Bill Ackman, manager of the Pershing Square hedge fund, revealed a high-profile move in his latest 13F filing for the quarter ended March 31, 2026: the initiation of a new position in Microsoft Corp. ($MSFT) valued at an impressive $2.1 billion. Concurrently, the fund sold its entire stake in Hilton Worldwide Holdings Inc. ($HLT), a position previously estimated at $870 million.

Ackman's significant entry into Microsoft signals strong confidence in the technology giant, a leader in cloud computing, software, and artificial intelligence. This move potentially reflects an assessment of future growth or attractive valuation in his view. The sale of Hilton, on the other hand, may indicate profit-taking or a shift in the fund's outlook on the hospitality sector.

For individual traders, moves by investors of Ackman's caliber offer insight into how large capital navigates the market. However, it's crucial to remember that 13F filings are published with a delay of up to 45 days, meaning these positions reflect the portfolio's status as of the end of the first quarter of 2026. This information should be viewed for educational purposes regarding leading fund strategies, not as an investment recommendation.