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William Albert Ackman (born May 11, 1966) is an American billionaire hedge fund manager who is the founder and chief executive officer of Pershing Square Capital Management, a hedge fund management company. His investment approach has made him an activist investor. As of June 2024, Ackman's net worth was estimated at $9.3 billion by Forbes.
Ackman is a prolific philanthropist and signatory of The Giving Pledge, committing to give away at least 50% of his wealth by the end of his life to charitable causes. As of 2024, he is one of the largest donors to Planned Parenthood.
A longtime donor to Democratic candidates and organizations, Ackman endorsed former President Donald Trump in the 2024 United States presidential election. Ackman has expressed public support for Israel's actions in the Israel–Hamas war and has demanded the publication of the names of Harvard students involved in signing a letter condemning statements from Israeli officials.

William Ackman

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