Microsoft became the third U.S. company to reach a $1 trillion market capitalization in April 2019.
Microsoft crossed the threshold during trading on April 25, 2019, after reporting quarterly results that supported investor optimism. Its valuation had been transformed by the growth of cloud computing, especially the Azure platform, alongside subscriptions such as Microsoft 365 and continuing revenue from Windows, gaming, and enterprise software.
Apple and Amazon had already reached the milestone in 2018. Microsoft’s achievement illustrated how the largest technology companies were increasingly valued for recurring software and cloud revenue rather than only for traditional personal-computer sales.
Market capitalization changes continuously with the stock price. Microsoft later moved above and below $1 trillion, and its valuation eventually reached much higher levels. The 2019 milestone refers to the first intraday crossing, not a permanent valuation floor.