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Top 10 most valuable companies in the world ranked – Apple, Amazon, Microsoft and more

byCalum Patterson
most valuable companiesApple / NVIDIA / Microsoft / Meta

Which companies are the biggest in the world? While not a simple question to answer, one way is to measure market capitalization, or more commonly, market cap.

Market cap is simply the total value of a company’s shares on the stock market, calculated by multiplying the share price by the number of outstanding shares.

As a result, Market cap can be considered a measure of how much investors believe a company is worth. It’s not the same as revenue or profit, and doesn’t account for assets and liabilities, but it’s a key indicator of scale and market influence.

NVIDIA 5090 GPUNVIDIA
Nvidia, known best for gaming GPUs, is the most valuable company in the world.

In mid-2025, tech and semiconductor firms lead the pack, driven by demand for AI, cloud computing, and consumer electronics. Here’s a look at the current top ten. Nvidia is the current leader, just ahead of Microsoft and Apple.

Top 10 most valuable public companies (August 2025)

1. Nvidia – 4.3 trillion USD

  • Industry: Technology
  • What they do: GPUs for AI, gaming, and data centers

2. Microsoft – 3.78 trillion USD

  • Industry: Technology
  • What they do: Software, cloud services, AI, enterprise tools

3. Apple – 3.45 trillion USD

  • Industry: Technology
  • What they do: iPhones, Macs, wearables, services

5. Alphabet (Google) – 2.56 trillion USD

  • Industry: Technology
  • What they do: Search, ads, YouTube, Android, cloud

4. Amazon – 2.46 trillion USD

  • Industry: E-commerce and Cloud
  • What they do: Online retail, logistics, AWS cloud services

6. Meta Platforms – 1.88 trillion USD

  • Industry: Social Media and VR
  • What they do: Facebook, Instagram, WhatsApp, metaverse tools

7. Saudi Aramco – 1.53 trillion USD

  • Industry: Oil and Gas
  • What they do: Crude oil production and refining

8. Broadcom – 1.45 trillion USD

  • Industry: Semiconductors
  • What they do: Chips for wireless, broadband, and enterprise systems

9. TSMC – 1.23 trillion USD

  • Industry: Semiconductors
  • What they do: Chip manufacturing for companies like Apple and Nvidia

10. Tesla – 1.1 trillion USD

  • Industry: Vehicles
  • What they do: Elon Musk’s electric car company

With NVIDIA and Microsoft very close in total market cap, they have traded places a few times for the top spot throughout 2025.

Apple was once the top of the pile, and was the first company to cross the 3 trillion mark, back in 2022, but has since been overtaken by Microsoft and NVIDIA, largely thanks to the AI boom.

Now, NVIDIA has become the first to hit 4 trillion.