Billionaire hedge fund manager Ken Griffin is seeking to sell a penthouse he owns at Zaha Hadid-designed One Thousand Museum.

The clock starts ticking Monday to win city approval for Midtown’s most ambitious development project — a 1.8 million ...

Billionaire developer Ken Griffin plans to rehabilitate the aging groins along ... Part of that property is where he is building a 44,000-square-foot estate with a mansion for his mother on 8 acres.

The Real Deal’s Daily Dirt discusses the public review of Vornado Realty Trust and Rudin Management’s 350 Park Avenue.

Ken Griffin's Citadel Securities is making moves in the cryptocurrency space as the Trump administration embraces the digital assets. Citadel Securities plans to offer cryptocurrency trading services.

Billionaire developer Ken Griffin plans to rehabilitate the aging ... Part of that property is where he is building a 44,000-square-foot estate with a mansion for his mother on 8 acres.

unattractive Midcentury building at 350 Park Ave.; privately-held Rudin, which owns adjacent and equally unattractive 40 E. 52nd St.; and mega-billionaire investor Ken Griffin. Citadel and Citadel ...