Citadel has warned that a $6 billion [1] Manhattan tower project may be jeopardized following a public dispute with New York City Mayor Zohran Mamdani.

The conflict highlights a growing tension between the city's executive leadership and the billionaire investors who fund major urban developments. If the project is canceled, the city could lose a massive capital investment, and the associated economic activity.

The feud began when Mayor Mamdani filmed a "tax-the-rich" video outside the residence of Citadel founder Ken Griffin. The video targeted Griffin's $238 million [2] Manhattan penthouse as part of a campaign to tax wealthy second-home owners.

Griffin said the video was "creepy and frightening" [3]. He said the mayor's actions "put me in harm's way" [4]. These security concerns have led Citadel to reconsider its commitment to the city's skyline.

To address the situation, Griffin scheduled a meeting with Governor Kathy Hochul on Thursday [5]. The discussion focused on the viability of the tower project and the current political climate in New York City.

While the tower remains a primary goal for the firm, reports indicate Griffin is doubling down on Miami amid the feud [6]. This shift suggests a potential pivot in corporate strategy away from the U.S. Northeast if the political environment remains hostile.

Citadel has not provided a specific timeline for a final decision on the Manhattan development, but the company linked the risk directly to the mayor's targeting of its founder.

"put me in harm's way"

This dispute illustrates the friction between populist fiscal policies and the pursuit of high-value foreign and domestic investment. By targeting a specific billionaire's residence for a political campaign, the mayor has transformed a policy debate into a personal security issue for the investor, potentially triggering 'capital flight' where wealthy firms move headquarters to more business-friendly cities like Miami.