Billionaire hedge fund CEO Ken Griffin is significantly expanding his Miami development plans following a public dispute with New York City Mayor Zohran Mamdani regarding a new tax on luxury second homes in New York City [1]. Griffin, who leads Citadel, is moving forward with the addition of a 300-unit apartment building and a parking garage with over 1,400 spaces at the site of Citadel’s future headquarters in Miami’s Brickell financial district, according to recent filings [1]. Furthermore, Citadel has acquired all units in a 22-story condominium tower across from the Brickell building, with intentions to demolish it to further expand the Miami campus [1].
The expansion comes after a feud sparked by Mayor Mamdani's video targeting Griffin's $238 million Park Avenue penthouse as an example for the new annual fee on luxury properties worth more than $5 million whose owners do not reside full-time in the city [1]. Griffin criticized the video as a 'creepy and weird' personal attack, expressing concerns for his safety and questioning Mamdani's judgment [1]. In response, Citadel executives indicated that the company's plans for a new office space in Midtown Manhattan could be reconsidered due to what they described as Mamdani's 'not-so-business-friendly policies' [1].
Citadel COO Gerald Beeson stated in an April 23 memo that the redevelopment of 350 Park Avenue in New York would create 6,000 construction jobs and support over 15,000 permanent jobs, with a potential investment exceeding $6 billion, but noted that the project would proceed only 'if we move forward' [1]. Mayor Mamdani later softened his stance, publicly thanking Griffin for his contributions to the city [1].
Citadel had already relocated its headquarters from Chicago to Miami in 2022, and the latest acquisitions and development plans further solidify the hedge fund's growing presence in South Florida [1].
CONCLUSION
Ken Griffin's expansion in Miami underscores his commitment to growing Citadel's presence in South Florida, following tensions with New York City officials over new taxes on luxury properties. The developments highlight shifting dynamics in the financial sector's geographic preferences and signal potential economic impacts for both Miami and New York.