"Billionaire Ken Griffin is bolstering the office space at his Brickell supertall that will serve as Citadel and Citadel Securities’ headquarters...Although the news comes amid a public kerfuffle between the billionaire and New York Mayor Zohran Mamdani, the Brickell supertall office expansion was planned prior to the spat." (Article link below.)
https://therealdeal.com/miami/2026/04/28/ken-griffin-expands-office-space-at-planned-brickell-tower/