Apple and Microsoft Hit $4 Trillion Market Cap

Tech Giants Reach $4 Trillion Valuation

Both Apple and Microsoft have now achieved market valuations exceeding $4 trillion. This represents a significant milestone in the history of publicly traded companies.

Apple's Historic Achievement

Apple has, for the first time, surpassed a $4 trillion market capitalization. This makes it the third company globally to reach this benchmark, following Nvidia and Microsoft.

The company’s journey to this valuation has been rapid. Apple attained a $1 trillion valuation in 2018, followed by $2 trillion in 2020, and $3 trillion in 2022.

Recent gains in Apple’s stock price are linked to the successful launch of the iPhone 17 series. Initial sales data indicates that these new models are exceeding the performance of their predecessors.

Investors anticipate the release of Apple’s Q4 2025 earnings report on October 30th.

Microsoft's Continued Success

Microsoft also currently holds a valuation above $4 trillion. The company briefly dipped below this level in July, but quickly recovered.

This resurgence was fueled by the announcement of a new partnership agreement with OpenAI. The valuation returned to $4 trillion on Tuesday as a result.

A key driver of Microsoft’s growth is the strong demand for its Azure cloud service. Azure provides access to OpenAI’s large language models and the necessary computational resources for AI model training.

Microsoft disclosed on Tuesday that its approximately 27% ownership stake in OpenAI is currently valued at around $135 billion.

The company’s quarterly earnings will be reported on Wednesday.