Banco Bilbao Vizcaya Argentaria, S.A. (Spanish pronunciation: [ˈbaŋko βilˈβao βiθˈkaʝa aɾxenˈtaɾja]), better known by its initialism BBVA, is a Spanish multinational financial services company based in Madrid and Bilbao, Spain. The history of BBVA began in 1857 in Bilbao, a city located in the Basque part of northern Spain, when the Board of Trade promoted the creation of Banco de Bilbao as an issuing and discount bank. Banco de Vizcaya was founded in 1901 and carried out its first operations in Bilbao. Little by little, it spread throughout the country. In 1988, the merger agreement between Banco de Bilbao and Banco de Vizcaya was signed. And in 1989, the BBV brand was adopted.

ABANCA Corporación Bancaria, S.A. is a Spanish bank based in Galicia. It was created in 2011 following the "bankisation" of Novacaixagalicia savings bank. Formerly NCG Banco, S.A., which traded as Novagalicia Banco, was created in September 2011 following the bankisation process of Novacaixagalicia. As Novagalicia Banco's predecessor, the savings bank Novacaixagalicia, was subsequently bailed out by the Government of Spain the majority of the shares in the company were held by the bailout program Fund for Orderly Bank Restructuring (90.57%). The Novacaixagalicia Foundation holds 6.84% with the remaining 2.59% being held by private investors.

Banco Bilbao Vizcaya Argentaria, S.A. (Spanish pronunciation: [ˈbaŋko βilˈβao βiθˈkaʝa aɾxenˈtaɾja]), better known by its initialism BBVA, is a Spanish multinational financial services company based in Madrid and Bilbao, Spain.The history of BBVA began in 1857 in Bilbao, a city located in the Basque part of northern Spain, when the Board of Trade promoted the creation of Banco de Bilbao as an issuing and discount bank.

Banca March, S.A., (/mɑːk/) is a Spanish investment bank and financial services company headquartered in Palma and Madrid. Banca March was founded in Palma de Mallorca in 1926 by Juan March Ordinas. At first, the bank's area of influence was limited to Mallorca, progressively expanding throughout the 20th century and becoming an independent bank in all of the Balearic Islands. The main objective was to finance a part of the business activities of its founder.

Ibercaja Banco, S.A., stylised as iberCaja, is a Spanish financial services company based in Zaragoza. It was created by the Caja de Ahorros and Monte de Piedad of Zaragoza, Aragón and Rioja (Ibercaja) in 2011, to develop its financial activity, being initially the shareholder of 100% of the bank.

Kutxabank is a Spanish bank founded and based in Bilbao. It was officially created on 1 January 2012 out of the merger of three Basque financial institutions operating in their respective provinces: Bilbao Bizkaia Kutxa (BBK), based in Bilbao; Gipuzkoa Donostia Kutxa (Kutxa), based in San Sebastián; and Caja Vital Kutxa (Vital) based in Vitoria.The European stress test measuring solvency in periods of credit crisis showed that Kutxabank ranked first in Spain, standing out as the soundest financial institution (data published in October 2014).

ABANCA Corporación Bancaria, S.A. is a Spanish bank based in Galicia. It was created in 2011 following the "bankisation" of Novacaixagalicia savings bank.Formerly NCG Banco, S.A., which traded as Novagalicia Banco, was created in September 2011 following the bankisation process of Novacaixagalicia.

Bankinter, S.A. (Spanish pronunciation: [baŋˈkinteɾ]), is a Spanish financial services company headquartered in Madrid. It has been listed on the Bolsa de Madrid since 1972, and is part of the Ibex35 Index.Bankinter was founded under the name Banco Intercontinental Español in June 1965 as an industrial bank through a joint venture by Banco de Santander and BankAmerica. In 1972 the bank became fully independent of its founders and transformed itself into a commercial bank.

Unicaja is a Spanish savings bank based in Málaga and chartered as a caja de ahorros providing retail banking services. The banks full name is Monte de Piedad y Caja de Ahorros de Ronda, Cádiz, Almería, Málaga y Antequera after the names of all the merged entities and the mount of piety structure.Unicaja was founded 18 March 1991 with the merger of five similar institutions, each of which contributed its location to the corporate name of the merged entity: Monte de Piedad y Caja de Ahorros de Ronda (founded 1909) Caja de Ahorros y Monte de Piedad de Cádiz (founded 1884)