Glossary
This glossary consolidates the essential vocabulary used throughout the Stock Valuation book, from foundational concepts like intrinsic value and discount rates to advanced frameworks such as real options and reverse DCF analysis. Each term is grounded in practical application, with examples drawn from real company analysis and investment decision-making.
Abnormal Earnings
Earnings in excess of what is required to sustain the current level of shareholder equity. Also called "supernormal earnings," abnormal earnings arise when a company's return on equity exceeds its cost of equity. In the residual income model, abnormal earnings are the driver of value creation; Apple's sustained operating margins well above its WACC generate abnormal earnings that justify premium valuations.
Adjusted Book Value
The balance sheet value of assets minus liabilities, restated to reflect current market values rather than historical costs. This approach is especially useful for asset-heavy businesses where book value significantly diverges from economic reality. A regional bank's adjusted book value might reflect current market rates on its loan portfolio, which traditional book value would miss entirely.
Asset-Based Valuation
A valuation method that values a company based on the fair market value of its tangible and intangible assets minus liabilities. This approach is most appropriate for holding companies, financial institutions, and capital-intensive businesses where assets are the primary value drivers. Insurance companies are often valued using asset-based approaches because the fair value of their investment portfolios is readily observable.
Beta
A measure of systematic risk relative to the overall market, representing how volatile a stock is compared to a market index. A beta of 1.0 means the stock moves in line with the market; greater than 1.0 indicates higher volatility. Technology stocks typically have betas of 1.3 to 1.8, while utility stocks often have betas below 1.0 due to their defensive nature.
Bull/Bear/Base Case
Three scenarios in financial modeling representing optimistic, pessimistic, and most likely outcomes respectively. These cases drive sensitivity analysis by varying key assumptions such as growth rates, margins, or discount rates. A base case might assume 5% perpetual revenue growth, while the bear case assumes 2% and the bull case assumes 8%.
CAPM
The Capital Asset Pricing Model calculates the required rate of return on an equity investment based on the risk-free rate, equity risk premium, and beta. Expressed as: Required Return = Risk-Free Rate + Beta × (Market Risk Premium). CAPM is the industry standard for determining the discount rate in DCF valuations, though critics argue it oversimplifies risk by relying solely on systematic risk.
Capital Allocation
The process of directing capital (retained earnings, debt issuance, or asset sales) toward investments that create shareholder value. Skillful capital allocation is often more important to long-term returns than operational excellence. Berkshire Hathaway's value creation has been driven more by disciplined capital allocation and opportunistic acquisitions than by the performance of any single business.
Cash Flow from Operations
The actual cash generated by a company's core business activities, found on the cash flow statement. This metric is more difficult to manipulate than net income because it reflects real cash movements. A company reporting strong earnings but declining operating cash flow may be using aggressive accounting or facing collection problems.
Clean Surplus
An accounting identity stating that changes in equity equal net income minus dividends, with no other direct equity adjustments. Clean surplus is a foundational assumption in residual income models. Most major accounting items flow through the income statement under clean surplus, though some items (certain foreign exchange gains, pension adjustments) bypass net income under GAAP.
Comps
Short for comparables; the valuation multiples of similar, publicly traded companies used as benchmarks. Comps valuation assumes that similar companies should trade at similar multiples. If peer tech companies trade at an average EV/EBITDA of 15x and your target trades at 12x, this may indicate undervaluation—provided the businesses are truly comparable.
Conglomerate Discount
The tendency for diversified conglomerates to trade at a lower valuation multiple than the sum of their parts. This discount arises from the market's skepticism about management's ability to allocate capital efficiently across diverse businesses and reduced transparency. Berkshire Hathaway often trades at a premium to its sum-of-the-parts value, bucking the trend—a testament to investor confidence in its capital allocation.
Cost of Capital
The weighted average of the cost of debt and cost of equity, reflecting the blended rate at which a company must compensate its creditors and shareholders. Also called WACC, this is the minimum return a company must earn on its investments to maintain shareholder value. A company with a 7% WACC must generate returns exceeding 7% on new projects, or it will destroy value.
