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NewsFox News PoliticsMay 6, 2026United States

Citadel CEO Ken Griffin and NYC Mayor Zohran Mamdani in Tax Policy Dispute

Citadel founder Ken Griffin is publicly clashing with New York City Mayor Zohran Mamdani over proposed taxes on luxury properties. The dispute mirrors Griffin's previous conflict with Chicago officials, which preceded his decision to move his firm's headquarters to Miami in 2022.

taxationeconomic developmentcorporate relocationurban policywealth inequality
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Why It Matters

The conflict highlights potential risks to New York City's tax base and corporate presence, as the city's leadership considers new taxes on high-value real estate while major financial firms evaluate their long-term operational locations.

Key Facts

  • Ken Griffin moved Citadel's global headquarters from Chicago to Miami in 2022.
  • Citadel's Chicago office workforce decreased from approximately 1,300 employees to a few hundred following the relocation.
  • Mayor Zohran Mamdani proposed an annual tax on second homes worth more than $5 million.
  • The proposal was promoted in an April 15 video filmed outside Ken Griffin's $238 million penthouse.
  • Citadel is currently reassessing plans for a $6 billion office tower project at 350 Park Avenue in New York.
  • Ken Griffin cited crime and economic policy concerns as primary reasons for his departure from Chicago.
  • Griffin purchased his penthouse at 220 Central Park South in 2019 for $238 million.

Who's Mentioned

personZohran Mamdani“New York City Mayor currently proposing taxes on luxury second homes.”dollar_amount$238 million“Purchase price of Griffin's penthouse at 220 Central Park South.”personJB Pritzker“Governor of Illinois.”dollar_amount$50 billion“Estimated net worth of Ken Griffin.”personLori Lightfoot“Former Mayor of Chicago.”organizationCitadel“Global hedge fund and market-making firm.”dollar_amount$6 billion“Proposed cost of Citadel's office tower at 350 Park Avenue.”personKen Griffin“Founder of Citadel hedge fund, worth approximately $50 billion.”other24,000“Square footage of the penthouse property.”