Apple and Microsoft are now both worth more than $4T | TechCrunch

"Apple and Microsoft are now both worth more than $4 trillion each. This is the first time Apple's market capitalization has crossed the $4 trillion mark, making it the third company to ever cross the milestone, after Nvidia and Microsoft. Redmond first crossed the mark in July, but its valuation then dropped slightly to $3.9 trillion, before returning to $4 trillion on Tuesday on the back of news that it had signed a new agreement with OpenAI."

"Microsoft has also been thriving, thanks to demand for its Azure cloud service, which offers OpenAI's large language models as well as the computing power needed to train AI models. The company said on Tuesday that its roughly 27% stake in OpenAI was valued at about $135 billion. The tech giant reports its quarterly results on Wednesday. Alphabet, Google's parent company, is getting close to the $4 trillion milestone, too: It's currently trading at a market capitalization of $3.25 trillion."

Apple and Microsoft each surpassed $4 trillion in market capitalization, with Apple crossing the threshold for the first time and Microsoft returning to it after a brief dip. Apple's valuation advanced from $1 trillion in 2018 to $3 trillion in 2022, and recent iPhone 17 sales have lifted its stock ahead of Q4 2025 results. Microsoft benefited from strong demand for Azure and its partnership with OpenAI; the company valued its roughly 27% stake in OpenAI at about $135 billion. Alphabet trades around $3.25 trillion and is approaching the $4 trillion level as well.

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