Microsoft (MSFT) Stock: Bill Ackman’s Pershing Square Buys the Dip

TLDR

• Bill Ackman’s Pershing Square disclosed a new position in Microsoft, calling it a “highly compelling valuation”
• Ackman began buying Microsoft stock in February after it dropped following earnings
• Pershing Square USA, his new closed-end fund that debuted on the NYSE in April 2026, has also made Microsoft a core holding
• Microsoft stock has fallen more than 15% this year as investors worry about its AI competitive position against Google and Amazon
• The move follows earlier Pershing Square bets on Meta, Amazon, and Alphabet

Bill Ackman’s Pershing Square disclosed a new position in Microsoft (MSFT) on Friday, with Ackman calling the tech giant a “highly compelling valuation” after the stock dropped more than 15% this year.

Microsoft Corporation, MSFT

Ackman announced the stake on X, saying Pershing Square’s 13F filing — due later Friday — would reveal the new position. He said the firm began accumulating the stock in February, following a post-earnings selloff.

Microsoft stock was up around 1% on Friday after the news broke. The stock had already been under pressure in 2026, down more than 15% year-to-date heading into Friday’s session.

The decline has been driven largely by investor concerns that Microsoft’s early lead in the AI race is being eroded. Both Google and Amazon have made strong progress in their own AI efforts, raising questions about whether Microsoft’s head start still means much.

Pershing Square USA Also Takes a Position

Ackman’s new closed-end fund, Pershing Square USA, which began trading on the NYSE in late April 2026, has also added Microsoft as a core holding. That’s a separate vehicle from his main hedge fund.

The fund’s NYSE debut came just weeks before the Microsoft disclosure, putting two Pershing Square vehicles in the stock at the same time.

A Growing Big Tech Portfolio

The Microsoft bet fits a pattern. Ackman has been steadily building out a Big Tech book over the past few years.

In February 2026, he disclosed a position in Meta, backing the company’s AI push. Before that, he invested in Amazon, and Pershing Square made a bet on Alphabet back in late 2022.

Microsoft is the latest addition to that list. Ackman hasn’t disclosed the size of the Microsoft position.

The entry point in February came after Microsoft reported earnings and the stock pulled back. Ackman said the valuation at that level was too good to pass up.

Microsoft has since remained under pressure. The stock’s 15%-plus drop in 2026 reflects broader concerns about AI competition, not just a short-term dip.

Ackman did not provide a price target or comment on how long Pershing Square plans to hold the position.

The 13F filing, which covers Q1 2026 holdings, was expected to be submitted to the SEC on Friday and will reveal the full size of the stake.

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