Citadel founder Ken Griffin has called on New York’s corporate leaders to become more vocal in defending the city’s long-term economic competitiveness, intensifying his public dispute with Mayor Zohran Mamdani over tax and business policy, according to a report by Fox Business.
Speaking at an event in Manhattan, Griffin argued that business leaders should actively engage in shaping the city’s future direction rather than remaining silent in the face of policies he believes could undermine investment and job creation. He warned that if employers and investors lose confidence in the city, New York risks a gradual erosion of talent and capital.
The comments come amid growing tension between Wall Street figures and Mamdani, whose proposals targeting higher taxes on wealthy residents and luxury property owners have drawn criticism from parts of the financial community. Critics argue the measures could weaken the city’s competitiveness at a time when other US financial hubs are actively competing for firms and high-net-worth individuals.
Griffin framed the debate as a long-term issue, suggesting that corporate institutions such as Citadel would remain active in New York well beyond any single mayoral term. He encouraged executives to prioritise the city’s economic health over short-term political considerations, emphasising the importance of maintaining a strong base of employers and taxpayers.
The dispute echoes earlier tensions between Griffin and local policymakers in other US cities, including Chicago, where concerns over taxes and public safety contributed to Citadel relocating its headquarters to Miami in 2022. That move has since been cited by market participants as an example of how policy decisions can influence the geographic distribution of financial firms.
Mamdani has also sought engagement with major business figures in recent months, even as he continues to advocate for increased taxation on high-value property and high-income earners. The outreach reflects an effort to balance progressive fiscal priorities with the need to retain major employers in the city.
While both sides have signalled openness to dialogue, Griffin indicated that he intends to judge policy direction based on outcomes rather than rhetoric, reinforcing his view that regulatory and tax frameworks will ultimately determine New York’s competitiveness in attracting and retaining financial firms.
The exchange underscores ongoing friction between segments of Wall Street and New York’s political leadership over the future direction of the city’s economic policy, particularly as competition between global financial centres intensifies.
