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

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.

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, as the first company ever to cross 5 trillion in market cap, just ahead of Microsoft and Apple.

Top 10 most valuable public companies (August 2025)

1. Nvidia – 5.1 trillion USD

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

2. Apple – 4 trillion USD

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

3. Microsoft – 4 trillion USD

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

4. Alphabet (Google) – 3.2 trillion USD

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

5. Amazon – 2.44 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. Broadcom – 1.79 trillion USD

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

8. Saudi Aramco – 1.67 trillion USD

• Industry: Oil and Gas
• What they do: Produce energy

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, and then 5 trillion.