Billionaire investor Bill Ackman is building a new position in Microsoft, arguing that the technology giant now trades at what he described as a “highly compelling valuation” after a sharp decline in its share price this year.
Ackman disclosed Friday that his hedge fund, Pershing Square Capital Management, will formally reveal the new investment later in the day. He also said Microsoft has recently become a core holding in Pershing Square USA, the closed-end fund Pershing launched on the New York Stock Exchange last month.
The move deepens Ackman’s growing push into large-cap technology and artificial intelligence-related investments at a time when many investors are reassessing the winners and losers of the AI boom.
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Microsoft shares have fallen more than 15% this year as investors question whether the company’s once-commanding lead in artificial intelligence is beginning to narrow amid aggressive competition from rivals, including Google and Amazon.
The decline has created what Ackman appears to view as a rare entry point into one of the world’s most strategically important technology companies. His investment also signals that some major institutional investors believe Wall Street may have become overly pessimistic about Microsoft’s long-term AI position following months of market rotation away from earlier AI leaders.
Ackman Expands His Big Tech Strategy
The Microsoft investment fits into a wider shift at Pershing Square. Historically known for concentrated bets on consumer, restaurant, and industrial businesses, Ackman has increasingly pivoted toward dominant technology platforms as artificial intelligence reshapes the global economy.
Earlier this year, Ackman disclosed a new investment in Meta Platforms, arguing the company stood to benefit significantly from AI-driven improvements across advertising, recommendation systems, and user engagement.
Last year, Pershing also established a position in Amazon, while the firm previously invested in Alphabet in late 2022 as generative AI began transforming investor expectations around cloud computing and digital infrastructure.
The Microsoft stake therefore completes a notable pattern: Pershing is increasingly concentrating exposure in companies viewed as foundational infrastructure providers for the AI economy.
That strategy reflects how artificial intelligence has altered the logic of technology investing. Rather than focusing purely on consumer applications, many investors now see the biggest opportunities residing in companies controlling cloud infrastructure, enterprise software ecosystems, data-center networks, and advanced AI platforms.
Microsoft sits near the center of all four.
Microsoft’s AI Leadership Faces New Questions
For much of the past three years, Microsoft was widely viewed as the clear corporate winner of the generative AI boom.
Its multibillion-dollar partnership with OpenAI gave the company privileged access to the technology behind ChatGPT and helped position Microsoft as an early AI leader across cloud computing, productivity software, and enterprise services. The alliance also accelerated growth for Microsoft’s Azure cloud platform as corporations rushed to integrate generative AI tools into business operations.
But investor enthusiasm has cooled in recent months. Markets have grown increasingly concerned that Microsoft’s early lead may not be as durable as initially expected.
Google has rapidly improved its Gemini AI ecosystem and strengthened integration across search, cloud computing, and enterprise products. Amazon has also accelerated investment in AI infrastructure through Amazon Web Services, while aggressively expanding its own generative AI offerings.
At the same time, OpenAI itself has become more independent, signing partnerships beyond Microsoft and loosening some of the exclusivity that once defined the relationship. Those developments have fueled investor concerns that Microsoft could face intensifying competitive pressure just as AI spending reaches historic levels.
The company is also spending enormous sums to maintain its position. Microsoft has committed well over $100 billion toward AI-related investments, infrastructure expansion, and OpenAI support, underpinning the extraordinary capital intensity of the AI race.
That spending has contributed to broader investor anxiety about whether current AI monetization can justify the enormous infrastructure costs now being absorbed by major technology companies.
Why Ackman May See an Opportunity
Ackman’s interest likely reflects a belief that the market is undervaluing Microsoft’s long-term advantages even amid rising competition. Despite recent share-price weakness, Microsoft remains deeply entrenched across enterprise software, cloud computing, cybersecurity, and productivity applications, sectors expected to become increasingly AI-driven over the next decade.
The company also retains one of the strongest commercial distribution networks in the technology industry. Unlike many AI startups, Microsoft already controls widely used enterprise platforms, including Windows, Office, Teams, Azure, and GitHub, giving it direct access to corporate customers integrating AI into daily operations.
That installed base could become a major competitive advantage as AI adoption shifts from experimentation toward large-scale enterprise deployment.
Microsoft is also quietly pursuing a broader AI diversification strategy. Beyond OpenAI, the company has been investing in internal AI research teams and exploring acquisitions of emerging AI startups to reduce dependence on any single partner.
The company recently intensified efforts to recruit elite AI researchers and secure next-generation model architectures as competition for talent across Silicon Valley reaches unprecedented levels.
Ackman may therefore view the recent selloff less as a sign of structural weakness and more as a temporary repricing after the market’s earlier AI euphoria.
Hedge Funds Reposition Around AI Infrastructure
The Pershing move comes amid a wider repositioning underway among hedge funds and institutional investors. After the initial surge in AI-related stocks, many investors have shifted focus from speculative AI applications toward companies viewed as long-term infrastructure winners.
That includes semiconductor firms, cloud providers, data-center operators, and software platforms capable of monetizing AI adoption at scale.
Microsoft remains one of the few companies with meaningful exposure across nearly every layer of that ecosystem. Its cloud-computing business powers AI deployment, its productivity software integrates generative AI tools into enterprise workflows, and its developer platforms remain central to software engineering operations worldwide.
Those structural advantages may help explain why Ackman believes the current valuation has become attractive after the stock’s decline. His decision to make Microsoft a core holding in Pershing Square USA is also notable because the closed-end fund was launched in part to provide investors with concentrated exposure to high-quality, long-duration businesses.
By placing Microsoft at the center of the portfolio, Ackman is effectively signaling confidence that the company will remain one of the dominant beneficiaries of the AI-driven transformation of the global economy. The investment is also another indication that even as Wall Street debates which companies are leading the AI race, large institutional investors continue viewing artificial intelligence as the defining long-term investment theme in technology markets.