Investor Glossary: 100+ Stock Market and Valuation Terms Explained
Investing comes with a lot of jargon. This investor glossary explains 101 terms you are likely to meet when researching stocks, reading company accounts, building a valuation or reviewing your portfolio. The definitions are grouped by topic, so you can return to the section you need without reading everything at once.
A definition is a starting point, not an investment signal. A low P/E does not automatically make a stock cheap, a strong growth forecast is not a promise, and a risk model cannot predict every loss.
Valuation: what is a business worth?
Discounted cash flow (DCF): A valuation method that forecasts future cash flows and discounts them back to today's money. The result depends heavily on the assumptions, not just the arithmetic.
Intrinsic value: An estimate of what a business is worth based on its fundamentals, rather than its current share price. Different reasonable assumptions can produce different estimates.
Fair value: The value per share estimated by a model. Comparing it with the market price suggests potential upside or downside, not a guaranteed future price.
Upside / downside: The percentage difference between estimated fair value and the current share price. A €60 estimate versus a €50 price implies 20% potential upside.
Discount rate: The annual required return used to convert future cash into today's money. A higher discount rate reduces the present value of the same future cash flows.
WACC: Weighted average cost of capital: the blended required return of shareholders and lenders, normally incorporating the tax benefit of debt. It is commonly used to discount unlevered cash flows to the whole business.
Cost of equity: The return shareholders require. A common estimate uses the risk-free rate plus beta multiplied by the equity market risk premium; it is typically used to discount cash flows to equity.
Cost of debt: The cost of a company's borrowing. In WACC calculations, it is commonly adjusted for the tax deductibility of interest where applicable.
Risk-free rate: A reference return on an investment considered to have very low default risk, often a government bond yield. The currency and maturity should fit the valuation.
Market risk premium: The extra return investors require for owning equities rather than a risk-free asset. It is an estimate, not a fixed observable promise.
Terminal value: The estimated value of cash flows beyond the explicit forecast period. It can account for a large share of a DCF result, making its assumptions especially important.
Long-term (terminal) growth: The growth rate assumed after the forecast period in a perpetual-growth model. It should be sustainable for the business and currency, and must be lower than the discount rate in that model.
Margin of safety: The discount to estimated fair value an investor seeks to allow for forecasting errors and uncertainty. It reduces the price paid; it does not remove risk.
P/E ratio: Share price divided by earnings per share. It shows how much investors pay for each unit of profit; it is generally not meaningful when earnings are negative.
Forward P/E: Share price divided by forecast earnings per share, often for the next fiscal year or next 12 months. Check which forecast period is being used.
EV/EBITDA: Enterprise value divided by earnings before interest, taxes, depreciation and amortization. It supports comparisons across different financing structures, but does not make debt, capital expenditure or accounting differences irrelevant.
Price-to-book (P/B): Share price divided by book value per share. It can be useful for asset-heavy businesses, but book value may not capture intangible assets or the current economic value of assets.
PEG ratio: P/E divided by an earnings-growth rate, commonly entered as a whole-number percentage. It is a rough growth-adjusted comparison whose usefulness depends on the forecast and calculation convention.
Free cash flow yield: Free cash flow divided by market capitalization, or another value denominator depending on the cash-flow definition. Use a consistent definition when comparing companies.
Dividend yield: Annual dividends per share divided by the share price. A high yield may reflect a falling price and does not guarantee the dividend will continue.
Enterprise value (EV): A measure of the value of the whole operating business, commonly calculated as market capitalization plus debt minus cash. More complete calculations can include preferred equity and non-controlling interests.
Market capitalization: Share price multiplied by shares outstanding. This is the market value of the equity, not the value of the whole business including debt.
Value trap: A stock that appears cheap on a valuation ratio but whose deteriorating business makes that apparent bargain misleading.
Bear / Base / Bull case: Pessimistic, central and optimistic scenarios for a company's performance. They are scenarios, not guaranteed outcomes or automatically assigned probabilities.
