List: Billionaires spend big to stop Mamdani

Joe Gebbia, co-founder of Airbnb, spent a total of $2 million on the race, including $1 million each to repair the city and defend New York.

Gebbia currently serves as U.S. design director under President Donald Trump.

He has repeatedly signaled his opposition to Mamdani on X, writing in a recent message that Sliwa could be a “hero” by dropping out of the race and giving Cuomo an easier chance of beating Mamdani.

Gebbia is worth $7.9 billion, according to Forbes.

Bill Ackman, CEO of Pershing Square Capital Management, has invested $1.25 million in the race since June, including $1 million to defend New York and $250,000 to repair the city. That’s in addition to the $500,000 he donated to Fix the City before the primaries.

Ackman has been a vocal opponent of Mamdani and, like Gebbia, publicly encouraged Sliwa to drop out of the race.

Mamdani pointed the finger at Ackman, naming him among the billionaires opposed to his candidacy. He also has mocked the hedge fund manager for his “1,000 word tweets.”

Ackman is worth $9.2 billion, according to Forbes.

Ronald Lauder, whose parents founded the Estée Lauder Companies, donated $750,000 to Fix the City in September.

Lauder, a Republican, has long been a financial supporter of Cuomo. He is president of the World Jewish Congress.

Mamdani publicly named Lauder, alongside Ackman, to denounce the influence of billionaires.

“Billionaires like Bill Ackman and Ronald Lauder have invested millions of dollars in this race because they say we pose an existential threat,” Mamdani said at a rally last week. “And I’m here to admit something. They’re right. We represent an existential threat to billionaires who think their money can buy our democracy.”

Lauder is worth $4.9 billion, according to Forbes.

William Lauder, chairman of the board of directors of the Estée Lauder Companies and nephew of Ronald Lauder, has donated $500,000 to Fix the City since June.

That’s on top of the $500,000 he gave the group before the primaries.

Lauder is worth $1.7 billion, according to Forbes.

Casino mogul and real estate developer Steve Wynn donated $500,000 to Fix the City in October.

Wynn is a longtime GOP mega-donor and the former financial chairman of the Republican National Committee. He is worth $3.9 billion, according to Forbes.

Daniel Loeb, founder and CEO of New York-based Third Point, has donated a total of $350,000 since the primary: $100,000 to defend New York and $250,000 to repair the city.

Loeb also gave $250,000 to Fix the City before the primaries. He is worth $3.8 billion, according to Forbes.

Alice Walton, billionaire philanthropist and founding family member Walmartdonated $100,000 to Fix the City in August. She had already donated $100,000 to this same group in April, before the primaries.

Walton is worth $115.5 billion, according to Forbes.

Laurie Tisch, a billionaire philanthropist, donated $100,000 to Fix the City in October.

She is a member of the Tisch family, whose wealth comes from Loews Corporation.

Tisch also gave $50,000 to Fix the City before the primaries. Other members of the Tisch family gave the group a total of more than $1.3 million for the year.

Laurie Tisch is worth $1.6 billion, according to Forbes. The family as a whole is worth around $10.1 billion.