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What Is Market Capitalization?

By Allen Krewzz
Published July 4, 2026Updated July 4, 2026
What Is Market Capitalization?

How Market Cap Is Calculated

The Standard Market Cap Categories

Why Market Cap Affects Risk and Volatility

Market cap isn't the same as company revenue: A company's market cap reflects what investors are willing to pay for future profits, not its current sales figures. A smaller-revenue company with strong growth expectations can carry a larger market cap than a bigger, slower-growing business.

Why Market Cap Matters for Diversification

Key Takeaways

Frequently Asked Questions

Is a higher market cap always better?

Can market cap change without the company doing anything?

What's the difference between market cap and enterprise value?

Conclusion

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