New York officials rolled out the details of the city's new pied-à-terre tax this week, so we took out our calculators and got busy. The tax will impact an estimated 10,000 properties in New York City, including those of Ken Griffin , who has found himself at the center of the discourse about the levy. When Mayor Zohran Mamdani announced the tax in April, he called out Griffin by name. The Citadel CEO, who lives full-time in Miami, owns three apartments in New York City: a penthouse on Central