List: Billionaires Spending Big to Stop Mamdani

Joe Gebbia, a cofounder of Airbnb, has spent a total of $2 million on the race, including $1 million apiece to Fix the City and Defend NYC.

Gebbia is currently serving as the Chief Design Officer of the United States under President Donald Trump.

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

Gebbia is worth $7.9 billion, according to Forbes.

Bill Ackman, the CEO of Pershing Square Capital Management, has poured $1.25 million into the race since June, including $1 million to Defend NYC and $250,000 to Fix the City. That’s on top of the $500,000 he gave to Fix the City before the primary.

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

Mamdani has singled out Ackman on the stump, naming him as among the billionaires who are opposed to his candidacy. He has also mocked the hedge fund manager for his “1000-word tweets.”

Ackman is worth $9.2 billion, according to Forbes.

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

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

Mamdani has publicly named Lauder, along with Ackman, when decrying the influence of billionaires.

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

Lauder is worth $4.9 billion, according to Forbes.

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

That’s in addition to the $500,000 he gave to the group before the primary.

Lauder is worth $1.7 billion, according to Forbes.

Steve Wynn, a casino mogul and real estate developer, gave $500,000 to Fix the City in October.

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

Daniel Loeb, the founder and CEO of New York-based firm Third Point, has given a total of $350,000 since the primary — $100,000 to Defend NYC and $250,000 to Fix the City.

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

Alice Walton, a billionaire philanthropist and a member of the family that founded Walmart, gave $100,000 to Fix the City in August. She previously gave $100,000 to that same group in April, before the primary.

Walton is worth $115.5 billion, according to Forbes.

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

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

Tisch also gave $50,000 to Fix the City before the primary. Other members of the Tisch family have given to the group, totaling over $1.3 million for the year.

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