• Home
  • News
  • Fortune 500
  • Tech
  • Finance
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
HealthBill Ackman

Billionaire Bill Ackman joins Joe Rogan, Elon Musk, and Robert Kennedy Jr. in calling for a vaccine debate—though says he’s ‘not an anti-vaxxer’

Nicholas Gordon
By
Nicholas Gordon
Nicholas Gordon
Asia Editor
Down Arrow Button Icon
Nicholas Gordon
By
Nicholas Gordon
Nicholas Gordon
Asia Editor
Down Arrow Button Icon
June 20, 2023, 5:22 AM ET
Bill Ackman suggested that he had lost faith in conventional wisdom and that a public debate on vaccines would be the only way to reveal “truth.”
Bill Ackman suggested that he had lost faith in conventional wisdom and that a public debate on vaccines would be the only way to reveal “truth.”Sylvain Gaboury—Patrick McMullan/Getty Images

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.

Recommended Video

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. 

Ackman offered an additional $150,000, arguing that such a debate “would enable the public to better understand these issues.”

“If you are truly interested in saving lives, you need to further the public’s understanding of the truth about vaccines,” he continued later that day, referring to Hotez. “This is a debate you cannot walk away from.”

Then, on Monday evening, Ackman walked back his support for a debate between Hotez and Kennedy Jr.—instead claiming the doctor wasn’t a credible defender of vaccines, compared with the “extremely articulate” Kennedy, whom Ackman described as an “excellent choice for an antagonist in the vaccine discussion.”

It’s the latest twist in a now multiday controversy about whether it’s better to confront skepticism and, at worst, outright misinformation about COVID vaccines with moderation or open debate (even in skeptical spaces).

Billionaires fight over vaccines

The firestorm began Thursday after Rogan, host of the popular Joe Rogan Experience podcast on Spotify, released his interview with Kennedy, currently pursuing a long-shot bid for the Democratic presidential nomination. On the show, Kennedy trotted out debunked claims against vaccines (such as the argument that vaccines cause autism), and suggested that large pharmaceutical companies were suppressing his views. 

Then on Saturday, Rogan took aim at Hotez, who serves as dean of the National School of Tropical Medicine at Baylor College of Medicine, after the professor shared a critical article about the interview. The podcast host demanded that Hotez debate Kennedy on his show, offering $100,000 to charity as compensation.

Other (wealthy) commentators joined in. Tesla CEO and Twitter owner Elon Musk tweeted in support of Rogan, claiming that Hotez was “afraid of a public debate, because he knows he’s wrong.”

Mark Cuban, the star of Shark Tank and owner of new health care startup Cost Plus Drugs, accused Rogan and Musk on Sunday of being “disrespectful” to health care professionals.

“You are driven by self-interest”, Cuban tweeted. “Don’t lie to yourselves and all of us and tell us you are different.”

‘Conventional wisdom’

Ackman revealed himself to be a fan of Kennedy’s soon after the candidate’s interview with Rogan. “One of the most powerful and mind-opening interviews that I have ever heard,” he tweeted on Thursday. “I am intrigued to learn more.” 

Then, in several more tweets over the weekend, the hedge fund investor explained why he wanted a debate on vaccines, pointing to his lack of faith in conventional wisdom and media consensus. 

“The experts, the government, and conventional wisdom are often wrong,” Ackman tweeted on Saturday, arguing that people were wrong about “transient” inflation, how easily Ukraine would fall to a Russian invasion, and, perhaps controversially, the claim that COVID-19 did not escape from a laboratory in China. (The “lab leak” hypothesis is nowhere near accepted truth, with many scientists supporting a zoonotic origin for the coronavirus. The U.S. intelligence community remains divided on the question of COVID-19’s origins.)

Instead, Ackman claimed that “truth can emerge when two or more articulate and intelligent individuals in an open forum discuss and debate a controversial subject.”

