Key Takeaways
Two of the world's top hedge funds took opposing sides on Microsoft Corp.'s AI strategy in a high-stakes public debate, with Sir Christopher Hohn's TCI Fund Management selling $8 billion in stock as Bill Ackman's Pershing Square bought $2.4 billion.
"We think [Hohn] is wrong," Ackman said in a post on X, the platform formerly known as Twitter, arguing that fears about AI disrupting Microsoft's core business are "completely misplaced."
TCI, a shareholder since 2017, slashed its Microsoft position from 10% of its portfolio to just 1%, effectively ending a nearly decade-long investment. Conversely, Pershing Square disclosed the new multi-billion dollar stake in its latest 13F filing, noting the position was initiated at a forward price-to-earnings ratio of about 21 times.
The public disagreement between two of the world's most successful fund managers adds a new layer of uncertainty for Microsoft, whose stock has fallen more than 15 percent this year as investors question if massive AI spending will translate into profits.
In a letter to investors, Hohn detailed concerns that the rapid evolution of artificial intelligence could pose a structural threat to Microsoft's two main profit centers: the Office software suite and the Azure cloud platform. The fund fears new AI-native platforms could disrupt established workflows, eroding the market dominance of products like Word and Excel. The move to liquidate the position, even after a 15% drop in the share price year-to-date, shows the depth of TCI's conviction. While reducing its Microsoft exposure, TCI increased its investment in Google parent Alphabet Inc., making it the fund's largest technology holding.
Ackman directly countered TCI's thesis, arguing Microsoft's enterprise moat is "almost impossible to replicate." He pointed to the 450 million active users of the Microsoft 365 suite, which is deeply embedded in corporate workflows and security infrastructure. For the Azure cloud business, Ackman dismissed growth concerns, citing its 39% revenue growth in the last quarter. He framed Microsoft's decision to abandon exclusive rights to sell OpenAI's models not as a weakness, but as a strategic shift toward a more open, multi-model architecture that enterprise customers increasingly demand.
Ackman also highlighted a valuation point he believes the market is ignoring: Microsoft's 27% economic interest in OpenAI. Based on the AI firm's latest funding round, this stake could be worth as much as $200 billion, or 7% of Microsoft's market capitalization, which Ackman argues is not reflected in the current stock price.
This divergence signals a critical debate for the technology sector over whether AI will fortify incumbent leaders like Microsoft or empower a new generation of disruptors. Investors will be closely watching Microsoft's upcoming earnings reports for evidence of AI-driven growth in Azure and adoption of its Copilot services.
This article is for informational purposes only and does not constitute investment advice.
