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Head-to-head comparison

Bill Ackman vs Jeffrey Ubben

Bill Ackman
Pershing Square Capital
Q8/10
"Concentrated bets on high-quality businesses with activist catalysts."
8 positionsSince 2004
Jeffrey Ubben
ValueAct Capital
Q8/10
"Constructive activism. Partner with management, not fight them."
5 positionsSince 2000
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Recent moves — Q1 2026

Latest quarter activity for each manager.

Bill Ackman
No tracked moves for Jeffrey this quarter.

Data sourced from 13F filings with the SEC. Overlap in top positions is a concrete consensus signal, not investment advice.