Full Breakdown
Mayor Mamdani’s Pied-à-Terre Tax Video Sparks Conflict with Hedge-Fund Billionaire Ken Griffin
5/11/2026, 4:30:46 AM
The Video and Immediate Reactions
On April 15, Mayor Zohran Mamdani filmed a short clip outside Ken Griffin’s $238 million penthouse at 220 Central Park South. The mayor used the residence as a visual example of the proposed “pied-à-terre” tax on luxury second homes valued above $5 million. Griffin responded at the Milken Institute Global Conference, calling the video “creepy and weird” and “frightening,” and later told CNBC that the mayor had “put me in harm’s way.”
Policy Proposal and Fiscal Context
The tax, backed by Governor Kathy Hochul, would levy an annual fee on non-primary residences in New York City exceeding $5 million. City officials estimate the measure could raise less than $1 billion a year—some projections cite $500 million—to help close a $5.4 billion budget shortfall in the mayor’s $127 billion spending plan. The proposal is part of a broader effort to increase property taxes by 9.5% for the first time since 2001-02.
Key Players
- Zohran Mamdani – Democratic-socialist mayor of New York City, champion of the tax.
- Ken Griffin – Founder, CEO, and co-CIO of Citadel, whose firm has paid $2.3 billion in city and state taxes over five years and contributed roughly $650 million to charitable causes.
- Kathy Hochul – New York governor, publicly supporting the tax and the city’s business climate.
- Steve Fulop – President of the Partnership for New York City, representing the city’s corporate coalition.
- Eric Adams – Former mayor, who criticized the video as endangering jobs.
Economic Stakes
Citadel’s planned $6 billion redevelopment of 350 Park Avenue, a joint venture with Vornado Realty Trust, was projected to create 6,000 construction jobs and support more than 15,000 permanent positions. Griffin has warned that the mayor’s approach could prompt Citadel to shift investment to Miami, echoing the firm’s earlier relocation from Chicago. Business-group data cited by Fulop suggest that a modest 10 % decline in financial-sector activity could shave $168 million from tax revenues and cut $4.8 billion from GDP; a larger exodus could cost the city up to $12 billion in GDP.
Official Statements & Responses
- Mamdani emphasized that “all New Yorkers should succeed,” framing the tax as a correction to a system that “rewards extreme wealth while working people are pushed to the brink.”
- Hochul’s office reiterated pride in supporting both large and small businesses while backing the mayor’s revenue plan.
- City spokesperson echoed the mayor’s view that the tax targets a broken system, not individual success.
- Eric Adams warned that the video “traded thousands of real, good-paying jobs for social-media likes,” urging Mamdani to stop “dividing our city.”
Criticism & Opposition
Griffin argued the public targeting of his home “put me in harm’s way” and signaled a “double-down” on Miami operations. Fulop warned that “the numbers don’t lie,” warning of a potential “death spiral” if the city alienates its corporate base. Several business leaders, quoted in New York Post and other outlets, expressed concern that aggressive tax policy could accelerate the outflow of high-income taxpayers, a trend already reflected in a 2022-2023 decline of millionaire residents from 12.7 % to 8.7 % of the state’s population.
Conflicting Reports & Gaps
- Revenue estimates range from $500 million to “less than $1 billion” annually.
- The status of the 350 Park Avenue tower is described as “under discussion” by Citadel, yet other sources claim the project is “in doubt.”
- Griffin cited the 2024 murder of UnitedHealthcare CEO Brian Thompson as a safety concern, while other reports reference a separate political-violence incident.
- No official comment has been obtained from the mayor’s office on the exact timeline for the tax’s legislative enactment.
Verbatim Quotes
- “It was creepy. I watched the video three times, I had to. The first time I thought to myself, 'This is a joke.' And the second time I already thought it was scary. The CEO of United Healthcare was murdered a few blocks from my house.” — Ken Griffin, Citadel CEO (i24)
- “What really upset me about the video was the fact that he put me in harm’s way,” — Ken Griffin, CNBC interview (CBS)
- “When I ran for mayor, I said I would tax the rich. Well, today we are taxing the rich. An annual fee on luxury properties worth more than $5 million whose owners do not live here full-time. Like for this penthouse, which hedge fund CEO Ken Griffin bought for $238 million.” — Zohran Mamdani, video statement (i24)
- “The numbers don’t lie,” — Steve Fulop, President, Partnership for New York City (NY Post)
- “Mayor Mamdani’s video targeting Ken Griffin and using his home as a prop traded thousands of real, good-paying jobs in our city for social media likes," he said.” — Eric Adams, former mayor (CBS)
Outlook
The tax proposal remains under negotiation as the city’s budget deadline approaches. Stakeholders anticipate further statements from the mayor’s office, potential revisions to the tax rate, and monitoring of Citadel’s investment decisions, which could shape New York’s fiscal trajectory and its ability to retain high-value employers.
