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.

Caixabank is an investment company based in Spain. Co. is involved in investment portfolio management activities across two areas: Services and Financial Business and Insurance. In the services area, Co. provides investment solutions for companies involved in the infrastructure, energy, services and entertainment sectors. In the financial business and insurance area, Co. is engaged in the investments for international banks, insurance and specialist financial services. Co. focuses most of its banking investments in India, China, the U.S., and Central and Eastern Europe with a particular interest in retail banking. Co. is also involved in the disinvestments activities.

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.

Ence Energia Y Celulosa is engaged in the manufacture and commercialization of wood pulp and derivatives. Co. divides its activities into the following two business lines: Forest Division: Co. manages timberlands in South America and the Iberian Peninsula. Co. is involved in trading of wood, and supplies solid wood products including: plywood, sawn timber, parquet flooring and glued-edge paneling. Co. is involved in forest and environmental consulting. Pulp Division and Energy Production: Co. is engaged in the production of Eucalyptus globulus-based TCF and ECF paper pulp. Co. is also involved in the generation of electricity through biomass power producing plants.

Siemens is a technology company. Co.'s Energy sector provides a range of products, solutions and services for generating and transmitting power. The Healthcare sector provides customers a range of medical solutions across the treatment chain. The Industry sector supplies products and solutions for industrial companies, primarily in the process and manufacturing industries. The Infrastructure & Cities sector provides a range of technologies that accelerates the capabilities of metropolitan centers and urban infrastructures. The Investments segment is comprised of Co.'s equity stakes in other companies. The Financial Services segment provides business-to-business financial solutions.