Microsoft holds AI capex steady; stock surges as peers spend more

What happened

Microsoft kept its capital expenditure forecast unchanged at $190 billion (accounting change now labels it $175 billion) on Wednesday's earnings call, making it one of the first major data center giants to hold the line on AI spending. The stock surged about 8% on the news. By contrast, Alphabet raised its capex projection by $15 billion and Meta raised its midpoint by $2.5 billion; both saw their stocks fall sharply.

Why it matters

Investors have grown concerned about returns on massive AI infrastructure investments, and Wall Street has been watching to see whether tech giants would reduce spending plans during earnings season. Microsoft's decision to pause capex growth signals confidence that current infrastructure levels can sustain near-term AI demand without further acceleration, which the market rewarded. Rising memory chip costs have driven much of the capex increase across the industry—earlier research found such costs explain about 45% of capex growth by big cloud companies this year—so holding capex steady may imply Microsoft is actually pulling back slightly from building new capacity.

What to watch

Google, Amazon, Microsoft, and Meta collectively planned to spend more than $700 billion this year largely on AI data centers. Microsoft's restraint contrasts sharply with peers' continued acceleration; the divergence suggests the market may begin reassessing which strategy—aggressive buildout or measured growth—yields better returns.