Key Takeaways
- • Citadel Chief Operating Officer Gerald Beeson issued an internal memo (obtained by Reuters) formally objecting to Mayor Zohran Mamdani's use of Ken Griffin's $238 million penthouse as the focal point in a tax-the-rich video promoting New York's proposed pied-à-terre tax on luxury second homes worth over $5 million.
- • Citadel disputes the characterization that Griffin and his firm are not "carrying their fair share," citing $2.3 billion in combined city and state taxes paid by Citadel principals and team members over the past five years.
- • The hedge fund signaled potential reversal of a major real estate commitment: the planned $6 billion redevelopment of 350 Park Avenue in Midtown Manhattan, which would generate approximately 6,000 construction jobs and 15,000 permanent jobs, contingent on moving forward with the project.
- • The confrontation stems from Governor Kathy Hochul's newly proposed pied-à-terre tax, which Mamdani championed as part of his effort to close New York City's budget gap and fund campaign promises including free childcare, free public transit, and city-owned grocery stores.
- • The dispute highlights escalating tension between New York's newly elected Democratic socialist mayor and one of the nation's largest hedge fund operators over wealth taxation and corporate investment commitments in the city.
Summary
Ken Griffin's Citadel formally responded on April 23 to New York Mayor Zohran Mamdani's public campaign featuring Griffin's Manhattan penthouse, pushing back against the Democratic socialist's effort to build momentum for a new pied-à-terre tax on luxury second homes. In an internal memo obtained by Reuters, Citadel Chief Operating Officer Gerald Beeson stated it was "shameful" that Mamdani used Griffin's name to characterize wealthy property owners as not shouldering their "fair share" of New York City's expenses.
The confrontation began when Mamdani, in a video released April 15 titled "Happy Tax Day, New York. We're taxing the rich," stood directly in front of Griffin's residence at 220 Central Park South—a 24,000-square-foot property purchased in 2019 for $238 million, the highest residential sale price in U.S. history—and cited it as an example of the type of luxury second home the proposed tax would target. Mamdani celebrated the pied-à-terre tax, which Governor Kathy Hochul recently proposed, as an annual fee on properties exceeding $5 million owned by non-full-time residents.
Citadel's response emphasized the firm's substantial tax contributions to New York. Beeson stated that "Citadel's principals and team members have paid nearly $2.3 billion in city and state taxes over the past five years," directly countering the implication that Griffin avoids his tax obligations. The memo further signaled potential consequences for the city: Beeson referenced the planned $6 billion redevelopment of 350 Park Avenue in Midtown Manhattan, which would create 6,000 construction positions and support over 15,000 permanent jobs, conditioning its advancement on the broader investment climate.
The dispute reflects deeper tensions between Mamdani's campaign platform—which promises free childcare, free public buses, and municipally owned grocery stores funded through expanded taxation on wealthy residents—and the business community's concerns about punitive policies toward high-net-worth individuals and large institutional investors. Mamdani's mayoralty, assumed in early 2026, has positioned wealth redistribution and closing the city's budget gap as centerpieces of his administration, while high-profile business leaders like Griffin are signaling that aggressive tax policies could influence major capital deployment decisions.
The confrontation began when Mamdani, in a video released April 15 titled "Happy Tax Day, New York. We're taxing the rich," stood directly in front of Griffin's residence at 220 Central Park South—a 24,000-square-foot property purchased in 2019 for $238 million, the highest residential sale price in U.S. history—and cited it as an example of the type of luxury second home the proposed tax would target. Mamdani celebrated the pied-à-terre tax, which Governor Kathy Hochul recently proposed, as an annual fee on properties exceeding $5 million owned by non-full-time residents.
Citadel's response emphasized the firm's substantial tax contributions to New York. Beeson stated that "Citadel's principals and team members have paid nearly $2.3 billion in city and state taxes over the past five years," directly countering the implication that Griffin avoids his tax obligations. The memo further signaled potential consequences for the city: Beeson referenced the planned $6 billion redevelopment of 350 Park Avenue in Midtown Manhattan, which would create 6,000 construction positions and support over 15,000 permanent jobs, conditioning its advancement on the broader investment climate.
The dispute reflects deeper tensions between Mamdani's campaign platform—which promises free childcare, free public buses, and municipally owned grocery stores funded through expanded taxation on wealthy residents—and the business community's concerns about punitive policies toward high-net-worth individuals and large institutional investors. Mamdani's mayoralty, assumed in early 2026, has positioned wealth redistribution and closing the city's budget gap as centerpieces of his administration, while high-profile business leaders like Griffin are signaling that aggressive tax policies could influence major capital deployment decisions.
Go deeper than the headline
Research every firm in this story, track the ones that matter and get the daily briefing — free for 7 days.