Bill Ackman, founder of Pershing Square Capital Management, has been purchasing Microsoft stock since February 2026 [1].
The move signals a high-profile bet that the market has overreacted to concerns regarding artificial intelligence. By adding Microsoft to his portfolio, Ackman is positioning his fund to profit from the company's cloud infrastructure and AI integration at a time when some investors remain skeptical of the sector's valuation.
Ackman said that shares of the U.S.-based software company are currently undervalued [2]. He pointed to the growth of Azure, Microsoft's cloud computing platform, as a primary driver for the investment [1]. Additionally, the investor is betting on the company's aggressive infrastructure strategy, highlighted by a $190 billion capital-expenditure budget [1].
This acquisition marks the addition of a fourth "Magnificent Seven" stock to the Pershing Square portfolio [5]. The fund already holds significant positions in Alphabet, Amazon, and Meta. At the end of 2025, those three holdings combined represented over 39% of the portfolio [5].
The accumulation of Microsoft shares began in February, a period when AI-related fears were weighing on the stock price [1]. Ackman's strategy suggests a belief that the long-term utility of AI outweighs the short-term volatility or spending concerns currently affecting the tech sector [3].
Microsoft continues to expand its reach in the enterprise and consumer AI markets through its partnership with OpenAI, and the integration of Copilot across its software suite [2]. Pershing Square's entry into the stock reflects a broader trend of institutional investors seeking value in large-cap tech companies that possess the capital to dominate the AI era [4].
“Bill Ackman has been purchasing Microsoft stock since February 2026.”
Ackman's investment indicates a shift from cautiousness to conviction regarding the ROI of AI infrastructure. By leveraging a $190 billion capex plan as a bullish signal rather than a risk, Pershing Square is betting that the scale of Microsoft's cloud expansion will create a competitive moat that justifies a higher valuation, regardless of temporary market volatility.
