Top 10 most valuable companies worldwide in July 2025: NVIDIA makes history as it nears a $4T market cap; overtakes Microsoft & Apple

Nvidia now accounts for 7% of the S&P 500. Nvidia, Microsoft, Apple, Amazon and Alphabet together make up 28% of the index.

Presently, Microsoft holds the position of the second most valuable company, with a market capitalisation of $3.7 trillion, followed by Apple at third, with a market value of $3.19 trillion.

A competitive race among major players, including Microsoft, Amazon, Meta Platforms, Alphabet, and Tesla, to establish AI data centres and dominate this emerging technology sector has driven significant demand for NVIDIA’s advanced processors.

Market capitalisation is an important indicator for investors and analysts, serving as a measure of a company’s overall valuation and representing the total market value of its outstanding shares.

Companies with the largest market caps are widely regarded as the most valuable entities in the corporate sphere. Below are the top 10 most valuable companies by market capitalisation.

Top 10 most valuable companies in the world by market cap | July 2025 Edition

Notably, while the majority of the leading companies are based in the technology sector in the United States, the list also features Saudi Aramco, the oil industry giant headquartered in Saudi Arabia, and TSMC, a semiconductor leader from Taiwan.

In early 2025, Tesla, led by Elon Musk, briefly joined this elite group but fell to the 11th spot as of July 2025. Meanwhile, India’s Reliance Industries Ltd saw a notable rise, climbing from the 73rd to the 52nd largest company in the world based on market capitalisation, early this month.