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Bill Ackman just made a massive bet on Microsoft at Friday’s dip, sensing a rare opportunity. His Pershing Square accumulated a $2.4 billion stake since February when fears about Azure growth pounded the stock. Investors overlooked Microsoft‘s true value, Ackman argues, while the software giant doubles down on AI.
🔥 Quick Facts
- Stake Size: $2.4 billion position disclosed on May 15, 2026
- Entry Point: 21x forward earnings, a compelling market valuation Ackman exploited
- Stock Performance: Down 15% year-to-date, off 26% from July 2025 peak
- Building Strategy: Started accumulating in February following earnings disappointment
A Contrarian Bet on Microsoft‘s Misunderstood Value
Ackman painted Microsoft as fundamentally sound despite market skepticism. The billionaire hedge fund manager positioned his bet as analogous to past winning positions in Alphabet, Amazon, and Meta. Each had sold off amid AI concerns before rebounding sharply.
Investors have become overly focused on near-term Azure growth deceleration and worries about whether Microsoft‘s hefty AI spending will deliver returns. Ackman disagreed with this pessimism, saying the enterprise software ecosystem remains deeply resilient. Microsoft stock bounced 3% on Friday following his announcement, signaling market validation of his thesis.
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Microsoft stock falls as Bill Ackman builds stake amid Azure growth concerns
Why Azure Growth Continues to Matter
Azure expanded 40% year-over-year in Q3 fiscal 2026, suggesting sustained momentum in cloud despite Wall Street‘s hand-wringing. Total Microsoft revenue reached $82.89 billion, growing roughly 18% and beating analyst expectations. The earnings beat came alongside management‘s guidance that Azure expansion would remain robust.
Ackman supported Microsoft‘s planned $190 billion capital spending increase for 2026, framing it as growth investment rather than wasteful spending. He contended the company is building a data center infrastructure moat that competitors cannot easily replicate. This long-term perspective separates his outlook from short-term traders.
The OpenAI Position Could Be a Hidden Gem
Ackman estimated Microsoft‘s roughly 27% ownership stake in OpenAI at approximately $200 billion in value. This stake alone could justify Microsoft‘s stock price if properly recognized by the market. Investors currently undervalue this AI partnership, giving Ackman confidence in the upside potential.
| Metric | Value |
| Q3 Revenue | $82.89 Billion |
| Revenue Growth | 18% YoY |
| Azure Growth | 40% YoY |
| EPS (Q3) | $4.27 (beat estimate) |
“We are encouraged to see Microsoft prioritizing its R&D efforts and investment in Copilot, its own AI agent embedded across M365, with direct involvement from CEO Satya Nadella. We believe these efforts will translate into improved product velocity and greater customer adoption over time.”
— Bill Ackman, Founder and CEO, Pershing Square
Why M365 Remains Microsoft‘s Fortress
Ackman emphasized that Microsoft 365 (M365) is deeply embedded across enterprise operations and far more resilient than investors appreciate. The productivity suite benefits from Microsoft‘s unmatched security, compliance, and identity infrastructure. Competitors struggle to replicate this moat.
Copilot monetization adds another dimension, with early pricing at approximately $30 per user monthly potentially unlocking massive incremental revenue. This AI feature integration directly addresses investor concerns that Microsoft cannot extract value from AI investments. The hedge fund sees M365 becoming more sticky, not less, over the next 2-3 years.
What Comes Next for the Stock?
Ackman‘s timing could prove prescient if Azure growth accelerates and Copilot adoption soars. Wall Street fears may dissipate once the market sees concrete evidence of AI monetization. Will Microsoft prove Ackman right, or will skeptics ultimately win out?
