Ken Griffin’s Citadel plans 51-story office tower on Park Avenue

New details are emerging on hedge fund billionaire Ken Griffin’s planned office skyscraper in Midtown.

Griffin’s Citadel is eyeing a 51-story, Norman Foster-designed tower at 350 Park Avenue, where it will redevelop properties leased from Steve Roth’s Vornado Realty Trust and Rudin Management, people familiar with the matter told Bloomberg. Citadel would occupy about 54 percent of the 1.7 million-square-foot building, which would rise to 1,350 feet...

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