Investing terms can often feel confusing, especially for beginners. This glossary is designed to give you clear, simple definitions of the most important concepts in fundamental investing so you can understand how markets work and make better financial decisions.
Fundamental investing focuses on analyzing businesses based on their financial performance, competitive advantage, and long-term value. To do that effectively, you need to understand the language investors use—from basic terms like assets and cash flow to more advanced concepts like return on invested capital (ROIC) and discounted cash flow (DCF).
In this investing glossary, each term is explained in plain language with a focus on real-world understanding—not technical jargon. Whenever possible, definitions are connected to broader investing concepts so you can see how each idea fits into the bigger picture.
You’ll learn key terms related to:
Financial statements and accounting concepts
Business analysis and valuation methods
Stock market fundamentals and investment strategies
Risk, return, and long-term decision-making
If you’re just getting started, this glossary is the perfect place to build your foundation. If you’re already learning, it will help reinforce and clarify the concepts that matter most.
Start with our complete guide: What Is Fundamental Investing
Then explore deeper topics in Investing Basics and Business Analysis
Return on capital is a profitability and efficiency measure that shows how much profit a company generates relative to the capital used in the business. In fundamental investing, return on capital helps investors evaluate how effectively a company turns capital into earnings. It is especially useful for analyzing business quality, capital efficiency, reinvestment opportunities, competitive
Fair value is an estimate of what an asset, business, stock, or investment is reasonably worth based on available information. In fundamental investing, fair value helps investors compare a security’s market price with a reasonable estimate of value. A stock trading below fair value may be undervalued. A stock trading above fair value may be
An overvalued stock is a stock that appears to trade above its estimated intrinsic value. In fundamental investing, an overvalued stock matters because the market price may already reflect overly optimistic expectations about future growth, earnings, margins, or business quality. A company can be excellent and still have an overvalued stock if investors pay too
An undervalued stock is a stock that appears to trade below its estimated intrinsic value. In fundamental investing, an undervalued stock matters because it may offer investors the chance to buy ownership in a business for less than the business is worth. The goal is not simply to buy a stock that has fallen in
Multiple compression happens when investors become willing to pay a lower valuation multiple for the same company, earnings, revenue, EBITDA, or cash flow. In fundamental investing, multiple compression matters because a stock can decline even when the underlying business is still growing. If the market assigns a lower valuation multiple to a company, the stock
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Multiple expansion happens when investors become willing to pay a higher valuation multiple for the same company, earnings, revenue, EBITDA, or cash flow. In fundamental investing, multiple expansion matters because a stock can rise not only because the business grows, but also because the market assigns a higher valuation to that business. It is one
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Precedent transactions is a valuation method that estimates a company’s value by comparing it to similar companies that were previously acquired or sold. In fundamental investing, precedent transactions help investors understand what buyers have paid for similar businesses in real-world mergers, acquisitions, and takeovers. This method is commonly used in acquisition analysis, private market valuation,
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Comparable company analysis is a valuation method that estimates a company’s value by comparing it to similar publicly traded companies. In fundamental investing, comparable company analysis helps investors understand how the market values similar businesses based on metrics such as revenue, earnings, EBITDA, free cash flow, growth, margins, and return on capital. It is commonly
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EBITDA margin is a profitability metric that shows EBITDA as a percentage of revenue. In fundamental investing, EBITDA margin helps investors evaluate how much operating earnings a company generates from each dollar of sales before interest, taxes, depreciation, and amortization. It is commonly used to compare operating profitability, business efficiency, cost structure, and valuation across
Return on assets (ROA) is a profitability ratio that measures how much net income a company generates relative to its total assets. In fundamental investing, return on assets helps investors evaluate how efficiently a company uses its asset base to produce profit. It is especially useful for comparing asset-heavy businesses, banks, insurers, manufacturers, retailers, and
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