William Ackman

William Albert Ackman (born May 11, 1966) is an American billionaire hedge fund manager who is the founder and chief executive of Pershing Square Capital Management, an investment management company. He has been described as an activist investor. As of July 2025, Ackman's net worth was estimated at $9 billion by Forbes. A long-time donor to Democratic candidates and organizations, Ackman endorsed Donald Trump in the 2024 United States presidential election. source: https://en.wikipedia.org/wiki/William_Ackman