Bill Ackman's Pershing Square reported a decline in its first-quarter 2026 holdings to roughly 13.71 billion dollars. The portfolio stayed heavily concentrated in a few major positions.
The 13F filing submitted on May 15 showed Brookfield, Amazon and Uber making up about half of the total assets. Pershing Square added a sizable new stake in Microsoft that accounts for roughly 15 percent of the portfolio while selling its entire Hilton Worldwide position.