Market capitalisation – or ‘market cap’ – reflects the total value of a company’s outstanding shares, calculated by multiplying the share price by the number of shares. It’s a useful way to compare the size of listed companies across sectors and regions.
Here’s a breakdown of the world’s largest companies by market cap, as of 22 September 2025:
The rankings are based on reported market cap in USD, along with the latest available share price and each company’s primary listing country – as of 22 September 2025. A higher market capitalisation results in a higher rank.
|
Rank |
Company |
Market cap |
Country |
|
1 |
NVIDIA | $4.29T | USA |
|
2 |
Microsoft | $3.85T | USA |
|
3 |
Apple | $3.51T | USA |
|
4 |
Alphabet (Google) | $3.09T | USA |
|
5 |
Amazon | $2.47T | USA |
|
6 |
Meta Platforms (Facebook) | $1.92T | USA |
|
7 |
Saudi Armco | $1.49T | Saudi Arabia |
|
8 |
Broadcom | $1.72T | USA |
|
9 |
TSMC | $1.36T | Taiwan |
|
10 |
Tesla | $1.28T | USA |
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