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 22 September 2025.
The table below ranks tech companies by market capitalisation in USD, alongside their latest share price and primary listing country – accurate as of 22 September 2025. Companies with the highest market caps appear at the top.
|
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 |
Broadcom | $1.72T | USA |
|
8 |
TSMC | $1.36T | Taiwan |
|
9 |
Tesla | $1.28T | USA |
| 10 | Oracle | $858.60B | USA |
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