DCF
Discounted Cash Flow analysis values a company by projecting future free cash flows and discounting them to present value at the cost of capital. DCF is the most theoretically rigorous valuation method, grounded in the principle that value equals the present worth of all future cash flows. A mature software company with predictable cash flows is ideal for DCF; a speculative biotech firm with binary outcomes is not.
DDM
The Dividend Discount Model values a company based on the present value of all future dividend payments. Also called the Gordon Growth Model when a constant growth rate is assumed in perpetuity. DDM works well for stable, dividend-paying utilities and REITs but is unsuitable for growth companies that reinvest all earnings.
Discount Rate
The interest rate used to convert future cash flows into present value, reflecting the time value of money and investment risk. For equity valuation, the discount rate is typically the cost of equity derived from CAPM. A higher discount rate (reflecting greater risk) reduces present value; a company with 20% equity risk meriting a high discount rate will appear less valuable than an identical cash-flow stream from a lower-risk business.
Dividend Yield
Annual dividends per share divided by the current stock price, expressed as a percentage. Dividend yield reflects the cash return investors receive relative to their investment. A stock trading at $100 per share with $2 in annual dividends has a 2% dividend yield.
EBIT
Earnings Before Interest and Taxes; operating profit after deducting operating expenses from revenue. EBIT isolates the earnings generated by core business operations, excluding financing and tax effects. EBIT margin (EBIT as a percentage of revenue) is a key metric for comparing operational efficiency across companies with different capital structures and tax rates.
EBITDA
Earnings Before Interest, Taxes, Depreciation, and Amortization; a proxy for operating cash generation. EBITDA adds back depreciation and amortization (non-cash charges) to EBIT, making it useful for comparing businesses with different asset bases. While popular in practice, EBITDA ignores capital expenditure requirements, so it can overstate true cash generation for capital-intensive businesses.
Economic Value Added (EVA)
The profit generated above the cost of capital, calculated as NOPAT (Net Operating Profit After Tax) minus the cost of capital times invested capital. EVA = NOPAT − (WACC × Invested Capital). EVA directly measures whether a company is creating or destroying shareholder value; a profitable company with an EVA below zero is destroying value because its returns fall short of its cost of capital.
Enterprise Value (EV)
The total economic value of a company, calculated as market capitalization plus net debt (debt minus cash). Enterprise value is the price at which the entire business would trade, including both equity holders and debt holders. A company with a $10 billion market cap, $3 billion in debt, and $1 billion in cash has an EV of $12 billion.
EV/EBITDA
A valuation multiple comparing enterprise value to earnings before interest, taxes, depreciation, and amortization. This multiple is widely used because EBITDA is relatively consistent across companies with different tax rates and capital structures. If pharmaceutical companies trade at an average EV/EBITDA of 12x and your target trades at 8x, it may represent an attractive entry point.
EV/Sales
Enterprise Value divided by total revenue; a valuation multiple less affected by profitability differences than price-based multiples. EV/Sales is useful for valuing unprofitable or early-stage companies where EBITDA or earnings may not be meaningful. Early-stage software companies often trade at 5–8x sales, while mature manufacturing firms may trade below 1x sales.
Exit Multiple
The valuation multiple assumed when selling or divesting an asset at the end of an analysis period. In a typical DCF model, the terminal value may be calculated using an exit multiple; for instance, assuming you sell a business at 8x EBITDA in year 10. Exit multiple assumptions should be grounded in historical trading ranges and transaction precedents.
FCFF
Free Cash Flow to the Firm; the cash available to all investors (both debt and equity holders) after capital expenditures and taxes. FCFF = EBIT(1 − Tax Rate) + Depreciation & Amortization − Capital Expenditures − Change in Net Working Capital. FCFF is discounted at the WACC to derive enterprise value in DCF analysis.
FCFE
Free Cash Flow to Equity; the cash available exclusively to equity shareholders after debt service, capital expenditures, and reinvestment. FCFE = Net Income + Depreciation & Amortization − Capital Expenditures − Change in Net Working Capital + Net Borrowing. FCFE is discounted at the cost of equity to derive equity value.
