Acquisition, brokerage, holding, management, rental and sale of real estate as well as renovation of buildings; Production of works of art and graphic works; Provision of services in the field of graphics; Organization of art exhibitions; Participations; Acquisition, holding, management and sale of securities, copyrights, patents and licenses of all kinds; Trade in goods of all kinds; Financing and provision of guarantees and sureties for subsidiaries and third parties.