American hedge fund manager and founder of Pershing Square Capital Management — known for high-conviction, concentrated long and short positions and for high-profile activist campaigns against companies including Herbalife.
Developed the model of the public activist investor who makes investment theses public through media — using the attention economy to amplify investment positions — and whose nine-year short against Herbalife (eventually unsuccessful) became the most watched public investment battle of the 2010s.
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