Bill Ackman

Founder & CEO, Pershing Square Capital Management

ActivistAUM $13.71BPositions 11Q1 2026

🏆 Clone Portfolio Track Record

Rank #55 of 69 by 3-year alpha vs SPY · mechanically replicating this book, rebalanced at filing dates

A strong clone record is a track record, not a forecast — tested across a decade it doesn't reliably repeat. See what actually holds up →

Analyst Take · Q1 2026

AI

Pershing Square's headline move: a new $2.09B Microsoft position (15.3% of the book) funded by a ~95% exit from Alphabet — a straight swap of one mega-cap compounder for another. AMZN got a 19% add; HLT is gone after a long hold. Eleven positions, 99.9% top-10: peak Ackman concentration.

Generated quarterly from the filing data itself — holdings, changes, sector mix and clone-performance rank. Not investment advice.

Bill Ackman is an activist investor and hedge fund manager who founded Pershing Square Capital Management. He is known for taking concentrated positions in a small number of companies and actively pushing for operational and strategic changes to unlock shareholder value.