Banco Santander, S.A., doing business as Santander Group (), is a Spanish multinational commercial bank and financial services company founded and based in Santander, Spain. In addition to hubs in Madrid and Barcelona, Santander maintains a presence in all global financial centres as the largest Spanish banking institution in the world. Although known for its European banking operations, it has extended operations across North and South America, and more recently in continental Asia.
Many subsidiaries, such as Abbey National, have been rebranded under the Santander name. The company is a component of the Euro Stoxx 50 stock market index. In May 2016, Santander was ranked as 37th in the Forbes Global 2000 list of the world's biggest public companies. Santander is Spain’s largest bank. In September 2018 it was announced that incumbent chief executive José Antonio Alvarez would be succeeded by Andrea Orcel in early 2019.As of 2017, Santander is the 5th largest bank in Europe with approximately US$1.4 trillion in total assets-under-management (AUM). Traded on the Euro Stoxx 50 stock market index, the bank has a total market capitalization of $69.9 billion.