Glossary · Investing Basics
Market Capitalisation
The total market value of a company's outstanding shares, calculated by multiplying the share price by the number of shares in circulation and used to classify companies as large-cap, mid-cap, or small-cap.
01—What is Market Capitalisation?
The definition — and what it means in practice.
Market capitalisation (market cap) is the total market value of a company’s outstanding shares. It is calculated by multiplying the current share price by the number of shares in circulation. Because it is price-based, market cap moves daily even when the company issues no new shares. Investors and analysts commonly group companies by market cap into large-cap, mid-cap, and small-cap to compare businesses of broadly similar scale.
Market cap matters because company size often affects liquidity, volatility, and how the stock fits into a portfolio. Larger companies may trade more actively and be included in major indices, while smaller companies can be more sensitive to news and trading flows. Market cap is also used to compare valuations across firms, but it is not the same as a company’s profits, assets, or “true” worth.
If a company has 100 million shares and the share price is Rs 50, its market capitalisation is Rs 5 billion.
Market Capitalisation = Share Price × Shares Outstanding
Use the current market price and total shares in circulation (not just free-float).
- Market cap measures market value, not book value, profits, or cash in the business.
- It changes when the share price moves and when shares outstanding change (e.g., new issue, buyback).
- Used to classify companies as large-, mid-, or small-cap for comparison and screening.
- Size can influence liquidity and volatility, but does not by itself indicate quality or fair value.
- Useful for portfolio diversification and for understanding index composition.
02—How market capitalisation works on the PSX
The Pakistan-specific rules, conventions, and numbers.
On the Pakistan Stock Exchange (PSX), market capitalisation is a standard way to rank and filter listed companies, for example when reviewing “top market cap” lists or building a watchlist. Because PSX prices can move within daily price limits (circuit breakers) around the last day close (LDCP), market caps can shift meaningfully even within a single session as prices update.
PSX indices provide another practical touchpoint. For instance, the KSE-100 Index is a free-float benchmark, meaning index weights depend on the portion of shares readily available for trading rather than total shares outstanding. That makes a company’s free-float market cap relevant for index exposure, while total market cap remains useful for comparing overall company size and for basic screening on PSX tools.
03—Common misconceptions
Where investors most often get this wrong.
A higher market cap means the stock is safer.
Market cap only indicates size. Risk also depends on business fundamentals, leverage, liquidity, and how the price reacts to news and trading activity.
Market cap equals the money invested in the company.
It is a valuation based on the latest traded price multiplied by shares outstanding. It is not cash sitting with the company and can change without any new investment.
If the share price doubles, the company has doubled its profits.
Profits may not change at all. Market cap reflects what the market is currently willing to pay per share, which can move ahead of or away from earnings.
04—Using market capitalisation on BSL
Where this term shows up across the platform — with live data.
05—Frequently asked questions
What investors ask about market capitalisation on the PSX.
Frequently Asked Questions
Multiply the current share price by the number of shares outstanding (in circulation). If either the price changes or the share count changes, the market capitalisation changes.
Market cap uses total shares outstanding. Free-float market cap uses only shares considered available for trading (excluding strategic or tightly held portions) and is commonly used in free-float indices.
Yes. As trades occur and the market price updates, market capitalisation updates too. It can also shift on days when share counts change due to corporate actions.
Market cap is a form of valuation for the equity (ordinary shares) only. It does not include the company’s debt, and it does not measure intrinsic value or earnings power by itself.
Yes. A change in market price alone changes market capitalisation. Market sentiment, liquidity, and broader market moves can affect price without any new company announcement.
06—Related terms
Keep building the picture.
Shares of a large, well-established, financially stable company with a long track record of reliable performance. On the PSX, names like OGDC, HBL, and Lucky Cement are commonly regarded as blue-chip stocks.
A statistical measure tracking the performance of a selected group of securities. The KSE-100 Index is Pakistan's primary benchmark, representing the 100 largest companies listed on the PSX by market capitalisation.
The portion of a company's shares available for public trading, excluding shares held by promoters, directors, or strategic investors. A higher free float generally means better liquidity.
The process of determining the current worth of a security or company. Common valuation methods include discounted cash flow analysis, P/E ratio comparison, and price-to-book analysis.
The ease with which a security can be bought or sold without significantly affecting its price. High-liquidity stocks have large trading volumes and narrow bid-ask spreads.
One of the most widely used valuation metrics. Calculated by dividing the current share price by earnings per share. A high P/E may suggest the market expects strong future growth; a low P/E may indicate undervaluation or declining prospects.
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