Ackman Said Among Buyers of Penthouse at NYC’s One57

Hedge-fund manager Bill Ackman is among a group of investors who agreed to pay more than $90 million for a duplex penthouse at Manhattan’s One57 condominium tower, a person with knowledge of the deal said.

Upon its completion in 2014, the purchase would be one of two at the West 57th Street property that would top the highest price paid for a single Manhattan residence. Another penthouse at One57, under construction by Extell Development Co., is also under contract to be sold for more than $90 million.