Loading
Market Intelligence › Blogs And Updates
What market cap is, large cap vs mid cap vs small cap, how it is calculated — a complete guide.
Published by The Retail Trader · AUG 09, 2026 · Features
What market cap is, large cap vs mid cap vs small cap, how it is calculated — a complete guide.
The full form of market cap is Market Capitalization. It tells you the total market value of a company — that is, how much it would cost if you went to buy the entire company.
Market Cap = Current Share Price × Total Shares Outstanding
Example:
• Reliance Industries:
• Share price: ₹2,500
• Total shares: 676 crore
• Market cap: ₹2,500 × 676 crore = ₹16,90,000 crore (~₹17 lakh crore)
Meaning: the market value of the entire Reliance company is ₹17 lakh crore.
Classification in India:
• Mega Cap — Market Cap Range: > ₹1,00,000 crore, Examples: Reliance, TCS, HDFC Bank, Count: ~15
• Large Cap — Market Cap Range: ₹20,000-1,00,000 crore, Examples: Asian Paints, Titan, Bajaj Finance, Count: ~80
• Mid Cap — Market Cap Range: ₹5,000-20,000 crore, Examples: Coforge, Persistent, Dixon, Count: ~150
• Small Cap — Market Cap Range: ₹1,000-5,000 crore, Examples: Small industrials, regional companies, Count: ~500
• Micro Cap — Market Cap Range: < ₹1,000 crore, Examples: Penny stocks, new listings, Count: ~1,000+
SEBI Classification (Mutual Funds):
• Large Cap — Top 100 companies by market cap
• Mid Cap — 101st to 250th by market cap
• Small Cap — 251st onwards by market cap
Keep these eight points in mind:
• Size — Large Cap: Big (₹20K+ crore), Mid Cap: Medium (₹5-20K crore), Small Cap: Small (₹1-5K crore)
• Stability — Large Cap: High, Mid Cap: Moderate, Small Cap: Low
• Growth potential — Large Cap: Low-Moderate, Mid Cap: Moderate-High, Small Cap: High
• Risk — Large Cap: Low, Mid Cap: Moderate, Small Cap: High
• Liquidity — Large Cap: Very high, Mid Cap: High, Small Cap: Low
• Volatility — Large Cap: Low, Mid Cap: Moderate, Small Cap: High
• Returns (10Y) — Large Cap: 10-14%, Mid Cap: 14-18%, Small Cap: 15-22%
• Best for — Large Cap: Conservative, Mid Cap: Balanced, Small Cap: Aggressive
Keep these ten points in mind:
• 1 — Company: Reliance Industries, Market Cap (₹ Cr): ~17,00,000, Sector: Conglomerate
• 2 — Company: TCS, Market Cap (₹ Cr): ~13,00,000, Sector: IT
• 3 — Company: HDFC Bank, Market Cap (₹ Cr): ~12,00,000, Sector: Banking
• 4 — Company: Bharti Airtel, Market Cap (₹ Cr): ~9,00,000, Sector: Telecom
• 5 — Company: ICICI Bank, Market Cap (₹ Cr): ~7,00,000, Sector: Banking
• 6 — Company: Infosys, Market Cap (₹ Cr): ~6,50,000, Sector: IT
• 7 — Company: ITC, Market Cap (₹ Cr): ~5,50,000, Sector: FMCG
• 8 — Company: SBI, Market Cap (₹ Cr): ~5,00,000, Sector: Banking
• 9 — Company: HUL, Market Cap (₹ Cr): ~5,00,000, Sector: FMCG
• 10 — Company: Bajaj Finance, Market Cap (₹ Cr): ~4,50,000, Sector: NBFC
Data approximate as of August 2026
Strategy 1: Market Cap Weighted (Index Investing):
• The Nifty 50 is market cap weighted
• Top companies get more weight
• Buy an index fund = automatic market cap weighting
Strategy 2: Multi-Cap Portfolio:
• 50% — Category: Large Cap, Why: Stability, dividends
• 30% — Category: Mid Cap, Why: Growth + stability balance
• 20% — Category: Small Cap, Why: High growth potential
Strategy 3: Market Cap Rotation:
• Bull market → Small caps outperform
• Bear market → Large caps outperform
• Rotate according to the cycle
Market cap is only EQUITY value. The company's total value (Enterprise Value) = Market Cap + Debt - Cash.
In low float companies the price can be manipulated → market cap can be artificially high or low.
High market cap = good company? No! Some companies have a high market cap despite poor fundamentals (hype).
Keep these points in mind:
• 📌 MARKET CAP QUICK REFERENCE
• FORMULA:
• 📊 Market Cap = Share Price × Total Shares
• CATEGORIES:
• 📊 Mega Cap: > ₹1,00,000 crore
• 📊 Large Cap: ₹20,000-1,00,000 crore
• 📊 Mid Cap: ₹5,000-20,000 crore
• 📊 Small Cap: ₹1,000-5,000 crore
• 📊 Micro Cap: < ₹1,000 crore
• LARGE CAP:
• ✅ Stable, low risk, dividends
• ✅ 10-14% long-term returns
• ✅ Conservative investors
• MID CAP:
• ✅ Growth + stability balance
• ✅ 14-18% long-term returns
• ✅ Balanced investors
• SMALL CAP:
• ✅ High growth potential
• ✅ 15-22% long-term returns
• ✅ High risk, aggressive investors
• TOP 10 INDIA:
• 1. Reliance (~₹17L crore)
• 2. TCS (~₹13L crore)
• 3. HDFC Bank (~₹12L crore)
• 4. Bharti Airtel (~₹9L crore)
• 5. ICICI Bank (~₹7L crore)
• LIMITATIONS:
• ⚠️ Market cap ≠ total company value
• ⚠️ Doesn't reflect fundamentals
• ⚠️ Can be manipulated (low float)
Keep these five points in mind:
• What Is the PE Ratio?
• Nifty 50 Companies List 2026
• What Is EPS?
• What Is a Dividend?
• Sector Rotation India
The Retail Trader — educational market analysis. Not investment advice.
This article is for educational purposes only — it contains no buy or sell recommendation, no claim of guaranteed returns, and no advisory. Rules, rates and mechanics change from time to time at the exchanges, SEBI and RBI, so verify every number yourself with your broker or an official source.