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Billionaire Ken Griffin ghosts Mamdani after NYC ‘Tax the Rich’ video flap

Reported by New York Post
May 15, 2026· 2 min read
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Key Takeaways
  • • NYC Mayor Zohran Mamdani has reached out to Citadel CEO Ken Griffin through intermediaries seeking a meeting, but Griffin has not reciprocated contact as of May 15, 2026.
  • • Griffin publicly criticized Mamdani's "Tax the Rich" social media video filmed outside his $238 million Midtown penthouse, characterizing it as "creepy" and citing it as a factor in Citadel's decision to expand operations in Miami rather than New York.
  • • The confrontation centers on Mamdani's proposed luxury second-home tax policy and illustrates escalating tensions between New York's political leadership and major financial sector employers over wealth taxation.
  • • Mamdani downplayed the outreach effort, framing it as one of multiple standing invitations extended to Manhattan business leaders and emphasizing his willingness to engage in dialogue across points of disagreement.
Summary
NYC Mayor Zohran Mamdani has initiated outreach to billionaire Ken Griffin, CEO of hedge fund titan Citadel, in an attempt to repair relations following a public dispute over a tax policy video that drew sharp criticism from the financial sector executive. According to Mamdani's statement at a May 15 press conference, he has extended contact through intermediaries and proposed a direct meeting with Griffin, though the mayor acknowledged he has not yet received a response.

The underlying conflict stems from Mamdani's release of a social media video promoting a proposed luxury second-home tax in New York City. The video, which has become characteristic of Mamdani's communication style, was filmed outside Griffin's Manhattan residence—a record-setting $238 million penthouse in Midtown—and featured the property as a visual backdrop for his tax advocacy. Griffin responded by publicly calling the video "creepy" during a CNBC appearance and stated that the incident reinforced his decision to accelerate Citadel's expansion into Miami rather than deepen the firm's New York presence.

Mamdani characterized his outreach as part of a broader engagement strategy with New York's business leadership and framed the meeting invitation as an open dialogue opportunity. He stated at the press conference that such conversations serve multiple purposes beyond areas of agreement, suggesting he views the engagement as an opportunity to bridge ideological divides. However, as of the date of this report, Griffin has not accepted the invitation, effectively declining—at least temporarily—the mayor's reconciliation effort.

The episode reflects a widening divide between progressive municipal leadership focused on wealth taxation and the financial services industry, which views such policies as hostile to business operations and competitiveness. For institutional investors and family offices monitoring New York's regulatory environment, the incident underscores the political risk associated with aggressive tax proposals targeting high-net-worth individuals and suggests potential consequences for corporate capital allocation decisions within the state.

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Sources

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

New York Post Billionaire Ken Griffin ghosts Mamdani after NYC ‘Tax the Rich’ video flap