Forward P/E
The price-to-earnings ratio based on projected earnings over the next 12 months, rather than historical earnings. Forward P/E is forward-looking and useful for valuing growth companies where near-term earnings are expected to rise significantly. A company trading at 20x forward earnings may appear expensive on trailing P/E but reasonable if earnings are accelerating.
GICS
Global Industry Classification Standard; a four-tier system for categorizing companies into sectors, industry groups, industries, and sub-industries. GICS enables investors to identify comparable companies and understand peer groupings. Within the Information Technology sector, companies are subdivided into Software & Services, Hardware, and Semiconductors.
Gordon Growth Model
A simplified DCF formula assuming constant dividend or cash flow growth in perpetuity, used to calculate terminal value. Terminal Value = (Final Year Cash Flow × (1 + Growth Rate)) / (Discount Rate − Growth Rate). The model is elegant but sensitive to small changes in growth rate and discount rate assumptions; a perpetual growth rate assumption must be below the long-term economic growth rate to be credible.
Growth Rate
The expected annual percentage increase in revenue, earnings, cash flow, or dividends. Growth rates vary widely by company maturity and industry; a startup may assume 30% annual growth while a utility might assume 2%. Growth rate assumptions in terminal value calculations are particularly critical—a 2% perpetual growth assumption can double valuation relative to a 1% assumption.
Intrinsic Value
The fundamental economic value of a company based on its ability to generate cash flows, independent of current market price. Intrinsic value is the true "fair value" around which price should gravitate over time; it is not synonymous with market price, which can be driven by sentiment and herd behavior. An investor who estimates intrinsic value at $50 per share but sees the stock trading at $30 has identified a potential investment opportunity with a margin of safety.
Liquidation Value
The amount shareholders would receive if a company were dismantled and its assets sold in an orderly or forced sale. Liquidation value sets a floor below which stock prices rarely fall; it is especially relevant for distressed or asset-heavy companies. A retailer's liquidation value (based on fire-sale inventory and store leases) may be significantly below book value.
Margin of Safety
The difference between estimated intrinsic value and the current purchase price, providing a cushion against estimation error or adverse events. If intrinsic value is $50 and the stock trades at $35, the margin of safety is 30%. A wide margin of safety is a cornerstone of value investing, protecting against errors in judgment or unexpected business deterioration.
Market Capitalization
The total market value of a company's outstanding equity shares, calculated as share price multiplied by the number of shares outstanding. Market cap is the price the market currently assigns to the entire equity stake in a business. A company with 100 million shares outstanding trading at $50 per share has a market cap of $5 billion.
Market Efficiency
The degree to which asset prices reflect available information, ranging from weak-form (historical prices) to strong-form (all information, public and private). If markets are perfectly efficient, all publicly available information is already reflected in prices, and beating the market becomes impossible. Many investors argue markets are inefficient in the short term (driven by sentiment) but reasonably efficient over longer periods.
Mean Reversion
The tendency of metrics like valuations, growth rates, or returns to move toward their historical average over time. Mean reversion suggests that companies trading at very high multiples are likely to see those multiples contract, and vice versa. A software company trading at 40x earnings (well above the historical 20x average) may be vulnerable to mean reversion if growth disappoints.
NAV
Net Asset Value; the value of assets minus liabilities, commonly used for closed-end funds, mutual funds, and holding companies. For a holding company, NAV equals the sum of the fair values of its investments minus debt. If a fund has $1 billion in assets and $200 million in liabilities, its NAV is $800 million.
P/B Ratio
Price-to-Book ratio; the market price per share divided by the book value per share. P/B ratios are particularly useful for asset-heavy businesses like banks and manufacturing; a P/B below 1.0 may indicate the market values the company below its net asset value. Financial institutions with low ROE typically trade at low P/B multiples.
