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Largest tech companies by market cap 2025

Market capitalisation – or ‘market cap’ – shows a company’s total value, calculated by multiplying its share price by the number of shares in issue. It’s a quick way to compare the size of tech firms across global markets, whether you’re buying shares or trading share CFDs.

Here’s a look at the largest tech companies by market cap, as of 27 September 2026.

The largest tech companies by market cap October 2025

The table below ranks tech companies by market capitalisation in USD, alongside their latest share price and primary listing country – accurate as of 27 September 2026. Companies with the highest market caps appear at the top.

Rank	Company	Market cap	Country
1	NVIDIA	$5.47T	USA
2	Microsoft	$3.84T	USA
3	Apple	$5.06T	USA
4	Alphabet (Google)	$4.15T	USA
5	Amazon	$8.02T	USA
6	Meta Platforms (Facebook)	##MetaMarketCap##	USA
7	Broadcom	$1.67T	USA
8	TSMC	$2.34T	Taiwan
9	Tesla	$1.24T	USA
10	Oracle	$388.92B	USA

The information on this page is based on data from public company disclosures, including SEC filings and EDGAR. It is provided for informational purposes only and does not constitute investment advice or a recommendation to trade. While believed to be accurate as of the stated dates, figures may change without notice.

FAQ

What does market cap mean for traders?

Market cap (short for market capitalisation) represents the overall market value of a company's publicly traded shares, calculated by multiplying its current share price by its total shares in issue. It helps traders assess a company's relative size, market influence, and overall investment risk.

Are tech stocks considered high-risk investments?

Tech shares often carry risk due to their sensitivity to innovation, regulatory scrutiny, competition, and market volatility. While some large-cap tech companies may offer stability, early-stage or smaller firms tend to be more volatile.

What's the difference between market cap and enterprise value?

Market cap reflects the value of a company based purely on its share price and shares in issue. Enterprise value, however, provides a broader valuation by including debt, cash, and other balance-sheet items, offering traders a fuller picture of a company's overall worth.

Market caps of more companies

Explore company market cap with real-time data. Track valuation, stock performance, and financial insights.

Largest companies by market cap

Here’s a breakdown of the world’s largest companies by market cap

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Largest AI companies by market cap

We’ve looked at the largest publicly listed AI players by market capitalisation – calculated by multiplying a company’s share price by its total number of outstanding shares.

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Nvidia market cap

Nvidia (NVDA) is a US-based semiconductor giant and one of the largest companies by market capitalisation.

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Sony market cap

Sony (SONY) is a Japan-based conglomerate operating across electronics, gaming, entertainment and financial services.

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Blackrock market cap

Blackrock (BLK) is a US-based investment management firm best known for its iShares range of exchange-traded funds (ETFs).

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Nike market cap

Nike (NKE) is a US-based multinational company known for designing, marketing and selling athletic footwear, apparel and equipment.

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ASML market cap

ASML is a Netherlands-based technology company that plays a critical role in the semiconductor industry.

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SAP market cap

SAP is a Germany-based software firm that provides enterprise resource planning (ERP) solutions to organisations worldwide.

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