piraeus bank a.e. (greek: τράπεζα πειραιώς αε), is a greek multinational financial services company with its headquarters in athens, greece.[5] as of december2017[update], it is the leading bank in greece, by assets with a 30% market share in net loans (44.7 billion euro) and second in liabilities, 29% in deposits (42.9 billion euro).[6] piraeus banks stocks are listed on the athens stock exchange (athex) since january 1918.[7] its market capitalization on october 2017 is 410 million euro making it the fourth largest by that measure. in march 2017, piraeus bank announced that has appointed mr. christos megalou as the new chief executive officer (ceo) of the bank.[8][9][10]