Quick Read – Ackman built ~$2.4 billion stakes in both MSFT and AMZN, with Amazon now Pershing Square’s second-largest holding, funded partly by trimming Alphabet. – Both trades share the same playbook: buy dominant AI infrastructure leaders after the market punishes them for…
avy but demand-backed capital spending. – Tepper, Klarman, and Al Gore’s fund are also accumulating Amazon, while Microsoft carries a 45.6% operating margin and 54 analyst buy ratings. – Act now: the analyst who called NVIDIA in 2010 just named his top 10 AI stocks — and Microsoft didn’t make the cut. Grab the names FREE today
Bill Ackman’s Pershing Square Capital Management began accumulating Microsoft (NASDAQ:MSFT) shares in February 2026 after the stock slid on its fiscal second-quarter report. Impressively, Akman has since built the stake to roughly $2.4 billion by the end of May 2026, funded in part by trimming his Alphabet (NASDAQ:GOOG) position. Ackman disclosed the position in a lengthy post on X ahead of Pershing Square’s quarterly 13F filing, describing Microsoft as a “core holding.” Separately, Fortune reported on June 25, 2026 that Pershing Square has been building an Amazon (NASDAQ:AMZN) stake from scratch since roughly mid-2025, and that the roughly $2.4 billion position is now the firm’s second-largest holding.
What Ackman Bought, and Why It Matters Two mega-cap tech names now sit near the top of a portfolio historically built on concentrated, activist-flavored positions in consumer and real estate names. The Microsoft entry was timed to weakness, with MSFT stock trading right around $392 per share (down roughly 20% on a year-to-date basis), and well below its 200-day moving average of $444.22. Ackman’s public rationale is that Microsoft stock had de-rated to about 21x forward earnings on what he framed as overblown fears about Azure durability and Microsoft’s competitive position in AI.