CAGR: Compound annual growth rate: the steady annual rate that connects a starting value with an ending value. It smooths the path and does not show the volatility between those points.
A valuation example
If a company trades at €50 and earns €2.50 per share, its P/E is 20. If your DCF estimates fair value at €60, the implied upside is 20%. Neither figure is enough on its own: check earnings quality, debt, growth assumptions and how the estimate changes under less favourable conditions.
In Foremetrics, explore these concepts through Custom DCF, Valuation, Peer Comparison and the Bear/Base/Bull projections. For a fuller walkthrough, read How to value a stock with DCF.
Financial statements: understanding the business
Income statement: A report of revenue, expenses and profit over a period, such as a quarter or fiscal year.
Balance sheet: A snapshot of assets, liabilities and shareholders' equity at a particular date. Assets equal liabilities plus equity.
Cash flow statement: A report of cash moving through operating, investing and financing activities. It helps explain why accounting profit and cash generation differ.
Revenue: Sales recognised during a period before expenses, also called the top line. Revenue is not necessarily cash already collected.
Gross margin: Gross profit divided by revenue, expressed as a percentage. Gross profit is revenue minus the direct cost of goods or services sold.
Operating margin: Operating profit divided by revenue. It measures profitability after operating costs but generally before interest and tax.
EBITDA: Earnings before interest, taxes, depreciation and amortization. It is a profitability measure, not a substitute for operating cash flow or free cash flow.
EBITDA margin: EBITDA divided by revenue, expressed as a percentage. Compare consistently calculated figures, especially when a company reports adjusted EBITDA.
Net income: Profit after expenses, interest and taxes, also called the bottom line. When calculating shareholder metrics, check whether the figure is attributable to common shareholders.
Free cash flow (FCF): Commonly, operating cash flow minus capital expenditure. Definitions vary, so distinguish this measure from cash flows to the firm or to equity used in valuation models.
CapEx: Capital expenditure: spending on long-term assets such as equipment, buildings and data centres. It uses cash even when the expense is recognised over several years.
D&A: Depreciation and amortization: accounting charges that allocate the cost of tangible and intangible assets over time. They are non-cash charges in the current period, but the assets still required investment.
Working capital: Current assets minus current liabilities. Valuation models often use operating working capital, excluding cash and financing items; changes can absorb or release cash.
Net debt: Debt minus cash and cash equivalents, subject to the chosen definition. Negative net debt indicates net cash.
Debt-to-equity: Debt divided by shareholders' equity, a measure of leverage. Negative or unusually small equity can make the ratio difficult to interpret.
ROIC: Return on invested capital: after-tax operating profit divided by invested capital, often using average capital. It helps assess how efficiently a business uses its funding.
ROE: Return on equity: net income divided by shareholders' equity, often average equity. High leverage or a small equity base can inflate it.
Book value: The accounting value of shareholders' equity: assets minus liabilities. It is not necessarily the amount a buyer would pay for the business.
Shares outstanding: Shares held by shareholders, excluding treasury shares. A period-end share count differs from the weighted-average count used in EPS.
Dilution: A reduction in an existing shareholder's percentage ownership when additional shares are issued. Stock-based compensation and convertible instruments can contribute to dilution.
Profit is not the same as cash
A company can report rising net income while cash is tied up in receivables, inventory or new equipment. Read the income statement alongside the balance sheet and cash flow statement. In Foremetrics, the Financials and Charts pages help you compare these measures over time; check whether you are viewing standardized or as-reported figures.
Earnings and estimates: results versus expectations
Earnings report: A company's quarterly or annual results, often accompanied by a press release and an analyst call.
EPS: Earnings per share: earnings attributable to common shareholders divided by the weighted-average number of common shares outstanding.
Diluted EPS: EPS adjusted for potentially dilutive instruments such as options and convertible securities under the applicable accounting rules. Not every instrument is included, particularly when its effect would be anti-dilutive.
Consensus estimate: An aggregate forecast from analysts covering a company, commonly an average. The analysts included and the calculation method depend on the data source.
Beat / miss: Results above or below the relevant consensus estimate. Compare the same metric, reporting basis and fiscal period.
