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.

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.

Cellnex Telecom SA is a Spain-based company engaged in the wireless telecommunications (telecom) business. Its activities are divided into three segments: Broadcasting infrastructure, Telecom site rental, as well as Network services and other. The Broadcasting infrastructure division comprises distribution and transmission of television (TV) and frequency modulation (FM) radio signals, operation and maintenance (O&M) of radio broadcasting network, as well as over-the-top (OTT) radio services, among others. The Telecom site rental division provides access to wireless infrastructure, primarily through infrastructure hosting and telecom equipment co-location, mainly for mobile network operators and other wireless and broadband telecom network operators. The Network services and other division offers connectivity services for a variety of telecom operators and radio communication, among others. The Company also develops 5th generation mobile networks (5G) through Alticom BV.

Melia Hotels International is the parent company of a group engaged in the acquisition, management and operation of hotels. Co. operates its hotel network in Germany, Argentina, Brazil, Bulgaria, Cabo Verde, Chile, China, Costa Rica, Croatia, Cuba, Egypt, Spain, United States, France, Greece, Netherlands, Indonesia, Italy, Luxembourg, Malaysia, Mexico, Panama, Peru, Portugal, Puerto Rico, United Kingdom, Dominican Republic, Singapore, Switzerland, Tunisia, Uruguay, Venezuela and Vietnam under the followings brandnames: Paradisus Resorts®, Melia Hotels & Resorts®, TRYP Hoteles® and Sol Hotels & Resorts®.

Neinor Homes SA, formerly Neinor Homes SLU, is a Spain-based company engaged in the real estate sector. The Company focuses on the design, construction and promotion of residential properties. It develops housing projects in various Spanish cities, such as Malaga, Madrid, Barcelona, Cordoba, Vizcaya, Alicante, Almeria and Gerona.

Sacyr is the parent company of a group engaged in the acquisition, development and construction of urban properties for their subsequent rental or resale. Co. primarily leases and sells office buildings and complexes, housing units, and shopping centers. Co. is also engaged in the operation of urban car parking facilities. Co. offers services related to the real estate industry such as technical assistance in energy savings, inventory management, architectural design, telecommunications management, property maintenance, as well as gardening and landscaping. Co. also provides consulting services in the real estate fund management sector.

Talgo is engaged in designing, manufacturing, repairing and maintaining the railway rolling stock, as well as the manufacturing, assembling, repairing and maintaining the engines, machinery and parts of the railway systems. Co. has an industrial presence in seven countries: Spain, Germany, Kazakhstan, Uzbekistan, Russia, Saudi Arabia and U.S.A. Co. has an active fleet in Europe, Asia and North America that comprises of 94 high-speed trains and more than 1,400 Talgo tilting passenger cars. Also, Co. purchases, redesigns, constructs, leases and sells all types of real estate.

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.