Market Capitalization

Market capitalisation, or market cap, tells you how much the stock market thinks an entire company is worth. The formula is simple: share price x total shares outstanding. A company trading at ₹500 with 100 crore shares has a market cap of ₹50,000 crore.

Why size matters

Market cap is the standard way to gauge a company's size, and in India it also determines how a stock is classified. SEBI's framework ranks all listed companies by market cap: the top 100 are large-cap, the next 150 (ranks 101-250) are mid-cap, and everything from rank 251 onward is small-cap. This list is refreshed periodically by AMFI and directly governs how mutual funds must invest, a large-cap fund, for example, must hold mostly top-100 companies.

What it does and doesn't tell you

Market cap reflects equity value, not the whole business. It ignores debt; a company can have a large market cap but also heavy borrowings, which is why analysts also look at enterprise value. A high market cap signals scale and (often) stability, not that a stock is cheap or expensive, that depends on valuation ratios like P/E.

A common confusion

Many beginners think a low share price means a "cheap" or small company. It doesn't. A stock priced at ₹50 can be a giant if it has billions of shares, while a ₹3,000 stock can be mid-sized. Price per share is meaningless without the share count, only market cap captures true size.

Why it matters for you

Large-caps tend to be steadier and more liquid; small-caps offer higher growth potential with sharper swings and thinner liquidity. Matching your fund's market-cap focus to your risk appetite is a core building block of an Indian equity portfolio. When you read that a company is among India's most valuable, that ranking is market cap at work.