P/E Ratio
Price-to-Earnings ratio; the market price per share divided by trailing 12-month earnings per share. P/E is the most widely cited valuation multiple; a high P/E suggests the market expects strong future growth, while a low P/E may indicate value or deteriorating prospects. The S&P 500 has historically traded at a long-term average P/E of 16–18x.
P/S Ratio
Price-to-Sales ratio; market capitalization divided by annual revenue. P/S is useful for comparing unprofitable companies or those with volatile earnings, as it bypasses profitability. Software-as-a-service companies often trade at 3–8x sales because of their high gross margins and recurring revenue.
PEG Ratio
Price/Earnings-to-Growth ratio; the P/E ratio divided by the expected earnings growth rate. PEG attempts to relate valuation to growth expectations; a PEG below 1.0 suggests undervaluation relative to growth prospects. A company with a P/E of 30 and 30% expected earnings growth has a PEG of 1.0 (neither cheap nor expensive on a growth-adjusted basis).
Present Value
The current worth of a future cash flow or series of cash flows, discounted at an appropriate rate reflecting risk and time. Present value is the fundamental concept underlying all DCF valuation. A $110 cash flow received in one year, discounted at 10%, has a present value of $100.
Real Options
The value embedded in managerial flexibility to adapt strategy in response to changing circumstances, such as the option to expand, abandon, or pivot a project. Real options theory recognizes that management's ability to make future decisions adds value beyond the base-case DCF forecast. A pharmaceutical company developing a drug has not just the value of the base-case scenario but also real options to expand clinical trials, pivot to different indications, or abandon the program based on interim data.
Relative Valuation
Valuing a company by comparing its multiples (P/E, EV/EBITDA, etc.) to those of similar, publicly traded companies. Relative valuation is simpler and faster than DCF but relies on the assumption that comparable companies trade at justified multiples. If your target company trades at 12x P/E and peers average 15x P/E, relative valuation would suggest undervaluation.
Residual Income
The net income generated by a company in excess of the return required on its equity capital. Residual Income = Net Income − (Cost of Equity × Beginning Shareholders' Equity). The residual income model values a company as book value plus the present value of future residual income streams.
Reverse DCF
Working backward from a current stock price to derive the implied growth rate or profitability assumptions the market has priced in. Reverse DCF answers the question: "What growth rate must this company achieve to justify its current valuation?" If a stock trading at $100 implies a 4% perpetual growth rate, and you expect growth to be only 2%, the stock is overvalued.
Risk-Free Rate
The yield on government debt (typically a long-term Treasury bond) representing the return on an investment with no default risk. The risk-free rate is a foundational input to CAPM, used to calculate the discount rate. As of 2026, 10-year U.S. Treasury yields are around 4.0%, serving as a benchmark for risk-free returns.
SOTP
Sum-of-the-Parts valuation; valuing each distinct business segment or division separately and summing the results. SOTP is especially useful for conglomerates operating in unrelated industries. If a company operates a wireless division valued at $20 billion and a media division worth $8 billion, SOTP yields an enterprise value of $28 billion.
Sensitivity Analysis
Testing how changes in key assumptions (growth rate, discount rate, margins) affect the valuation output. Sensitivity analysis reveals which assumptions are most critical to the valuation and where forecast precision is most important. In a DCF model, changing the discount rate from 9% to 10% might alter valuation by 20%, while changing revenue growth from 5% to 6% alters it by only 5%.
Terminal Value
The value of a company at the end of an explicit forecast period, typically calculated using the Gordon Growth Model or an exit multiple. Terminal value often represents 70–80% of total DCF value, so it warrants careful attention. A company with $100 million FCFF in year 5 and a 3% perpetual growth rate, discounted at 8%, yields a terminal value of approximately $2 billion.
WACC
Weighted Average Cost of Capital; the blended cost of debt and equity financing, weighted by their respective proportions in the capital structure. WACC = (E/V × Cost of Equity) + (D/V × Cost of Debt × (1 − Tax Rate)), where E is equity value and D is debt value. A company with a 7% WACC must earn at least 7% on its investments to create shareholder value.