Key Takeaways
- • Bill Ackman's Pershing Square initiated a new Microsoft position in February 2026, accumulating shares after the stock declined approximately 15% year-to-date despite posting earnings growth exceeding 20% and strong profitability metrics.
- • Ackman completely liquidated his long-held Alphabet position during Q2 2026, using proceeds from the Google parent sale to fund the Microsoft investment; Alphabet shares were originally purchased three years prior at an average price of $94 and traded at $392 on the announcement date.
- • The Microsoft thesis centers on two core enterprise technology franchises: Azure cloud division and M365 Office productivity suite featuring a $30-per-month Copilot AI assistant, positioning the company as a primary beneficiary of accelerating business AI adoption.
- • Ackman characterized Microsoft's valuation as "highly compelling" following the stock decline, viewing the market as underestimating Azure growth potential and undervaluing the company's $190 billion capital expenditure commitment to AI infrastructure buildout.
- • The investment represents Pershing Square's broader strategy of acquiring technology companies with dominant long-term growth trajectories trading at attractive valuations, with holdings to be detailed in SEC filings on May 16, 2026.
Summary
Billionaire investor Bill Ackman executed a significant portfolio reshuffling in mid-May 2026, establishing a substantial new position in Microsoft while completely exiting his long-standing investment in Alphabet. According to Reuters and confirmed through Ackman's statements on social media platform X, Pershing Square Capital Management began accumulating Microsoft shares in February 2026 following a notable decline in the technology company's stock price.
Microsoft's stock performance through mid-2026 presented a sharp disconnect between valuation and operational performance. Despite the company posting earnings growth exceeding 20% and demonstrating strong overall profitability, shares had fallen approximately 15% year-to-date. This drawdown was largely attributable to market concerns regarding slower cloud revenue growth and the company's substantial capital expenditure trajectory. Ackman identified this valuation disconnect as a compelling opportunity, characterizing Microsoft's current valuation as "highly compelling" given the market's apparent underestimation of the company's growth potential.
The investment thesis rests on Microsoft's dual dominance in enterprise technology. Ackman emphasized the strength of Azure, the company's cloud division, alongside M365, the Office productivity suite now monetizing its Copilot AI assistant at $30 per month. These franchises position Microsoft at the center of accelerating enterprise AI adoption globally. Rather than viewing the company's $190 billion capital expenditure budget as a competitive disadvantage, Ackman's positioning suggests confidence that this infrastructure investment will generate substantial long-term returns as business customers deploy AI solutions at scale.
To fund the Microsoft position, Pershing Square liquidated its entire Alphabet stake during the second quarter of 2026. Ackman had acquired Alphabet shares three years prior at an average cost basis of $94 per share; the liquidation occurred with Alphabet Class C stock trading at $392, representing substantial gains on the original position. This strategic reallocation reflects Ackman's assessment that Microsoft offers superior risk-adjusted return potential relative to Alphabet in the current technology landscape.
The Microsoft investment represents Pershing Square's continued focus on acquiring market-leading technology companies trading at valuations that the fund believes undervalue their long-term growth prospects. The full scope of both positions and the timing of the transactions will be disclosed in regulatory filings submitted to the U.S. Securities and Exchange Commission on May 16, 2026.
Microsoft's stock performance through mid-2026 presented a sharp disconnect between valuation and operational performance. Despite the company posting earnings growth exceeding 20% and demonstrating strong overall profitability, shares had fallen approximately 15% year-to-date. This drawdown was largely attributable to market concerns regarding slower cloud revenue growth and the company's substantial capital expenditure trajectory. Ackman identified this valuation disconnect as a compelling opportunity, characterizing Microsoft's current valuation as "highly compelling" given the market's apparent underestimation of the company's growth potential.
The investment thesis rests on Microsoft's dual dominance in enterprise technology. Ackman emphasized the strength of Azure, the company's cloud division, alongside M365, the Office productivity suite now monetizing its Copilot AI assistant at $30 per month. These franchises position Microsoft at the center of accelerating enterprise AI adoption globally. Rather than viewing the company's $190 billion capital expenditure budget as a competitive disadvantage, Ackman's positioning suggests confidence that this infrastructure investment will generate substantial long-term returns as business customers deploy AI solutions at scale.
To fund the Microsoft position, Pershing Square liquidated its entire Alphabet stake during the second quarter of 2026. Ackman had acquired Alphabet shares three years prior at an average cost basis of $94 per share; the liquidation occurred with Alphabet Class C stock trading at $392, representing substantial gains on the original position. This strategic reallocation reflects Ackman's assessment that Microsoft offers superior risk-adjusted return potential relative to Alphabet in the current technology landscape.
The Microsoft investment represents Pershing Square's continued focus on acquiring market-leading technology companies trading at valuations that the fund believes undervalue their long-term growth prospects. The full scope of both positions and the timing of the transactions will be disclosed in regulatory filings submitted to the U.S. Securities and Exchange Commission on May 16, 2026.
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