Market Capitalization
Market cap is the total value of a company's outstanding shares: Share Price × Shares Outstanding. It categorizes companies by size.
Concept map
Learn, apply, review
Definition
Market cap is the total value of a company's outstanding shares: Share Price × Shares Outstanding. It categorizes companies by size.
Use case
Used in corporate finance workflows, analysis, and technical interviews.
Judgment check
Useful only when the assumptions and inputs behind the metric are understood.
Deep dive
How to think about Market Capitalization
Categories: Mega-cap ($200B+), Large-cap ($10B-$200B), Mid-cap ($2B-$10B), Small-cap ($300M-$2B), Micro-cap ($50M-$300M), Nano-cap (<$50M). Size historically correlates with returns — small-caps outperformed long-term but with higher volatility. Market cap-weighted indices dominate passive investing.
Example: Apple with 15.5B shares at $190/share = ~$2.95T market cap (mega-cap). A small company with 10M shares at $50 = $500M market cap (small-cap). The S&P 500 is market-cap weighted, so larger companies have disproportionate influence.
Rank-ready answer
Definition, example, and interview framing
Market cap is the total value of a company's outstanding shares: Share Price × Shares Outstanding. It categorizes companies by size.
Apple with 15.5B shares at $190/share = ~$2.95T market cap (mega-cap). A small company with 10M shares at $50 = $500M market cap (small-cap). The S&P 500 is market-cap weighted, so larger companies have disproportionate influence.
In an interview, define Market Capitalization, explain where it appears in a real finance workflow, then name one assumption or limitation that a reviewer should check.
FAQ
Frequently Asked Questions
What is Market Capitalization?
Market cap is the total value of a company's outstanding shares: Share Price × Shares Outstanding. It categorizes companies by size.
How is Market Capitalization used in finance?
Categories: Mega-cap ($200B+), Large-cap ($10B-$200B), Mid-cap ($2B-$10B), Small-cap ($300M-$2B), Micro-cap ($50M-$300M), Nano-cap (<$50M). Size historically correlates with returns — small-caps outperformed long-term but with higher volatility. Market cap-weighted indices dominate passive investing.
Can you give an example of Market Capitalization?
Apple with 15.5B shares at $190/share = ~$2.95T market cap (mega-cap). A small company with 10M shares at $50 = $500M market cap (small-cap). The S&P 500 is market-cap weighted, so larger companies have disproportionate influence.