HomeMarketsSharesLargest AI companies by market cap April 2026

Largest AI companies by market cap 2026

Artificial intelligence is reshaping everything from search engines to chipmaking. But which companies are leading the charge in terms of market value?

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 – as of 19 October 2026:

The largest AI companies by market cap October 2026

Our rankings below display the top AI shares worldwide by market capitalisation as of 19 October 2026. Each company's market cap is shown in USD, alongside their latest share price and primary country of listing.

Rank

Company

Market cap

Country

1

NVIDIA $5.30T USA

2

Microsoft $3.97T USA

3

Alphabet (Google) $4.16T USA

4

Amazon $7.50T USA

5

Meta Platforms (Facebook) $1.77T USA

6

Broadcom $1.59T USA

7

TSMC $2.20T Taiwan

8

Oracle $369.68B USA
9 Palantir Technologies $462.46B USA
10 AMD $895.96B USA

FAQ

What is AI investing?

AI investing means gaining exposure to companies focused on artificial intelligence technology. This could involve buying shares directly or speculating on price movements using derivatives like CFDs – without owning the underlying asset. Prices tend to move in response to market sentiment, tech developments and broader economic events.

How do I trade AI stocks?

To trade AI share CFDs, you’ll need to open and verify an account with a regulated CFD provider. Once set up, you can deposit funds and access the trading platform. It’s important to understand the market, research the companies you’re interested in, and consider practising on a demo account before using real funds.

What should beginners consider when trading AI stocks?

Start by researching the company’s financial health, market position and innovation pipeline. Simpler strategies might help you manage risk while you learn. Make sure to use risk-management tools like stop-losses, and avoid trading more than you’re prepared to lose.

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Nvidia (NVDA) is a US-based semiconductor giant and one of the largest companies by market capitalisation.
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Sony (SONY) is a Japan-based conglomerate operating across electronics, gaming, entertainment and financial services.
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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 (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

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ASML is a Netherlands-based technology company that plays a critical role in the semiconductor industry.
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SAP is a Germany-based software firm that provides enterprise resource planning (ERP) solutions to organisations worldwide.
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