Ken Griffin told CNBC on Tuesday that his hedge fund Citadel will add "far more jobs in Miami over the next decade", and he placed the blame squarely on New York City Mayor Zohran Mamdani. The billionaire financier said a recent Mamdani social media video, which used Griffin's $238 million Midtown penthouse as a backdrop to promote a proposed tax on luxury second homes, was the tipping point. Within days, a second financial giant, Apollo Global Management, signaled plans to open a 1,000-employee hub in Florida or Texas, matching its current New York headcount.

The message from Wall Street's biggest names is blunt: New York's political leadership is driving capital and jobs south.

And Mamdani isn't flinching. Asked about Griffin's comments on Wednesday during an unrelated event, the mayor said he wants "all New Yorkers to succeed, that includes business owners and entrepreneurs who create good-paying jobs, including Ken Griffin." Then he pivoted straight back to his core argument, insisting the city's tax system is "fundamentally broken" and that the wealthiest residents must "pay their fair share."

Griffin draws a direct line from the video to Miami

The sequence of events is hard to misread. Mamdani posted a social media video, Fox News reported it went up on April 15, promoting a tax on second homes valued above $5 million. The video singled out Griffin's record-breaking Midtown penthouse by name. Griffin's response was swift and personal.

In his CNBC interview, Griffin stated:

"We will add far more jobs in Miami over the next decade as an immediate and direct consequence of the mayor's poor decision here with respect to his posting of that video."

He went further, calling Mamdani's video "creepy and weird" and comparing the political climate in New York to what he experienced in Chicago before pulling Citadel's headquarters out of the Windy City in 2022.

"I think looking at what Mamdani just did to me, and more broadly is doing to the city of New York, is triggering of the trauma I went through in Chicago."

That Chicago comparison is not idle talk. Griffin spent 30 years building Citadel in Illinois. He watched the city, as he described it, undergo "a renaissance" before devolving under the leadership of Governor J.B. Pritzker, former Mayor Lori Lightfoot, and Chicago's current mayor. When he finally left, he took the firm's global headquarters, and a large share of its workforce, with him. Fox News reported that Citadel's Chicago office shrank from roughly 1,300 employees to only a few hundred as staff relocated to Miami.

Now Griffin says Mamdani has made clear that Citadel should "double-down on our bet in Miami" rather than New York. He also first threatened to scrap a $6 billion Park Avenue development planned for the firm, a project that, as Breitbart reported, could have created about 6,000 highly paid construction jobs.

Apollo follows Griffin's lead

Griffin is not alone. Apollo Global Management, a $900 billion Wall Street asset manager, has decided to open a new hub in either Florida or Texas with 1,000 employees, a figure that matches its existing New York workforce. The firm paid roughly $1.28 billion in total income taxes during 2025, according to the company. That kind of revenue doesn't just walk out the door quietly.

Marc Rowan, Apollo's billionaire leader, is among those reportedly setting sights elsewhere. The broader picture is one of an industry reassessing whether New York City's political environment justifies the cost of staying.

Citadel executives, meanwhile, contend that Griffin, the firm's principals, and team members have paid nearly $2.3 billion in city and state taxes over the past five years. Griffin has also directed $650 million in charitable gifts toward institutions including the Robin Hood Foundation, Memorial Sloan Kettering Hospital for Special Surgery, Success Academy charter schools, and MoMA. That is the kind of civic investment a city cannot replace with a catchy social media post.

The numbers behind the exit risk

The Partnership for New York City estimates that Mamdani's rhetoric risks the loss of 2,700 jobs in the financial industry and $168 million in annual state and city tax revenue. Those figures don't account for the ripple effects, the restaurants, the dry cleaners, the car services, the commercial landlords, and the thousands of ordinary workers whose livelihoods depend on a thriving financial sector in Midtown and lower Manhattan.

Zilvinas Silenas, president of the Empire Center for Public Policy, framed the stakes plainly:

"Without finance jobs Manhattan is a very expensive mall. It's going to be a lot less money collected. One percent of New York's taxpayers bring in half of all the income revenue. These finance jobs are why people come to New York. All of the sudden these jobs go away, New York is going to lose some of its luster and some of its spirit."

John Ketcham, a senior fellow at the Manhattan Institute, warned that Mamdani's desire to tax wealthy people could leave fewer of them in the city to tax at all. "New York City is losing its competitive edge and Mayor Mamdani makes it far less competitive," Ketcham said. He added that investors and job creators "have options and they will go where they're treated well," pointing to the dramatic expansion of the financial sector in Florida and Texas in recent years.

Pro-business lobbyist James "Cadillac" McMahon put it more colorfully: "The golden goose of New York City is heading South in Spirit Airlines."

Mamdani's pattern of confrontation

The Griffin clash fits a broader pattern. Mamdani has repeatedly chosen confrontation over conciliation, not just with the business community but with law enforcement and political allies. His dismissal of a snowball assault on NYPD officers as kids having fun drew sharp rebukes from police unions.

He has also drawn fire for fiscal ambitions that strain the city budget. Taxpayers learned they would face a $30 million bill for his first city-owned grocery store, raising questions about how a mayor so eager to tax the rich manages the public's existing dollars.

Governor Hochul is among New York leaders who have publicly and privately warned that Mamdani's actions will inspire wealthy people and employers to leave. That warning now looks less like political caution and more like prophecy. Griffin has been talking up Miami as a potential new Wall Street for years. Mamdani appears to have given him the final push.

Even on questions beyond economics, Mamdani has shown a tendency to dodge or deflect. He has refused to say whether AOC should challenge Schumer and ducked questions about Kamala Harris's 2028 prospects, suggesting a leader more comfortable with ideological slogans than with the hard trade-offs of governing a city that depends on private capital.

His decision to side with an arrested councilman who blocked police during a Brooklyn eviction further illustrates a mayor who reflexively positions himself against the institutions and individuals that keep New York functioning.

A familiar script with a predictable ending

Griffin's comparison to Chicago deserves more than a passing mention. He watched Illinois politicians raise taxes, tolerate rising crime, and treat the business community as a piggy bank rather than a partner. He warned them. They didn't listen. He left, and Chicago lost thousands of jobs, billions in investment, and a civic benefactor who had poured hundreds of millions into the city's institutions.

New York is now watching the same script unfold in real time. The mayor posts a video targeting a billionaire's penthouse. The billionaire announces he'll hire in Miami instead. A $900 billion asset manager starts scouting office space in Florida and Texas. The Partnership for New York City tallies the projected damage. And the mayor responds by insisting the tax system is "fundamentally broken" and that working people are "pushed to the brink."

No one disputes that New York faces affordability challenges. But the mayor's theory, that you solve those challenges by publicly antagonizing the people who generate half the city's income-tax revenue, has been tested before. It failed in Chicago. It failed in Connecticut. It failed in New Jersey. The wealthy don't sit still and absorb the hit. They move. And when they move, they take jobs, tax revenue, and charitable dollars with them.

Mamdani's response on Wednesday contained no indication he plans to change course. He acknowledged Griffin as a job creator, then immediately returned to the language of class warfare. That tells you everything about where this is headed.

You can call the golden goose greedy. You can film its penthouse for social media content. But you cannot be surprised when it flies south, and takes the eggs with it.