Ken Griffin's $238 million New York City penthouse isn't the only pied-à-terre he owns. See what else is in his portfolio.

Source: Business Insider

Citadel CEO Ken Griffin has a real estate portfolio totaling over $1 billion. Nordin Catic/Getty Images for The Cambridge UnionBillionaire Ken Griffin has criticized Mayor Mamdani's second-home tax in New York. Griffin owns the most expensive condo in the US, but he doesn't live there full-time.