Bill Ackman Just Made A Massive Tech Stock Bet

Bill Ackman (Trades, Portfolio) is making another major bet on Big Tech, revealing that Pershing Square will disclose a new stake in Microsoft MSFT in its upcoming 13F filing while calling the software giant highly compelling at current prices.

Ackman also said his newer fund, Pershing Square USA, has already made Microsoft one of its core holdings, signaling strong conviction even as parts of Wall Street have recently grown more cautious around the company's AI and cloud outlook.

In a lengthy post on X, Ackman argued that Microsoft's recent stock weakness has been driven largely by fears surrounding two issues: whether Microsoft 365 can hold up against increasingly powerful AI workplace tools like Anthropic's Claude Cowork, and whether Azure's growth can remain durable as Microsoft's relationship with OpenAI continues evolving.

But Ackman believes investors are underestimating how deeply embedded Microsoft's ecosystem has become inside large enterprises. He argued that Microsoft 365 is not just another software product, but part of the operational backbone for many companies through its integration across identity management, security, compliance and workflow infrastructure.

Ackman also defended Microsoft's massive AI spending push, saying the company's projected $190B 2026 capex budget should be viewed as long term growth investment rather than reckless spending. He compared Microsoft's AI infrastructure buildout to similar aggressive investments being made by Amazon (AMZN), Alphabet GOOG GOOGL and Meta (META).