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
Dilution happens when a company issues additional shares, causing each existing share to represent a smaller ownership percentage of the business. In fundamental investing, dilution matters because it can reduce a shareholder’s claim on earnings, cash flow, voting power, and intrinsic value per share. Even if a company grows, existing shareholders may benefit less if
A stock exchange is a marketplace where investors buy and sell publicly traded securities, such as stocks, exchange-traded funds, and other financial instruments. In fundamental investing, stock exchanges matter because they provide the trading infrastructure that allows investors to buy ownership in public companies and sell those shares to other investors. Why Stock Exchanges Matter
An initial public offering, often called an IPO, is the first sale of a company’s shares to the public through a stock exchange. Before an IPO, a company is privately owned by founders, employees, venture capital firms, private equity investors, or other private shareholders. After an IPO, public investors can buy and sell the company’s
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Trailing price-to-earnings ratio, often called trailing P/E Ratio, is a valuation metric that compares a company’s current stock price to its past earnings per share. In fundamental investing, trailing P/E Ratio helps investors evaluate how much the market is paying for a company’s actual reported earnings, usually from the last 12 months. Why Trailing P/E
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Forward price-to-earnings ratio, often called forward P/E Ratio, is a valuation metric that compares a company’s current stock price to its expected future earnings per share. In fundamental investing, forward P/E Ratio helps investors evaluate how expensive or cheap a stock looks based on forecasted earnings instead of past earnings. Why Forward P/E Ratio Matters
Price-to-earnings ratio, often called the P/E Ratio, is a valuation metric that compares a company’s stock price to its earnings per share. In fundamental investing, the P/E Ratio helps investors understand how much the market is paying for each dollar of a company’s earnings. A higher P/E Ratio usually means investors are paying more for
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Net debt is a measure of a company’s debt after subtracting cash and cash equivalents. In fundamental investing, net debt helps investors understand how much debt a company effectively carries after considering the cash it has available. It gives a cleaner view of financial leverage than total debt alone. Why Net Debt Matters Net debt
Market capitalization, often called market cap, is the total market value of a company’s outstanding shares of stock. In fundamental investing, market capitalization helps investors understand how much the stock market currently values a company’s common equity. It is calculated by multiplying the company’s stock price by its shares outstanding. Why Market Capitalization Matters Market
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Enterprise value, often called EV, is a valuation measure that estimates the total value of a company’s operating business. Enterprise value includes the value of a company’s equity, debt, and other financing claims, then subtracts cash and cash equivalents. In fundamental investing, enterprise value is often used because it shows what an investor might theoretically
Free cash flow yield is a valuation metric that compares a company’s free cash flow to its stock price or market value. Free cash flow yield shows how much cash a company generates for each dollar investors pay for the stock. In fundamental investing, it helps investors evaluate whether a stock is cheap or expensive
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