Microsoft shares surged 15% after AI revenue accelerated 43% and capex guidance ticked lower. Meta slumped 8.8% as profitability missed and spending plans held steady.
Microsoft rose 15% in heavy trading Wednesday after its fiscal fourth-quarter earnings showed the AI spending narrative finally producing returns investors can track, while Meta Platforms slumped 8.8% as its own results raised fresh questions about the payoff from billions in capital expenditure.
The divergent market reactions highlight a shift in how investors are judging the biggest AI spenders: they want evidence of revenue acceleration and margin discipline, not just promises of future demand. Microsoft delivered both. Meta, by contrast, kept its capex forecast unchanged and missed profit estimates, drawing a sharp markdown.
Microsoft's Case: AI Revenue Accelerating, Capex Forecasting Trimmed
Microsoft's Azure AI revenue grew 43% in the quarter, accelerating from the prior period. The company also slightly trimmed its full-year capex projection, an accounting-driven change tied to extending the assumed useful life of AI data center equipment, but one that offered a welcome break from the upward spending revisions rivals have reported.
"Microsoft reminded the market of what a diversified business looks like," said Lou Whiteman, a Motley Fool contributor. "They saw strong software results, real growth across the business. It isn't really about this quarter's results for any of these companies in the stock reaction. It's about the narrative of what the business will look like in two years because of all this AI excitement. Microsoft just presented a much better, clearer picture of the future."
Total revenue rose 18% year over year. The stock now trades around 25 times trailing earnings, a multiple that contributor Matt Frankel called attractive relative to an accelerating growth profile.
"I would argue that Microsoft is also probably the most bulletproof business in the Mag 7," Frankel said. "There's no moonshot story it's depending on, like robotaxis or chip pricing power staying at historically elevated levels. It's just a solid business with a rare combination of a relatively low valuation and growth that's accelerating in all the right ways."
Meta's Miss: Profitability Falls Short, Capex Forecast Unchanged
Meta's third-quarter revenue guidance came in roughly in line with estimates, but its operating margins missed. Analysts had hoped the company would signal at least a modest capex reduction; instead, the full-year spending plan held steady.
"Meta isn't showing investors yet that their money is being well spent," Frankel said. "To be fair, Meta is great at one thing, social media advertising. That business is still growing strong. But it's not what the bulk of their money is being spent on, and that's what's concerning people."
The core advertising business continues to grow at a double-digit clip, but investors are focused on the gap between Reality Labs spending and any visible revenue from the segment. The market's penalty was swift: an 8.8% drop erased roughly $120 billion in market value.
Why Microsoft Won the Narrative
Three factors separate the two reports:
Revenue acceleration in the AI segment – Microsoft demonstrated that its customer base is converting AI trials into recurring workloads. Azure AI's growth rate accelerated, not plateaued.
Capex efficiency – The company's tweak to data center depreciation schedules lowered reported capital spending without cutting actual investment. Analysts viewed it as a sign of operational maturity.
Diversification – Microsoft's enterprise software, productivity tools, and cloud contracts provide multiple revenue streams. Meta depends almost entirely on digital advertising, making it a concentrated bet on consumer engagement.
"Microsoft and Alphabet are the only two Mag 7s that really interest me right now, and Microsoft has a better multiple," Whiteman said. "Both of these companies have a lot more ways to win than most of the Mag 7, which are very good at one thing."
The Broader AI Capex Debate
The two earnings come as the "Magnificent Seven" face mounting scrutiny over a combined capital spending run rate that topped $250 billion in the past four quarters. Alphabet reported last week that Google Cloud revenue also accelerated, yet its stock fell as investors focused on rising costs. Nvidia, the primary supplier of AI chips, continues to report triple-digit growth, but concerns about customer concentration and the sustainability of demand have weighed on its shares.
Microsoft's report offers a template for how AI spenders can win market confidence: show that each dollar of capex is pulling through measurable cloud revenue, and provide visibility into when margins will expand.
Meta has not yet provided that visibility. The company's next major test is its October earnings report, when it will need to show that heavy spending in Reality Labs and AI infrastructure is translating into either higher ad pricing, new products, or both.
AlphaScala Data
MSFT carries an Alpha Score of 73 out of 100, rated Moderate, and closed at $499.99 on Wednesday, up 0.03% on the session. NVDA scores 78, rated Strong, and closed at $223.96, up 2.27%.
What Comes Next
Microsoft will host its annual shareholder meeting in November, where management is expected to provide updated AI revenue guidance. Meta reports fiscal third-quarter results in late October. Both companies face the same fundamental question: can the pace of AI investment justify the returns investors now demand?
"Microsoft just presented a much better, clearer picture of the future," Whiteman said. "The market's rewarding it."
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