Ken Griffin said New York Mayor Zohran Mamdani’s push for higher taxes on second homes has reinforced Citadel’s commitment to Miami — and even led the firm to scale up its planned headquarters there, according to Bloomberg. Speaking Tuesday at the Milken Institute Global Conference, Griffin said Citadel decided to enlarge its Miami office project after Mamdani publicly referenced his $238 million Central Park South penthouse while promoting a new pied-à-terre tax proposal. “We went to Miami and revised our building plan to make it a bigger office building,” Griffin said. “What the mayor of New York has made clear to my partners, and principally my New York partners, is that we need to double down on our bet in Miami.” Bloomberg writes that Griffin said he watched Mamdani’s video three times and described it as “creepy and weird.” He added that the situation brought back memories of his departure from Chicago, where he previously criticized local leadership before moving Citadel and Citadel Securities to Florida. “Looking at what Mamdani did to me and more broadly …