Wealthy billionaires turn to Miami to donate 3 billion as they face luxury mansion tax.

Billionaire and founder of Citadel Investments, Ken Griffin, has made a donation of $3 billion to Carnegie Mellon University. Out of this generous contribution, $2 billion will be used to establish a new campus in Miami, while the remaining $1 billion will be allocated to the main campus in Pittsburgh. This donation marks the largest individual contribution in the history of higher education in the United States, with not a single dollar directed towards New York. The ramifications of this decision for New York may extend beyond just the financial aspect.

The new campus in Miami will cover 35 acres and is scheduled to commence construction in 2027. It is expected to accommodate over 3,500 students, nearly 300 faculty members, and more than 600 staff, with a focus on areas such as artificial intelligence, national security, energy, and advanced manufacturing. The $2 billion investment not only brings a new campus but also opportunities for talent cultivation, research, and industry collaboration.

Carnegie Mellon University already has a presence in Manhattan, offering a Master’s program in computational finance tailored towards the financial sector. However, this substantial donation did not flow into New York. On the flip side, Griffin’s financial firm Citadel Investments has relocated its global headquarters to Miami and is in the process of expanding the new headquarters locally.

Mayor Mamdani of New York City had previously filmed outside Griffin’s luxurious second home in Central Park South to advocate for imposing taxes on such high-end secondary residences. The city government estimates that this tax could generate an additional income of around $500 million annually.

Griffin announced in May of this year that Citadel Investments would be expanding its new headquarters in Miami, with the number of positions created in Miami over the next decade set to be “significantly more” than in New York. He described this as a direct reaction to Mamdani’s aforementioned actions.

For New York, the gains and losses in financial sector positions are particularly sensitive. This industry not only concentrates a significant number of high-paying jobs but also serves as a crucial source of tax revenue for the city. According to the city comptroller’s data, the securities industry brought in approximately $6.7 billion in tax revenue for New York City in the 2025 fiscal year, accounting for 8.4% of the city’s total tax revenue. The personal income tax contributed by this sector alone accounted for nearly a quarter of the city’s total.