Rudin Management sold a partnership stake in its 35-story Financial District office tower at One Battery Park Plaza to Allianz Real Estate of America. The U.S. branch of Munich-based investment firm Allianz bought a 49 percent stake in the 870,000-square-foot tower located at 24 State Street, Rudin CEO Bill Rudin told The Real Deal. Rudin’s firm, one of the city’s largest landlords, will continue to manage the property.