Which company became the first public company valued at more than $4 trillion in 2025?

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Nvidia became the first public company valued at more than $4 trillion in 2025.

Nvidia's valuation reached the milestone as investors continued to price in enormous demand for processors used in artificial-intelligence data centers. Its rise extended a transformation that began when the company's graphics processors became widely used for machine learning.

Nvidia's business includes GPUs, networking equipment, systems, and software. Major cloud providers and technology companies purchase its hardware to build AI infrastructure. The company does not manufacture all of its own chips; it uses contract foundries and other suppliers for production and packaging.

A $4 trillion market cap means the market price of all outstanding shares exceeded $4 trillion at that moment. It does not mean Nvidia had that amount of cash or sales. Because rankings can change quickly, the exact date and whether a figure is intraday or closing should be checked when comparing companies.

Source: Wikipedia · fact-checked Oct. 2026

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