Key Takeaways
- • Bill Ackman's Pershing Square Capital Management liquidated approximately 95% of its Alphabet position in Q1 2026, reducing holdings from 6.8 million shares to roughly 344,000 shares across both Class A and Class C stock.
- • Pershing Square deployed proceeds from the Alphabet exit into a new $2.09–$2.3 billion Microsoft stake, acquiring approximately 5.65 million shares during Q1 2026, establishing Microsoft as a core holding.
- • The portfolio reallocation reflects Ackman's conviction in Microsoft's valuation relative to peers, Azure cloud business expansion, and artificial intelligence positioning, while signaling reduced confidence in Alphabet's AI strategy and capital expenditure trajectory.
- • Beyond the Microsoft addition, Pershing Square simultaneously increased positions in Amazon (following a market selloff) and Meta Platforms, indicating a broader tactical shift among "Magnificent Seven" mega-cap technology stocks.
- • The moves also included reduced positions in secondary holdings including Uber, Brookfield, and Restaurant Brands, concentrating capital in higher-conviction AI and cloud infrastructure plays.
Summary
Bill Ackman disclosed a significant reallocation of Pershing Square Capital Management's technology portfolio in its Q1 2026 13F filing, marking a decisive pivot away from Alphabet and toward Microsoft and other artificial intelligence-exposed mega-cap equities. The filing, released May 15, 2026, showed Pershing Square had reduced its Alphabet Class C position from more than 6.1 million shares in Q4 2025 to approximately 312,000 shares by quarter-end, while Class A holdings declined from roughly 678,000 shares to 32,000 shares—a combined 95% reduction across both share classes.
The proceeds from the Alphabet liquidation funded a new Microsoft position valued at $2.09–$2.3 billion, consisting of approximately 5.65 million shares acquired during the first quarter. Ackman attributed the Microsoft investment to the company's attractive valuation following post-earnings volatility, its Azure cloud business trajectory, and what he characterized as superior artificial intelligence positioning relative to competing mega-cap technology firms. This represents a material bet on cloud computing infrastructure and generative AI adoption, sectors Ackman has identified as secular growth drivers.
The Microsoft addition was part of a broader technology sector rotation within Pershing Square's portfolio. Ackman simultaneously increased positions in Amazon following what he described as a market-driven "Liberation Day" selloff, and added to Meta Platforms holdings following periods of investor concern regarding AI-related capital expenditure requirements. These moves collectively signal Ackman's preference for companies perceived as better positioned to monetize artificial intelligence investments and scale cloud infrastructure efficiently. The portfolio shift also included reduced allocations to secondary positions in Uber, Brookfield, and Restaurant Brands, reflecting a concentration strategy toward higher-conviction technology and infrastructure themes.
The Alphabet exit represents a notable reversal from Ackman's prior conviction in the stock, which had been built following the 2022 artificial intelligence sector selloff. The timing and magnitude of the exit suggest Ackman's assessment of Alphabet's competitive position and capital allocation efficiency relative to Microsoft has shifted materially. This rebalancing underscores ongoing debate among institutional investors regarding which "Magnificent Seven" constituents offer superior risk-adjusted returns given current artificial intelligence monetization trajectories and valuation multiples.
The proceeds from the Alphabet liquidation funded a new Microsoft position valued at $2.09–$2.3 billion, consisting of approximately 5.65 million shares acquired during the first quarter. Ackman attributed the Microsoft investment to the company's attractive valuation following post-earnings volatility, its Azure cloud business trajectory, and what he characterized as superior artificial intelligence positioning relative to competing mega-cap technology firms. This represents a material bet on cloud computing infrastructure and generative AI adoption, sectors Ackman has identified as secular growth drivers.
The Microsoft addition was part of a broader technology sector rotation within Pershing Square's portfolio. Ackman simultaneously increased positions in Amazon following what he described as a market-driven "Liberation Day" selloff, and added to Meta Platforms holdings following periods of investor concern regarding AI-related capital expenditure requirements. These moves collectively signal Ackman's preference for companies perceived as better positioned to monetize artificial intelligence investments and scale cloud infrastructure efficiently. The portfolio shift also included reduced allocations to secondary positions in Uber, Brookfield, and Restaurant Brands, reflecting a concentration strategy toward higher-conviction technology and infrastructure themes.
The Alphabet exit represents a notable reversal from Ackman's prior conviction in the stock, which had been built following the 2022 artificial intelligence sector selloff. The timing and magnitude of the exit suggest Ackman's assessment of Alphabet's competitive position and capital allocation efficiency relative to Microsoft has shifted materially. This rebalancing underscores ongoing debate among institutional investors regarding which "Magnificent Seven" constituents offer superior risk-adjusted returns given current artificial intelligence monetization trajectories and valuation multiples.
Go deeper than the headline
Research every firm in this story, track the ones that matter and get the daily briefing — free for 7 days.