P/E isn't automatically bad; fast-growing companies often trade at 30, 40, or more because investors expect profits to rise. What matters is context. A P/E that's low compared with the company's own history, or low compared with other companies in the same industry, is often a hint that the market is being overly pessimistic. A P/E number on its own, without that comparison, tells you very little.

Earnings Yield

If a stock's P/E is 20, its earnings yield is 5%. The benefit of this view is that it reads like a return rate, so you can compare it directly to other places you might park your money. If a 10-year U.S. Treasury bond pays 4% and a high-quality stock has an earnings yield of 7%, the stock is offering a meaningful premium in exchange for the extra risk of owning a business instead of a government bond.

Free Cash Flow Yield (FCF Yield)

Free cash flow is the cash a business has left over after paying its day-to-day bills and spending on long-lived assets such as factories, equipment, and software (this spending is called capital expenditure). That leftover cash is what the company can hand back to shareholders as dividends, use to buy back its own shares, pay down debt, or reinvest in new projects. Free cash flow is harder to dress up than reported earnings because it follows actual cash in and out of the company's bank account. A high FCF yield, typically above 5% to 6%, means the company generates a lot of real cash for each dollar you pay for its shares.

ROIC (Return on Invested Capital)

ROIC tells you whether a company is good at putting its money to work. A business that consistently earns above 15% on the capital it invests is generally a high-quality compounder: a company that reinvests profits and keeps growing its earning power year after year. ROIC also helps you tell two kinds of cheap stocks apart. A low-ROIC business at a low price is often a value trap (a stock that looks cheap but stays cheap because the underlying business keeps getting worse). A high-ROIC business at a temporarily low price is usually a genuine opportunity.

52-Week Drawdown

A drawdown of -30% means the stock is trading 30% below its highest point in the past year. On its own, a big drawdown tells you nothing; the price might have fallen because the underlying business genuinely got worse. But when a sharp drawdown is paired with fundamentals that are still healthy (steady cash flow, reasonable debt, consistent returns on capital), it often points to the market overreacting to short-term news. That combination is the core signal behind Buy the Dip screening.

Debt-to-Equity

A high debt-to-equity ratio means the company relies heavily on borrowed money. Debt is not automatically a bad thing. Used well, it can boost returns for shareholders. The risk is that debt has to be repaid on a schedule, no matter what. When earnings soften or interest rates rise, a company carrying a lot of debt has less room to move and a greater chance of running into serious trouble. Value investors generally prefer companies whose debt loads are modest enough to weather a bad year or two without panic.

EV/EBITDA

Enterprise value is the market cap plus net debt (the company's debt minus the cash it already has). Think of it as the price you would pay to buy the entire company outright, including taking on its debts. EBITDA is a rough proxy for the cash a business produces from its day-to-day operations, before it pays interest on its debt, pays tax, or accounts for the gradual wearing out of its assets. Because EV/EBITDA ignores how a company is financed, it lets you compare businesses that carry very different amounts of debt. It's commonly used for utilities, telecoms, and industrial companies.

S&P 500 CAPE (Shiller)

Economist Robert Shiller designed this ratio to smooth out the ups and downs of the business cycle, so one blockbuster or disastrous year doesn't distort the picture. Using 10 years of earnings, and adjusting those earnings for inflation (so old dollars and new dollars are on equal footing), gives you a long-range view of whether the U.S. stock market as a whole looks expensive or cheap. Stock Pixie shows the latest value from the public Shiller monthly dataset next to the VIX (a measure of expected market volatility) and the 10-year U.S. Treasury yield. A few caveats: a high CAPE has coexisted with years of further gains, and a low CAPE does not guarantee a safe bottom. Use it for long-horizon context, not as a market-timing signal.

Normalized P/E (10Y) for a single stock

This borrows Shiller's idea of averaging a decade of earnings and applies it to a single company. Because one weak year can't skew the number, it's a steadier view of the earnings power a business has shown across an entire cycle. A few details worth knowing. The earnings used are diluted earnings per share, which count all the shares that would exist if employee stock options and convertible bonds were exercised, giving a more conservative picture. The figures are in dollars as reported at the time, not adjusted for inflation (unlike the market-wide Shiller CAPE). And the metric is most reliable when earnings have been relatively stable. Large one-time charges, turnaround years, or periods with reported losses can make the number unavailable or misleading, so always read it alongside the regular trailing P/E (the P/E using the most recent 12 months of earnings) and similar companies in the same industry.

How to read these metrics together

No single metric tells the full story. A low P/E paired with a heavy debt load isn't obviously attractive. A high FCF yield paired with a falling ROIC might mean a business is living off assets built up in better days.

The most compelling setups stack multiple signals at once: a P/E below the company's historical average, an FCF yield above 5%, an ROIC above 12%, a manageable debt load, and a meaningful drawdown from the 52-week high. That combination points to a business that is genuinely good, temporarily out of favour, and trading below what it's worth.

How Stock Pixie combines these

Each Stock Pixie screener blends together the signals that matter for a particular investing style. The Buy the Dip screener weights P/E, earnings yield, FCF yield, ROIC, and drawdown. The Dividend screener weights dividend yield, payout ratio, free cash flow coverage of the dividend, and dividend growth. Every ticker ends up with a single 0-to-10 score so you can compare opportunities directly, rather than having to juggle every metric in your head at once.