Earnings surprise: The difference between reported and expected results, often expressed as a percentage of the absolute estimate. Percentage comparisons can be unstable when estimates are close to zero.
Guidance: Management's forecast or outlook for future performance. It may be a range and can change as conditions change.
Earnings call transcript: A written record of management's results discussion and questions from analysts. It provides context that headline numbers may miss.
Price target: An analyst's estimate of a stock's future price, often over roughly 12 months. It is an opinion based on assumptions, not a promised outcome.
Analyst rating: An analyst's recommendation, such as Buy, Hold or Sell. Rating scales differ across research firms.
GAAP / IFRS: Accounting frameworks: US generally accepted accounting principles and International Financial Reporting Standards. Differences in treatment can affect comparisons.
Adjusted earnings: Earnings that exclude selected items under a company's or data provider's definition. Review the reconciliation to reported earnings; an excluded expense may recur.
10-K: A comprehensive annual report filed with the US Securities and Exchange Commission by companies subject to that requirement.
10-Q: A quarterly report filed with the SEC, generally covering the first three fiscal quarters for applicable US reporting companies.
8-K: A current report filed with the SEC to disclose specified material events, such as an acquisition or leadership change. Not every announcement requires an 8-K.
Fiscal year: A company's 12-month accounting year, which may not match January to December.
Use Foremetrics' Earnings, Estimates and SEC Filings pages to put actual results, forecasts and original disclosures side by side. Forecasts should inform your research, not replace it.
Portfolio and risk: looking beyond one stock
Portfolio: The collection of investments you hold. For a complete view of risk, consider holdings across accounts rather than looking at one account in isolation.
Asset allocation: How a portfolio is divided across asset classes such as equities, bonds and cash.
Position size: The value of one holding as a share of the portfolio, usually expressed as a percentage.
Cost basis: The acquisition cost of a holding, potentially including relevant fees. Tax treatment and calculation methods vary by jurisdiction.
Unrealized gain / loss: The difference between a holding's current value and its cost basis before it is sold. It can change with prices and exchange rates.
Realized gain / loss: The gain or loss recognised when a holding is sold, based on proceeds and the applicable cost basis.
Diversification: Spreading exposure across investments to reduce dependence on a single outcome. It cannot eliminate market-wide losses.
Concentration risk: The risk of having too much exposure to one company, sector, country or shared driver. Several holdings can still have similar underlying risks.
Beta: A historical measure of how an asset's returns relate to a benchmark's returns. A beta of 1.2 suggests greater sensitivity to that benchmark in the estimation period, not a guaranteed 20% larger move every day.
Volatility: The variability of returns over time, often measured using standard deviation. It captures price fluctuations, not every form of investment risk.
Drawdown: A decline from a previous peak, usually expressed as a percentage. Maximum drawdown is the largest peak-to-trough decline in the observed period.
Currency risk: The effect of exchange-rate changes on the value of investments measured in your home currency.
Rebalancing: Adjusting holdings or directing new contributions to bring a portfolio back towards its target allocation.
Dollar-cost averaging (DCA): Investing a fixed amount at regular intervals, regardless of the market price. It spreads purchase dates but does not guarantee profit or outperform a lump-sum investment.
Compounding: Returns accumulating on earlier returns when they remain invested. Returns can be negative, so growth is not guaranteed to accelerate.
Watchlist: A list of investments you want to follow, whether or not you own them.
Investment thesis: Your written reason for owning an investment, including the assumptions behind it and what evidence would change your view.
A portfolio example
A €2,000 holding in a €10,000 portfolio has a 20% position weight. Owning five companies does not necessarily make that portfolio well diversified if all five depend on the same industry or economic conditions.
Try the free Portfolio Risk Analyzer to explore historical risk measures, or the DCA backtest calculator to compare contribution plans. Historical results and simulations are not forecasts.
Market and trading basics
Stock (share): A unit of equity ownership in a company. Voting and economic rights depend on the share class.
