What is market capitalization?
Market capitalisation is the total market value of a company's shares, calculated as share price multiplied by the number of shares outstanding.
Market capitalisation — usually shortened to "market cap" — is the total market value of a company's outstanding shares. The formula is simple:
Market cap = current share price × number of shares outstanding.
If a company has 200 million shares trading at Rs 150 each, its market cap is Rs 30 billion. Market cap answers the question, "What is the whole company worth at today's price?" — which is far more meaningful than the share price alone. A stock priced at Rs 2,000 is not necessarily "bigger" or "more expensive" than one at Rs 20; the share count matters just as much.
Market cap is used to size and group companies. On the PSX, analysts speak of large-caps (the heavyweight banks, fertiliser, energy, and cement names), mid-caps, and small-caps. Large-caps tend to be more liquid, more stable, and more closely followed, while small-caps can offer higher growth but with greater risk and thinner trading.
A related and important idea is free-float market capitalisation, which counts only the shares available for public trading and excludes large blocks held by sponsors, directors, or the government. The KSE-100 Index is weighted by free-float market cap, so a company's index influence reflects its tradable size rather than its total size.
Market cap also drives index inclusion, fund weightings, and eligibility for certain investors. Many institutions can only buy companies above a minimum market cap to ensure they can enter and exit positions without moving the price.
It is important to understand what market cap is not. It is not the amount of cash a company holds, nor the price someone would pay to buy the entire business outright — an acquirer would also assume the company's debt and might pay a premium. For that, analysts use enterprise value, which adds net debt to market cap.
Because market cap moves with the share price, it changes every second the market is open and can swing on sentiment as much as on fundamentals. Still, it remains the quickest way to gauge a company's scale, compare it with peers, and understand its place in the index and the broader market.