Market Capitalisation (Market Cap)

The total market value of a company's outstanding shares — share price multiplied by shares outstanding.

Market Capitalisation (Market Cap) — The total market value of a company's outstanding shares — share price multiplied by shares outstanding.

Key facts

Category
Market structure
Definition
The total market value of a company's outstanding shares — share price multiplied by shares outstanding.
Formula
Market Cap = Share price × Shares outstanding
Live example
/research/stock/AAPL
Last updated
2026-06-17

Formula

Market Cap = Share price × Shares outstanding

Interpretive bands

< $2B
Small-cap. Higher growth potential but higher volatility.
$2B – $10B
Mid-cap. Established but still growth-oriented.
$10B – $200B
Large-cap. Most S&P 500 members.
> $200B
Mega-cap. Largest 25-30 US companies.

How IndexAlpha uses Market Capitalisation (Market Cap)

On the Company Profile card. Used in screening filters and for sector / cap-band comparison.

See it live

The Market Capitalisation (Market Cap) metric shows up on every IndexAlpha research page. See it now on AAPL — or research any stock to view its Market Capitalisation (Market Cap).

Related terms

Common questions

What is Market Capitalisation (Market Cap)?

The total market value of a company's outstanding shares — share price multiplied by shares outstanding.

How is Market Capitalisation (Market Cap) calculated?

Market Cap = Share price × Shares outstanding

How does IndexAlpha use Market Capitalisation (Market Cap)?

On the Company Profile card. Used in screening filters and for sector / cap-band comparison.

Sources