Abertis Infraestructuras is the parent company of a group of companies engaged in the management of mobility and communications infrastructures operating in five sectors: motorway concessions, telecommunications, airports, car parks and logistics services. Its business purposes include the construction, maintenance and operation of motorways under concession in Spain and internationally; the construction of roads; ancillary construction activities, maintenance and operation of motorways, and communications and/or telecommunications for the mobility and transport of people, goods and information, under the necessary authorization, as the case may be.

ACS Actividades de Construccion y Servicios is a holding company. Through its subsidiaries, Co.'s activities are divided into the following areas: Construction, engaged in the construction of civil works, and residential and non-residential building construction; industrial services, engaged in the development of applied engineering services, installations and the maintenance of industrial infrastructures in the energy, communications and control systems sectors; services, groups together environmental services, the outsourcing of building maintenance services, logistics and transport services; and concessions, mainly engaged in transport infrastructure concessions.

Ferrovial is a transportation company based in Spain. Co. is engaged in operations in the transportation sector. Co. specializes in the design, construction, management, administration and maintenance of transport infrastructures. Co.'s services range also includes the maintenance of parking lots, and land-, sea- and air-based transport networks. Co. is also engaged in the promotion and operation of short-stay parking lots, parking regulation and management services and promotion and sale of residents' parking.

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.

Obrascon Huarte Lain is an international concession and construction groups based in Spain. Co. maintains significant operations in 30 countries across all five continents. Co. is engaged in hospital and railway construction, transport infrastructure concessions, oil and gas, energy, solids handling and fire protection systems and international contracts. Co.'s operations are organized along four divisions: OHL Concesiones, OHL Construccion, OHL Industrial y OHL Desarrollos. Co. is also engaged in real state project developments of mixed use managed by the international hotel chains.

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.