ETF: Exchange-traded fund: a pooled investment that trades on an exchange. Its holdings, structure, fees and risks depend on the fund.
Index: A measure tracking a defined group of securities, such as the S&P 500 or AEX. An index is not itself a directly tradable investment.
Ticker: The short trading symbol used to identify a security on an exchange, such as MSFT or ASML. Exchange and share class also matter when identifying the instrument.
Bull market / bear market: Common descriptions of sustained rising or falling markets. A fall of 20% from a peak is a widely used bear-market convention, not a universal rule.
Dividend: A distribution a company makes to shareholders, commonly in cash. Dividends can be reduced or suspended and are not an additional risk-free return.
Buyback: A company repurchasing its own shares. This can reduce shares outstanding, although new issuance may offset the effect.
Stock split: A proportional increase in the number of shares and reduction in price per share. The split itself does not change your percentage ownership or create business value.
Market order / limit order: A market order seeks execution at available prices; a limit order specifies the highest purchase price or lowest sale price you will accept. Market orders do not guarantee a price, and limit orders do not guarantee execution.
Bid / ask spread: The difference between the highest quoted buying price and the lowest quoted selling price. It is one element of trading costs.
Large-cap / small-cap: Categories based on market capitalization. The thresholds vary across markets and index providers.
Stock screener: A tool that narrows a stock universe using criteria such as market capitalization, sector or financial metrics. A screening result is a research candidate, not a recommendation.
Tokenized stock: A digital token intended to provide exposure linked to a listed share. Depending on its structure, it may not convey direct share ownership, voting rights or the same investor protections as the underlying security.
European and Dutch investor terms
Tax and regulatory rules change. These definitions explain the concepts rather than prescribe a tax calculation; confirm current rules with official sources and consider professional advice for your circumstances.
Box 3: The part of Dutch income tax covering savings and investments. The calculation depends on the tax year, asset categories and applicable rules, including procedures relating to actual returns; it should not be reduced to one universal rate on portfolio value.
Heffingsvrij vermogen: The tax-free wealth allowance used in the Dutch Box 3 calculation. Its amount and application depend on the tax year and personal circumstances.
Werkelijk rendement: Dutch for actual return. It is relevant to Box 3 actual-return calculations and the proposed transition to an actual-return-based system; definitions, procedures and implementation dates should be checked against current official guidance.
Dividend withholding tax: Tax deducted from a dividend before payment. The amount and any relief depend on the source country, treaty, investor status and applicable rules.
Euronext Amsterdam: The Amsterdam market operated by Euronext, where Dutch and other securities are listed and traded.
AEX: A leading equity index associated with Euronext Amsterdam. Its membership is determined by the index provider's current selection methodology and review rules.
UCITS: Undertakings for Collective Investment in Transferable Securities: an EU regulatory framework for qualifying investment funds. UCITS status does not mean a fund is risk-free.
KID (KIID): A Key Information Document summarises key features, risks and costs of an investment product under the applicable rules. KIID refers to the related Key Investor Information Document; the required document depends on the product and regulatory framework.
W-8BEN: A US tax form used by eligible non-US individuals to certify foreign status and, where applicable, claim treaty benefits. Brokers often collect it; reduced withholding is not automatic for every investor or payment.
GDPR: The General Data Protection Regulation, the EU framework governing the processing of personal data and individuals' related rights.
For current details, consult the Dutch Tax Administration, Dutch government, AFM, Euronext and IRS W-8BEN guidance.
Put the terms to work
Start with a company you understand. Read its financial statements, compare reported earnings with expectations, test valuation assumptions and then consider what a position would do to the risk of your overall portfolio. The glossary is most useful when a term leads you back to the underlying numbers and disclosures.
Continue with How to value a stock with DCF, a practical stock research routine, or the free DCA backtest. When you want to explore the full Foremetrics workspace, start your 14-day free trial—no credit card required.
Based on the supplied Investor glossary. Definitions are simplified for clarity and educational use. This article is general information, not investment, legal or tax advice. Valuations, analyst forecasts, backtests and simulations do not guarantee future performance.