Bill Ackman
Pro-Israel-policy donor; recent Trump endorser. Cross-partisan in giving but explicitly Israel-aligned in messaging.
Who they are.
Founder of Pershing Square Capital, an activist hedge fund. Once a centrist Democrat, Ackman pivoted hard in late 2023 — leading a public campaign that forced the resignation of Harvard President Claudine Gay over campus protests, and endorsing Donald Trump in 2024. He has since become a top-tier pro-Israel mega-donor with an unusually large social-media megaphone.
The chain.
- AIPAC PACMajor donor
- United Democracy ProjectMajor donor
- Preserve America PAC2024 donor (Trump-aligned)
- Claudine Gay (Harvard president)Sustained public-pressure campaign; no direct PAC spend2024 · Gay resigned January 2024
- Donald Trump (R, President)$1M+ direct + bundled support2024 · Won 2024
- Pro-Israel House primary challengersBundled into UDP / AIPAC PAC2024 · Most won 2024 primaries
The targets.
On the record.
“I have come to believe that President Trump can be the right President for our country at this moment.”
“I am pro-Israel and I make no apologies for that.”
Sources.
Questions about Bill Ackman.
Did Bill Ackman get Claudine Gay fired?
Ackman led the most visible donor-side pressure campaign against Harvard President Claudine Gay following her December 2023 congressional testimony on campus antisemitism. He used Pershing Square's name, his personal X/Twitter following, and public statements about donor pullbacks. Gay resigned on January 2, 2024. Ackman was one of several large Harvard donors involved.
Why did Ackman switch from Democrat to Trump?
Ackman publicly cited the response of universities and the Democratic left to the October 7, 2023 Hamas attack and the subsequent Gaza war as the breaking point. He had previously supported Democrats including Mike Bloomberg and centrist primary challengers. He endorsed Trump in July 2024 after the assassination attempt.
What is Ackman's net worth?
Forbes estimates Ackman's net worth at roughly $9 billion as of 2024, primarily from Pershing Square Capital Management, the activist hedge fund he founded in 2004.