Banco Espirito Santo (BES) was a Portuguese bank based in Lisbon that on 4 August 2014 was split in two bank. It once was the second-largest listed Portuguese bank and the ninth-largest contributor to the PSI-20 index. BES was the second-largest private financial institution in Portugal in terms of net assets (€80,700 million in March 2011), with an average market share of 20.3% in Portugal and 2.1 million clients.