Fonciere des Regions (FDR) is to launch an all-share bid to acquire a 34.6% stake in Italy's second-largest real-estate company, Beni Stabili, from Delfin, a company controlled by Beni Stabili's chairman Leonardo del Vecchio. Fonciere Des Regions, France's fourth- biggest real estate investment trust, will also launch a mandatory exchange offer for all of Beni Stabili's shares, subject to shareholders' approval on May 1, 2007, FDR announced during a press conference on Monday.