Microsoft first reached a $1 trillion market capitalization in 2019, according to a closing share price.
Microsoft closed above $1 trillion on April 25, 2019, after reporting strong quarterly results. The milestone reflected investor confidence in its cloud-computing business, especially Azure, as well as continuing demand for Office software and enterprise services.
Microsoft had once been viewed mainly as a personal-computer software company. Under CEO Satya Nadella, who became chief executive in 2014, the company emphasized cloud services, subscriptions, artificial intelligence, and cross-platform enterprise products.
Apple, Amazon, and Alphabet had already reached the level before Microsoft. The wording about a closing price matters because a company may briefly cross a market-cap threshold during trading without ending the day above it.