
Hedge fund investor Bill Ackman waded into an ugly fight between his fellow billionaires on whether there should be a high-profile debate on the effectiveness and safety of COVID vaccines.
On Saturday evening, the founder of Pershing Square Capital Management backed a pledge from podcast host Joe Rogan to donate $100,000 to charity if Dr. Peter Hotez, a professor and critic of vaccine misinformation on Rogan’s show, would debate presidential candidate and vaccine skeptic Robert Kennedy Jr.