company

Pershing Square Capital Management

Pershing Square Capital Management is an American hedge fund based in New York City. It specializes in activist investments. It buys shares in companies and uses that stake to pressure their management.

pershingsquareholdings.com

Founder and chief executive

Bill Ackman

Leadership

Bill Ackman, Founder and chief executive. Bill Ackman is a billionaire investor and founder of the hedge fund Pershing Square. In August 2026, he and his wife Neri Oxman announced the Ackman Oxman Institute, a planned Manhattan brain research, rehabilitation, recovery, human optimization and longevity center, anchored by a $400 million donation from Pershing Square stock.

Key facts

Founded: January 1, 2004source
Headquarters: New York Citysource
Starting capital: $54 million raised from Leucadia Nationalsource
Pershing Square Holdings IPO: October 2014; raised $2.73 billion on the Amsterdam Stock Exchangesource

Sources

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