Aena SME SA, formerly Aena SA, is a Spain-based company primarily engaged in the airports operation. Its activities are divided into four segments: Airports, which comprises Aeronautical subdivision, responsible for the management of airports, jetways, security, handling, cargo and fuel services, among others, as well as Commercial subdivision, including duty-free and specialty stores, restaurant services, car rental, as well as banking services and advertising; Services outside the terminal, which manages real estate assets, such as parking lots, warehouses and lands; International, which comprises operations of Company's subsidiary, Aena Desarrollo Internacional SA, that invests in other airport owners principally in Mexico, Colombia and the United Kingdom; and Others, encompassing corporate activities. It manages tourism, hub and regional airports, as well as heliports and general aviation areas. Furthermore, its destination range comprises Europe, the Americas, Asia and Africa.

Fomento de Construcciones y Contratas is the parent company of a group engaged in sanitation services, cleaning, maintaining, purification and distribution of water, construction of highways, hydraulic works, marine works, air and rail transport infrastructure, urban developments, housing, non-residential buildings, office buildings, toll highways, parking garages, marinas and water treatment plants. Co. is also engaged in the manufacture and sale of cement and cement infrastructures, such as precast concrete elements; and in the financial markets, and real estate development, leasing and tourism.

Telefonica is engaged in the provision of public or private telecommunications services, including ancillary or complementary telecommunications services or related services. Co.'s fixed business includes: traditional fixed telecommunication services, Internet and broadband multimedia services, data and business-aplications services, and wholesale services for telecommunication operators. Co. also provides a range of mobile and related services and products to consumer and business customers, including mobile voice services, value added services, mobile data and Internet services, wholesale services, corporate services, roaming, fixed wireless, and, trunking and paging.

Viscofan is the parent company of the Viscofan Group. Co. is divided into two major operational subgroups. The companies comprising the Naturin GmbH subgroup are engaged in the manufacture and distribution of artificial casings (small and big diameter collagen and plastics) for the meat industry. Through its wholly-owned subsidiary IAN, S.A., Co. also manufactures and distributes canned vegetables (asparagus, olives and tomato).