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Citadel to Expand Miami Office Instead of Manhattan

Ken Griffin on Tuesday criticized a video by New York City Mayor Zohran Mamdani filmed outside his Central Park South penthouse. He said Citadel would double down on growth in Miami instead of Manhattan amid a proposed pied-à-terre tax.

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5 sources·May 5, 7:30 PM(23 days ago)·1m read
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Citadel founder Ken Griffin on Tuesday said his firm would expand its Miami operations rather than proceed with plans in Manhattan after New York City Mayor Zohran Mamdani filmed a video outside his midtown penthouse on Central Park South. " He said it raised safety concerns. "We went to Miami and revised our plan to make it a much bigger office building," Griffin stated.

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He added that Citadel would "double down" on Miami being the place for growth instead of Manhattan. The video followed Mamdani and Governor Kathy Hochul's announcement earlier this month of a proposed pied-à-terre tax. The measure is an annual surcharge on second homes valued above $5 million.

It is estimated to raise up to $500 million in annual revenue, according to the NYC comptroller. Under a previous proposal with a sliding scale rising to 4 percent on value above $25 million, Griffin's Central Park South penthouse would generate a surcharge of about $9 million a year. Citadel chief operating officer Gerald Beeson called the video spectacle shameful.

He signaled that the firm might pull out of its multibillion-dollar new Manhattan headquarters building. Vornado chief executive Steven Roth criticized Mayor Zohran Mamdani for singling out Ken Griffin in his bid to make the wealthy pay more taxes in New York City. Griffin had relocated Citadel from Chicago to Miami after feuding with the mayor and governor over taxes and crime.

Miami-Dade County had the third-largest loss of domestic population of any county in the country last year.

Key Facts

Griffin criticizes Mamdani video
Called Zohran Mamdani's video 'creepy weird' and 'frightening' and said it raised safety concerns.
Citadel revises Miami plans
Griffin said the firm revised its plan to make a much bigger office building in Miami and would double down on growth there instead of Manhattan.
Pied-à-terre tax details
Proposed annual surcharge on second homes above $5 million, estimated to raise up to $500 million yearly; Griffin's penthouse would face about $9 million under
Citadel executive response
Chief operating officer Gerald Beeson called the video spectacle shameful and signaled possible pullout from multibillion-dollar Manhattan headquarters.

Story Timeline

4 events
  1. Last year

    Miami-Dade County had the third-largest loss of domestic population of any county in the country.

    1 sourceThe Atlantic
  2. Past

    Ken Griffin relocated Citadel from Chicago to Miami after feuding with the mayor and governor over taxes and crime.

    1 sourceThe Atlantic
  3. Earlier this month

    Zohran Mamdani and Governor Kathy Hochul announced a proposed pied-à-terre tax on second homes valued above $5 million.

    1 sourceThe Atlantic
  4. Tuesday

    Ken Griffin amplified his criticisms of New York City Mayor Zohran Mamdani and said Citadel would double down on Miami.

    2 sourcesWSJ · Ken Griffin

Potential Impact

  1. 01

    The proposed pied-à-terre tax could generate up to $500 million in annual revenue for New York City.

  2. 02

    Citadel may abandon its planned multibillion-dollar new Manhattan headquarters building.

Transparency Panel

Sources cross-referenced5
Framing risk65/100 (moderate)
Confidence score85%
Synthesized bySubstrate AI
Word count250 words
PublishedMay 5, 2026, 7:30 PM
Bias signals removed2 across 2 outlets
Signal Breakdown
Loaded 2

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