Studies largely agree that COVID vaccines prevented millions of deaths and hospitalizations. Widespread vaccination in the U.S. prevented 18.5 million hospitalizations and 3.2 million deaths, according to a December study from the Commonwealth Fund. 

Almost 70% of the U.S. has received at least two doses of a COVID vaccine. Yet take-up of the newest COVID boosters, which target the BA.4 and BA.5 variants that dominated last year, is slow: Only 17% of the U.S. have gotten the booster, according to the Centers for Disease Control and Prevention.

Ackman, who tweeted on Saturday that he was “not an anti-vaxxer,” now thinks the campaign was too aggressive.

“Many lives may have been saved with reduced negative long-term effects on the economy, the education of our children, and our citizens’ mental health” had the U.S. listened to “skeptics” of either vaccination or lockdowns, Ackman wrote on Monday. 

Fortune Brainstorm AI returns to San Francisco Dec. 8–9 to convene the smartest people we know—technologists, entrepreneurs, Fortune Global 500 executives, investors, policymakers, and the brilliant minds in between—to explore and interrogate the most pressing questions about AI at another pivotal moment. Register here.
About the Author
Nicholas Gordon
By Nicholas GordonAsia Editor
LinkedIn iconTwitter icon

Nicholas Gordon is an Asia editor based in Hong Kong, where he helps to drive Fortune’s coverage of Asian business and economics news.

See full bioRight Arrow Button Icon

Latest in Health

HealthHealth
These toxic wild mushrooms have caused a deadly outbreak of poisoning in California
By The Associated PressDecember 7, 2025
15 hours ago
Schumer
Politicsnational debt
‘This is a bad idea made worse’: Senate Dems’ plan to fix Obamacare premiums adds nearly $300 billion to deficit, CRFB says
By Nick LichtenbergDecember 5, 2025
2 days ago
Best vegan meal delivery
Healthmeal delivery
Best Vegan Meal Delivery Services of 2025: Tasted and Reviewed
By Christina SnyderDecember 5, 2025
2 days ago
Retailmeal delivery
Best Prepared Meal Delivery Services of 2025: RD Approved
By Christina SnyderDecember 5, 2025
2 days ago
Gen Z
EconomyGen Z
America, meet your alienated youth: ‘Gold standard’ Harvard survey reveals Gen Z’s anxiety and distrust, defined by economic insecurity
By Nick LichtenbergDecember 4, 2025
3 days ago
Jensen Huang
SuccessBillionaires
Nvidia CEO Jensen Huang admits he works 7 days a week, including holidays, in a constant ‘state of anxiety’ out of fear of going bankrupt
By Jessica CoacciDecember 4, 2025
4 days ago

Most Popular

placeholder alt text
Real Estate
The 'Great Housing Reset' is coming: Income growth will outpace home-price growth in 2026, Redfin forecasts
By Nino PaoliDecember 6, 2025
2 days ago
placeholder alt text
AI
Nvidia CEO says data centers take about 3 years to construct in the U.S., while in China 'they can build a hospital in a weekend'
By Nino PaoliDecember 6, 2025
2 days ago
placeholder alt text
Economy
The most likely solution to the U.S. debt crisis is severe austerity triggered by a fiscal calamity, former White House economic adviser says
By Jason MaDecember 6, 2025
1 day ago
placeholder alt text
Economy
JPMorgan CEO Jamie Dimon says Europe has a 'real problem’
By Katherine Chiglinsky and BloombergDecember 6, 2025
1 day ago
placeholder alt text
Big Tech
Mark Zuckerberg rebranded Facebook for the metaverse. Four years and $70 billion in losses later, he’s moving on
By Eva RoytburgDecember 5, 2025
3 days ago
placeholder alt text
Politics
Supreme Court to reconsider a 90-year-old unanimous ruling that limits presidential power on removing heads of independent agencies
By Mark Sherman and The Associated PressDecember 7, 2025
16 hours ago
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map

© 2025 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.