Acciona is the parent company of a construction group. Co. is engaged in general construction activities in the areas of civil engineering and buildings, including railways, marine and hydraulic works, motorways and airports, town planning, conduits, pavements, parking lots, and industrial and urban buildings. In addition, Co. is engaged in the provision of real estate services, the operation of parking lots, telecommunications, services, ecology and alternative means of energy. Co.'s operations are organized in six business divisions: Infrastructures, Real Estate, Energy, Water, Environmental & Urban Services and Logistic & Transport Services.

Banco Santander is a holding company, providing a range of financial products. Co.'s products and services include: retail banking business that covers all customer banking businesses; wholesale banking business; as well as asset management and insurance business. Co.'s principal operations are in Spain, the U.K., Portugal, Germany, Italy and Latin America. As of Dec 31 2014, Co.'s total assets amounted to Euro1,266,296,000,000 and total customer deposits amounted to Euro647,627,000,000.

Indra Sistemas is engaged in the design, development, manufacture, assembly, repair, and installation of computer software and applications. Through its subsidiaries, Co. is engaged in consulting, graphic design and multimedia, web design and marketing, internet development and electronic trade, systems integration and hosting geared business to business and business to consumer, as well as in internet financing and electronic marketing. Co. serves defense and security, transport and traffic, energy and industry, telecom and media, finance and insurance, and public administration and healthcare markets. Co. operates primarily in Europe, the United States, Canada, and Latin America.

Metrovacesa SA, formerly Metrovacesa Suelo y Promocion SA, is a Spain-based real estate developer. The Company specializes in construction and sale of sustainable housing, both single-family and multi-family residential properties. Its activities also include promotion, urbanization and parceling of real estate in general, as well as real estate management for own benefit or on behalf of third parties. Its asset portfolio includes more than 6 million square meters of building land across Spain, as well as already developed properties in cities, such as Malaga, Almeria, Cordoba, Barcelona and Madrid, among others.

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.