Who is William Ackman?
Bill Ackman is an American Jewish billionaire investor and hedge fund manager who has emerged as a prominent public figure in recent years for his outspoken support of Israel and advocacy against antisemitism. Ackman is the founder and CEO of Pershing Square Capital Management, a hedge fund he established in 2004. According to the firm, Pershing Square manages approximately $20 billion in assets and maintains a concentrated equity portfolio of about 10 companies, including Chipotle, Uber, and Amazon.
He first rose to prominence through high-profile investments, including his short position against bond insurer MBIA and his role in the rescue of mall operator General Growth Properties. Ackman is also known for his strong public presence on social media. As of December 2025, he has more than 2 million followers on X. In 2024, he endorsed Donald Trump after decades of supporting Democratic candidates.
According to The Jerusalem Post, Ackman ranked third on the 2024 “Most Influential Jews” list. In an interview with the outlet, he said the October 7 attack was “a wake-up call on the importance of Israel and the omnipresence of antisemitism.”
William Ackman’s net worth
According to Forbes, Bill Ackman’s real-time net worth stood at $9.5 billion as of December 14, 2025, ranking him No. 345 among the world’s richest people. Ackman’s wealth is primarily derived from his stake in Pershing Square Capital Management and the firm’s long-term investment strategy.
William Ackman’s wife
Bill Ackman is married to Neri Oxman, an Israeli-born architect, computational designer and artist. According to The New York Times, Oxman won the Cooper Hewitt Design Award for Interaction Design in 2018.
Oxman, 49, is a former MIT professor whose work spans architecture, science, and design. She has authored more than 150 scientific publications and inventions, according to public records of her academic work, and her creations have been featured in the permanent collections of institutions including the Museum of Modern Art, Centre Pompidou, the MAK Museum of Applied Arts, the FRAC Collection for Art and Architecture, and the Cooper Hewitt Smithsonian Design Museum.
She is also the founder and CEO of Oxman, a company that invents “multi-scale products and environments through radical ways of thinking and making that flow across hardware, software, and wetware,” as described on the company’s website. Her work has reportedly attracted interest from artists and public figures, including Björk and Brad Pitt.