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
Nominal return is the investment return measured before adjusting for inflation. It shows how much an investment increased or decreased in percentage terms based on its stated or market value, without accounting for changes in purchasing power. For example, if an investment grows from $10,000 to $10,800 over one year, its nominal return is: That
Compound Annual Growth Rate (CAGR) is the annualized rate at which an investment, revenue stream, earnings figure, or other financial value would have grown if it increased at a constant compounded rate from its beginning value to its ending value. CAGR smooths a multi-year result into a single annual growth rate. It is commonly used
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Annualized return is the average compounded rate of return an investment earned per year over a period longer or shorter than one year. It converts a multi-period investment result into an equivalent yearly rate, making it easier to compare investments held for different lengths of time. For example, an investment that gains 21% over two
Total return is the complete gain or loss from an investment over a period, including both changes in market value and income received, such as dividends or interest. For a stock, total return generally includes: For a bond, total return can include: In simple terms: Total return gives investors a more complete measure of investment
Maximum drawdown is the largest percentage decline an investment, portfolio, fund, or market experiences from a previous peak to a subsequent trough during a specified period. It measures the worst historical peak-to-trough loss before a new high is reached. For example, if a portfolio rises to $120,000 and later falls to $84,000 before recovering, the
Drawdown is the decline in value of an investment, portfolio, or market from a previous peak to a subsequent low point. It measures how much value was lost before the investment recovered or established a new high. The basic formula is: For example, if a portfolio falls from $100,000 to $80,000: Drawdown is an important
The Sharpe Ratio is a risk-adjusted performance metric that measures how much excess return an investment or portfolio generated for each unit of volatility it experienced. In simple terms, the Sharpe Ratio asks: “How much return did the investor earn relative to the amount of volatility taken?” A higher Sharpe Ratio generally indicates better historical
Alpha is a measure of an investment’s return relative to the return expected based on its benchmark or level of market risk. In simple terms, alpha represents the amount by which an investment outperformed or underperformed its expected return after accounting for benchmark performance or risk exposure. A positive alpha suggests an investment performed better
Beta is a measure of how sensitive an investment’s returns have historically been to movements in a benchmark, usually the overall stock market. A beta of: Beta is commonly used to evaluate stocks, ETFs, mutual funds, and portfolios. Why Beta Matters Beta helps investors understand how much market-related volatility an investment has historically exhibited. Conceptually:
Standard deviation is a statistical measure of how widely investment returns are dispersed around their average return. In investing, it is commonly used as a measure of historical volatility. A higher standard deviation indicates that returns have fluctuated more widely around their average. A lower standard deviation indicates that returns have been more consistent. Conceptually:
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