Why Is Microsoft Stock Up Today?

Microsoft shares are up 17.625% in Friday's session, the largest move among the mega-cap technology names, after fourth-quarter results in which Azure growth accelerated. That word is doing the work: Azure was already enormous, and a business of that size speeding up rather than slowing is unusual enough to reprice the stock.

What Microsoft reported

For the quarter ended 30 June 2026, Microsoft reported revenue of $90.0 billion, up 18%, and operating income of $40.6 billion, also up 18%. Azure and other cloud services revenue increased 43%. Reporting of the results notes that this accelerated from 40% in the prior quarter and that Azure passed $100 billion of revenue for the full fiscal year for the first time.

Growth accelerating at that scale is the headline. Most very large businesses decelerate simply because each additional percentage point requires more absolute revenue than the last. Azure adding a faster growth rate on a bigger base is the opposite of the normal pattern, and it is a direct read on how much computing capacity customers are willing to rent for AI work.

Two profit figures, and why they differ

Microsoft reported net income of $35.8 billion, up 31%, on a GAAP basis, and $35.3 billion, up 22%, on a non-GAAP basis. Diluted earnings per share was $4.81, up 32%, on a GAAP basis and $4.74, up 23%, non-GAAP.

GAAP means the standard accounting rules everyone must follow. Non-GAAP is the company's own adjusted view, and Microsoft states that its non-GAAP results exclude the impact from its investments in OpenAI. So the lower, adjusted figure is the one that strips out the effect of a stake whose value moves for reasons unconnected to selling software. When two profit numbers are published, the adjusted one is usually the better guide to the operating business — that is the entire reason the company bothers to publish it.

The part that shrank

Not everything grew. More Personal Computing revenue was $12.9 billion and decreased 4%, with Windows OEM and Devices revenue down 7%. This is the traditional PC-linked side of Microsoft. It is now small enough relative to cloud that a decline there does not offset Azure, which is itself a description of how much the company's centre of gravity has shifted.

How this connects to the rest of the tape

Microsoft's capacity commentary and Amazon's spending disclosure landed in the same reporting window, and together they answered the question that had been pressing on chip stocks all week: whether AI infrastructure spending was about to slow. Semiconductor shares repriced sharply on that read. This is the same catalyst viewed from the buyer's side of the transaction rather than the supplier's.

What to watch next

The concrete items are the next quarterly report and whether Azure's growth rate holds or reverts, Microsoft's capital-spending disclosures, since capacity is the stated limit on near-term cloud growth, and the 10-K filing for the fiscal year, which carries segment detail beyond the release. Any change in how the OpenAI investment is carried will also move the GAAP figure without the operating business changing.