--- title: "What Is Market Capitalization?" description: "Market cap is share price times shares outstanding, it classifies stocks as large-cap, mid-cap, or small-cap and signals company size, liquidity, and risk." canonical: https://www.getswoopr.com/ask/what-is-market-capitalization/ source: "Swoopr Investment: https://www.getswoopr.com" --- # What Is Market Capitalization? ## Direct Answer > Market capitalization (market cap) is the total market value of a company's outstanding shares, calculated by multiplying the current share price by the total number of shares outstanding. It is the most commonly cited measure of a company's size and is used to classify stocks as large-cap, mid-cap, small-cap, and micro-cap. ## How Market Capitalization Is Used The formula is straightforward: if a company has 500 million shares outstanding and the current share price is $40, its market cap is $20 billion. That number changes continuously as the share price moves, which means market cap is a real-time reflection of what the public markets collectively believe the equity of the business is worth at any given moment. A company with a $10 stock and 1 billion shares outstanding has the same market cap as a company with a $100 stock and 100 million shares outstanding, the per-share price alone says nothing about size. Market cap is the primary way investors categorize stocks by size. The most common tiers are: mega-cap (above $200 billion), large-cap ($10 billion to $200 billion), mid-cap ($2 billion to $10 billion), small-cap ($300 million to $2 billion), and micro-cap (below $300 million). These thresholds are approximate and vary by source, but the categories matter because they correlate with different risk and return profiles. Large-cap stocks tend to be more stable and liquid; small-cap stocks can offer higher growth potential but come with higher volatility and lower liquidity. Knowing a company's market cap helps calibrate expectations. A $500 billion company doubling its market cap requires adding another $500 billion in value, an extraordinary feat. A $500 million company doubling requires adding $500 million, which is far more achievable. This is why small-cap stocks can produce outsized percentage returns: they are starting from a smaller base. It is also why analyst price targets and growth projections need to be read in the context of the company's current size, a projection implying a 10x market cap within five years deserves far more scrutiny for a large-cap than for a small-cap. ## Key Points - Market cap = current share price × total shares outstanding. It changes continuously as the price moves. - A high share price does not mean a large company, a $500 stock with 1 million shares outstanding is a smaller company than a $10 stock with 1 billion shares outstanding. - Cap tiers (large, mid, small, micro) serve as shorthand for liquidity, volatility, and growth-stage expectations, not hard rules about quality or investment merit. - Market cap is an equity-only measure; enterprise value (which adds debt and subtracts cash) is more relevant when comparing companies with different financing structures. ## Learn More Market cap is one of several metrics used to evaluate a company's fundamentals. See [Company Metrics Explained](https://www.getswoopr.com/stocks/fundamental-analysis/company-metrics-explained/) for a complete guide covering price-to-earnings, enterprise value, earnings per share, and other key measures. Related answers: [What Is Dollar-Cost Averaging?](https://www.getswoopr.com/ask/what-is-dollar-cost-averaging/) · [What Is Trading Volume?](https://www.getswoopr.com/ask/what-is-trading-volume/) ## Related Questions ### What is the difference between market cap and enterprise value? Market cap measures only the equity value of a company, the value of its shares. Enterprise value (EV) adds the company's total debt and subtracts its cash and cash equivalents, giving a fuller picture of what it would cost to acquire the entire business. Enterprise value is considered a more complete measure for comparing companies with different capital structures, which is why it is used in valuation multiples such as EV/EBITDA rather than market cap/EBITDA. ### How does market cap affect stock liquidity? Large-cap stocks typically trade millions of shares per day, making it easy to enter or exit positions of almost any size without meaningfully moving the price. Small-cap and micro-cap stocks often trade far fewer shares, so even a modest order can push the price significantly, a cost called slippage. This liquidity difference matters most for institutional investors managing large portfolios, but retail traders also encounter it: a thinly traded small-cap stock may have a wide bid-ask spread that erodes returns on every trade. ## References - [FINRA: Market Cap Explained (mega/large/mid/small/micro-cap thresholds)](https://www.finra.org/investors/insights/market-cap) ## Related Reading - [Ask: Investment Questions Answered](https://www.getswoopr.com/ask/) the section this guide belongs to - [How Does Crypto Staking Work?](https://www.getswoopr.com/ask/how-does-crypto-staking-work/) a companion guide in this cluster - [How Do You Read a Candlestick Chart?](https://www.getswoopr.com/ask/how-to-read-a-candlestick-chart/) a companion guide in this cluster - [What Is a Blockchain?](https://www.getswoopr.com/ask/what-is-a-blockchain/) a companion guide in this cluster - [What Is a Crypto Wallet?](https://www.getswoopr.com/ask/what-is-a-crypto-wallet/) a companion guide in this cluster - [What Is a Smart Contract?](https://www.getswoopr.com/ask/what-is-a-smart-contract/) a companion guide in this cluster - [Market Cap vs. Fully Diluted Valuation](https://www.getswoopr.com/crypto/tokenomics/market-cap-vs-fdv/) closely related - [What Is an NFT?](https://www.getswoopr.com/ask/what-is-an-nft/) a companion guide in this cluster - [What Is Dollar-Cost Averaging (DCA)?](https://www.getswoopr.com/ask/what-is-dollar-cost-averaging/) a companion guide in this cluster - [What Is Trading Volume?](https://www.getswoopr.com/ask/what-is-trading-volume/) a companion guide in this cluster