SIGNA Group of Companies | 29,521 followers on LinkedIn. The Austrian company SIGNA, founded in 1999 by René Benko, is a privately held industrial group that is active in the retail and real estate sectors, among others. SIGNA Real Estate develops and manages a comprehensive portfolio of exceptional real estate projects in the DACH region (Germany, Austria and Switzerland) and in Italy and is among one of the leading property investors in Europe. SIGNA Retail manages several holdings in brick-and-mortar retail companies and online retailers (including The KaDeWe Group, Galeria Karstadt Kaufhof, internetstores, MyBestBrands, etc.).