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Billionaire Ken Griffin Says NYC Mayor Zohran Mamdani "Put Me in Harm's Way"

Griffin said Mamdani’s video pushed him to expand in Miami and reconsider a planned New York tower, citing business climate concerns.

  • On Tuesday, hedge fund CEO Ken Griffin said at the Milken Institute Global Conference that NYC Mayor Zohran Mamdani's recent video prompted him to "double down" on his Miami expansion and reconsider a planned tower at 350 Park Avenue.
  • Mamdani posted a video on April 15 outside Griffin's Manhattan penthouse to promote a proposed annual fee on luxury properties worth more than $5 million whose owners do not live full-time in the city.
  • Griffin called the video "frightening," citing the 2024 murder of UnitedHealthcare CEO Brian Thompson, while Citadel COO Gerald Beeson asserted that Citadel's team members paid nearly $2.3 billion in taxes and Griffin donated $650 million to city charities.
  • Former NYC Mayor Eric Adams criticized Mamdani's actions on X, calling the video "irresponsible" and asking the mayor to apologize for trading "thousands of real, good-paying jobs" for social media likes.
  • Redevelopment plans for 350 Park Avenue would involve more than $6 billion in spending, creating 6,000 construction jobs and supporting more than 15,000 permanent jobs, though its future remains a "point of discussion" within Citadel.
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The New York Sun broke the news in New York, United States on Tuesday, May 5, 2026.
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