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Citadel memo calls targeting of Ken Griffin shameful

Reported by Opalesque
Apr 23, 2026· 2 min read
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Key Takeaways
  • • Citadel's COO Gerald Beeson issued a companywide memo characterizing New York City Mayor Zohran Mamdani's public criticism of founder Ken Griffin as "shameful," signaling internal pushback against political targeting of the hedge fund leader.
  • • Mamdani's criticism centered on Griffin's tax obligations under a proposed pied-à-terre tax on non-primary residences valued above $5 million; Griffin owns a $238 million Manhattan penthouse purchased in 2019.
  • • Citadel's $6 billion redevelopment project at 350 Park Avenue in Midtown Manhattan—projected to generate 6,000 construction jobs and 15,000+ permanent positions—faces potential reconsideration following the political dispute, according to Beeson's memo.
  • • The incident reflects broader tension between prominent hedge fund leaders and municipal officials over tax policy and wealth concentration, with implications for major capital investment commitments in major cities.
  • • Citadel employs approximately 2,500 workers in New York despite Griffin relocating his primary business operations to Miami, underscoring the company's material economic footprint in the state.
Summary
Citadel pushed back against political criticism directed at founder Ken Griffin following remarks by New York City Mayor Zohran Mamdani calling out the billionaire as someone who should pay additional taxes. In a companywide memo dated Thursday, Gerald Beeson, Citadel's chief operating officer, characterized the Mayor's targeting as "shameful," describing it as evidence of "ignorance and disdain of the elite political class."

The confrontation centers on Mamdani's advocacy for a pied-à-terre tax levied on non-primary residences valued at $5 million or more. Griffin, whose $67 billion hedge fund is now based in Miami, owns a $238 million Manhattan penthouse acquired in 2019 and maintains a significant employment footprint in New York with approximately 2,500 workers.

Beeson's memo carries material business implications. The firm had been planning a major $6 billion redevelopment of 350 Park Avenue in Midtown Manhattan, a project expected to create 6,000 construction jobs and support the development of more than 15,000 permanent jobs. Beeson indicated that Citadel may reconsider proceeding with this capital-intensive initiative in response to what the memo characterizes as hostile political treatment of Griffin.

The memo states: "The Mayor has once again manifested the ignorance and disdain of the elite political class towards those who have been consistently committed to building one of the greatest cities in the world." This language suggests escalating friction between major hedge fund operators and municipal leadership over tax policy and wealth distribution, with potential consequences for large-scale urban development projects. Griffin, a prominent Republican donor and behind-the-scenes political player, has engaged in previous disputes with New York City officials.

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Sources

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Opalesque Citadel memo calls targeting of Ken Griffin shameful