Shares of Deutsche Bank sank overnight, taking other regional bank shares lower too, after the company posted an unexpected loss, raising concern that more skeletons might be lurking in the European corporate earnings closet.
Shares of Deutsche Bank dropped 4.3 per cent after the German lender also flagged that this year will provide "further challenges".
"2013 was the second successive year in which we have invested in the bank's future growth and in further strengthening our controls while addressing legacy issues. These factors impacted our financial results," Deutsche Bank Co-Chief Executive Officer Jürgen Fitschen said in a statement.
"We expect 2014 to be a year of further challenges and disciplined implementation; however, we are confident of reaching our 2015 targets and delivering on our strategic vision for Deutsche Bank," according to Fitschen.
Other bank shares in Europe also declined, with Commerzbank sliding 4.5 per cent, Banco Popolare dropping 3.1 per cent and Credit Suisse falling 2.5 per cent.