Purchase and sale, development of properties on its own account or on behalf of third parties, as well as brokerage and management of real estate in Switzerland and abroad, rental, leasing, development, sale and management of real estate and land of all kinds, construction of buildings for third parties and on its own account, as well as participation in real estate transactions; may establish branches, participate in other companies, acquire or establish similar or related companies, and acquire, manage and sell securities, copyrights, patents and licenses.