New York City Mayor Zohran Mamdani now wants to talk. After posting a viral video on Tax Day standing outside billionaire Ken Griffin's Manhattan penthouse to promote a new levy on the wealthy, Mamdani said Friday that his team has reached out to the Citadel CEO to arrange a sit-down. Griffin, as of Mamdani's last public comment, has not responded.
"We reached out to set up a meeting," Mamdani told reporters, as reported by FOX Business. "We're still waiting to hear."
The mayor framed the outreach as part of a broader effort to engage business leaders. But the context tells a different story. Griffin didn't just brush off the video, he called it a "personal attack" reflecting a "profound lack of judgment," and his company is now openly reconsidering a $6 billion Manhattan development that would create thousands of jobs. What Mamdani pitched as populist theater may be costing New York real money.
On April 15, Mamdani posted a video filmed outside Griffin's 24,000-square-foot penthouse, the same property Griffin purchased in 2019 for $238 million, the most expensive residential sale in U.S. history. In it, the mayor promoted a proposed pied-à-terre tax on luxury properties worth more than $5 million whose owners do not live full-time in the city.
Mamdani's narration was pointed and personal. He singled out Griffin by name and property value:
"This is an annual fee on luxury properties worth more than $5 million whose owners do not live full-time in the city, like this penthouse, which hedge fund CEO Ken Griffin bought for $238 million."
The mayor had pledged during his campaign to raise taxes on wealthy New Yorkers, and this video was the opening salvo. His office later defended the approach, saying Mamdani "wants all New Yorkers to succeed" but that "our tax system is fundamentally broken." The mayor's office added that the "status quo is unsustainable and unjust" and called for "meaningful tax reform that includes the wealthiest New Yorkers contributing their fair share."
That framing, the billionaire as villain, the tax hike as justice, is familiar progressive rhetoric. But it collided with a billionaire who has the means, the motive, and the track record to walk away.
Griffin responded forcefully. Speaking at the Milken Conference in Los Angeles earlier this month, the Citadel founder said Mamdani's video reaffirmed his decision to "double down" on business in Miami rather than New York. He described the video as "creepy and weird," Fox News reported, and reiterated plans to expand Citadel's presence in Florida.
"Mamdani has made it very clear, New York does not welcome success."
That line alone should worry every working New Yorker whose paycheck depends on the city remaining a place where capital wants to be. Griffin didn't stop at rhetoric. He told CNBC that Citadel would "add far more jobs in Miami over the next decade as an immediate and direct consequence of the mayor's poor decision," the New York Post reported.
A spokesperson for Griffin told FOX Business that the CEO "cares deeply about New York City and welcomes thoughtful, serious conversations about the policies that can grow the city's economy and create more opportunity for all New Yorkers." The spokesperson then drew a sharp line:
"Reckless political theater serves no purpose and undermines the future of one of the world's most important cities."
That's a polite way of saying: the mayor picked a fight he can't afford to lose, and he's losing it.
The stakes extend well beyond bruised egos. Citadel's Chief Operating Officer Gerald Beeson told the Daily Mail that Griffin is considering backing out of a planned $6 billion redevelopment at 350 Park Avenue in Midtown Manhattan. That project, Breitbart reported, would create roughly 6,000 construction jobs and support more than 15,000 permanent positions.
Beeson did not mince words about the mayor's approach:
"It is shameful that he used Ken's name as the example of those who supposedly aren't carrying their fair share of the burdens associated with New York City's often costly and wasteful spending."
Citadel also noted that its principals and team members have paid nearly $2.3 billion in city and state taxes over the past five years, Newsmax reported. That figure puts Mamdani's "fair share" rhetoric in a different light. The company is already one of the largest individual tax contributors in New York. Singling out its CEO by name and address for a social media stunt was not a policy argument, it was a provocation.
Mamdani's early tenure has already been marked by a pattern of broken promises on housing and homelessness. The Griffin standoff adds another dimension: a mayor whose populist instincts are actively repelling the investment his city desperately needs.
Griffin's warning is not hypothetical. He already left one major American city over similar grievances. In 2022, he moved Citadel's headquarters from Chicago to Miami, citing concerns about crime, taxes, and hostile policy. Fox News drew a direct parallel, noting that Chicago lost not just a corporate tenant but a civic benefactor who had donated hundreds of millions to local institutions.
New York may be watching the same script unfold. Griffin is building a new headquarters in Miami. He's expanding in Florida. And he's telling anyone who will listen that Mamdani's approach makes New York a less attractive place to invest.
The mayor, meanwhile, is dealing with a budget crisis he has called "historic", one severe enough that he delayed his own budget deadline and turned to Albany for help. Driving away a $6 billion development while scrambling for revenue is not a strategy. It's a contradiction.
The mayor's Friday comments tried to recast the situation. He described the outreach to Griffin as part of a broader effort to engage business leaders, saying it was "an open invitation" extended to many executives.
"I'm there to listen and there to have a conversation that goes beyond places of agreement, but perhaps places of disagreement to hear honest reflection and critique, without putting any precondition on the nature of that conversation."
The words are conciliatory. But they arrived only after the backlash became impossible to ignore. Mamdani did not reach out to Griffin before filming a video outside his home. He did not consult with Citadel before naming its CEO in a populist tax pitch. The conversation he now says he wants came only after Griffin publicly questioned whether New York welcomes success, and after Citadel signaled it might pull billions in investment from the city.
This is not the first time Mamdani has been forced to retreat. He backed down on a separate property tax hike after fierce taxpayer backlash earlier in his term. The pattern is consistent: announce a bold progressive policy, absorb the consequences, then scramble to contain the damage.
Critics have raised broader questions about the ideological framework driving Mamdani's governance. His tax-the-rich messaging has drawn sharp commentary from figures across the political spectrum, including investor Kevin O'Leary, who argued the mayor's tax agenda is accelerating wealth flight from the city.
The people who stand to lose the most from this standoff are not billionaires. Griffin can relocate. He already has. The people who cannot relocate are the construction workers who would have built the 350 Park Avenue tower. The office workers who would have filled it. The small business owners in Midtown who depend on foot traffic from major employers.
Mamdani's video was designed to play well on social media. It did. But governing a city of eight million people requires more than viral clips. It requires an environment where employers want to hire, builders want to build, and investors believe their capital won't be weaponized for political content.
Griffin's spokesperson called Mamdani's approach "reckless political theater." Citadel's COO called it "shameful." Griffin himself said the mayor made it "very clear, New York does not welcome success." These are not fringe voices. This is one of the largest hedge funds in the world, already one of New York's biggest tax contributors, telling the city's mayor that his conduct is driving them away.
And the mayor's response? He's waiting by the phone.
Mamdani wanted to make Ken Griffin the face of inequality. Instead, he may have made himself the face of an ideology that mistakes hostility toward success for a governing philosophy. New York's working families will be the ones who pay the tab.
You can tax the rich, or you can chase them out. You cannot do both, and the mayor is learning that the hard way.
