For more detail, see this deep-dive on total stock market vs s&p 500.
Disclaimer: This article is for educational purposes only and does not constitute financial or investment advice. All investment decisions should be made in consultation with a qualified financial advisor based on your individual circumstances. Past performance does not guarantee future results. For more detail, see our analysis of what is market cap and why does it matter more than stock.
A student once asked me why a ₩5,000 stock seemed “cheaper” than a ₩500,000 stock. It’s an intuitive trap, and it caught me off guard — because the question assumes that price represents something about value. It doesn’t. Market capitalization does. For more detail, see our analysis of is the stock market overvalued in 2026? what cape ratio says.
Stock Price Tells You Almost Nothing
A stock’s share price in isolation is nearly meaningless for evaluating a company’s size, value, or relative cost. It tells you how much one share costs — a number entirely determined by how many shares the company has issued. For more detail, see this deep-dive on geopolitics and stock markets.
Related: index fund investing guide
Example: Company A has 1,000 shares at ₩10,000 each. Company B has 10 shares at ₩1,000,000 each. Company A’s total value (market cap): ₩10,000,000. Company B’s total value: ₩10,000,000. Identical. But the share prices differ by 100x. Comparing those prices and calling one “cheaper” is like comparing a ₩10,000 single-serve coffee to a ₩5,000 500ml bottle and concluding coffee is more expensive than bottled water. For more detail, see our analysis of international diversification.
What Is Market Capitalization?
Market capitalization = share price × total shares outstanding.
This gives the total market value of a company’s equity — what the market currently thinks all the company’s shares are worth collectively. It’s the metric that actually represents company size.
Standard market cap categories:
I believe this deserves more attention than it gets.
Last updated: 2026-04-12
Your Next Steps
- Today: Pick one idea from this article and try it before bed tonight.
- This week: Track your results for 5 days — even a simple notes app works.
- Next 30 days: Review what worked, drop what didn’t, and build your personal system.
Disclaimer: This article is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with any questions about a medical condition.
About the Author
Written by the Rational Growth editorial team. Our health and psychology content is informed by peer-reviewed research, clinical guidelines, and real-world experience. We follow strict editorial standards and cite primary sources throughout.
References
- Bogle J.C. (2017). The Little Book of Common Sense Investing. Wiley.
- Vanguard Research (2024). Principles for Investing Success. vanguard.com
- U.S. Securities and Exchange Commission (2024). investor.gov
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