acquisition, holding and disposal of interests and participations in any company, business, activity or association without distinction, mainly active in the real estate sector, both in Switzerland and abroad, it being specified that the company may hold in Switzerland a participation in a real estate company if (i) the shares of the latter are listed on a stock exchange in Switzerland or if (ii) the real estate company has the purpose of acquiring buildings for exclusively commercial use (cf. articles of association for full purpose).