Chapters in Market Foundations
Chapter 4 of 6 · 4 min read
Market cap: large, mid and small cap
Market capitalisation groups companies by total equity value and shapes risk, liquidity and coverage.
Market capitalisation is share price multiplied by shares outstanding. It is the market's price tag for the whole company, not its revenue or profit.
SEBI and AMFI classify the 100 largest companies by market cap as large caps, ranks 101 to 250 as mid caps and the rest as small caps. NSE indices such as Nifty 50, Midcap 150 and Smallcap 250 use float-adjusted market cap ranks for membership.
Trade-offs
- Large caps: more liquid, wider analyst coverage, usually smoother moves.
- Mid caps: faster growth potential with more cyclicality.
- Small caps: can move sharply either way, with liquidity and governance risk.
Market cap says nothing about whether a stock is cheap. Pair it with valuation ratios and quality metrics before drawing conclusions.
Key takeaways
- Market cap = price × shares outstanding.
- Bigger is not safer in every case, but it usually means better liquidity.
- Mix of caps in a portfolio changes both return potential and drawdown risk.
Put it into practice
Open the live page on Market Intelligence and see this concept on real data.
Keep learning
- Valuation ratios: P/E, P/B, EV/EBITDA, dividend yield · Fundamental Analysis
- Portfolio diversification for beginners · Portfolio & Risk Management
Education only, not investment advice. Updated 2026-10-09.