Last updated: January 19, 2026
Market capitalization (market cap) is calculated by multiplying share price by total shares outstanding. It represents the total value investors place on a company.
Companies are categorized as large-cap (>$10B), mid-cap ($2-10B), small-cap ($300M-2B), and micro-cap (<$300M).
Market cap affects index inclusion, ETF weighting, and institutional investor interest.
Understanding market capitalization helps you make better investment decisions and plan for taxes. Explore related concepts below to deepen your knowledge.
Market capitalization, or market cap, is the total dollar market value of a company’s outstanding shares. It's calculated by multiplying the current stock price by the total number of shares outstanding.
Market cap helps investors determine a company's size and its potential for growth and risk. Generally, large-cap companies are more stable and less risky, while small-cap companies have more growth potential but higher risk.
Large-cap stocks typically have a market value of $10 billion or more. Mid-cap stocks range from $2 billion to $10 billion, and small-cap stocks are generally between $300 million and $2 billion.
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