NYC Mayor Mamdani Knocked Ken Griffin in Pied-a-Terre Tax Promo. His Firm Calls the Move 'Shameful'

New York City Mayor Zohran Mamdani is facing pushback from Citadel after personally calling out billionaire Ken Griffin while promoting the city's new pied-à-terre tax.

Mayor Mamdani used Griffin — the founder and CEO of Citadel, one of the world's most successful hedge funds — as a prominent example of the kind of wealthy out-of-town property owner the tax targets. The mayor's framing was blunt: New Yorkers deserve revenue from those who treat the city's real estate as a part-time investment.

Citadel's response was swift and pointed. Chief Operating Officer Gerald Beeson issued a memo calling the mayor's approach shameful, arguing that it showed ignorance and disdain toward the contributors who power New York's economy. The firm has been a significant presence in the city, employing thousands and generating substantial tax revenue through its operations.

The clash highlights a broader debate about how cities should tax wealth — particularly the kind of wealth that buys luxury real estate without full-time residency. Pied-à-terre taxes have been proposed in various forms for years, targeting non-resident owners of high-value properties. Proponents argue that these owners benefit from city services and infrastructure without paying their fair share of income taxes. Opponents counter that such taxes risk driving away the very people and businesses that fuel the local economy.

For Citadel, the public singling-out of its founder feels personal — and politically motivated. The firm has previously relocated operations in response to policy disagreements, and the memo's tone suggests patience with city leadership is wearing thin.

What This Means For You: The pied-à-terre tax debate is a microcosm of a much bigger question: how should cities tax the ultra-wealthy? If you own property in a major city — or rent from someone who does — tax policy changes like this affect housing costs, municipal budgets, and the business environment. The question isn't just whether billionaires should pay more, but whether taxing them in ways that encourage them to leave helps or hurts everyone else.