Superinvestor · snapshot Q4 2025
Bill Ackman
Pershing Square Capital Management
qualityactivist
Activist running a 10-12 name concentrated long book in high-quality North American businesses. Often uses the activist bullhorn to unlock governance or strategic change.
Prism interpretation
“Concentrated quality activist — 10 names, high conviction, heavy consumer/services tilt.”
Concentration profile
Positions
7
Top 1
21%
Top 5
81%
Top 10
100%
Effective N
6.4
Holdings · 7
Curated summaryClick any ticker for the full Prism report.
How this book compares
1 of Bill Ackman's holdings also appear in at least one other tracked portfolio. Cross-held names are flagged above with the +N others mark. The full consensus book is available on the Grand Portfolio page.
Tracked alongside 29 other superinvestors.