Deutsche Bank's investment banking division limped over the line at the end of 2015, as steep declines at almost every business line along with higher litigation costs dragged the unit to its worst quarter for revenues since the end of 2008.

The German bank on January 28 published its full results for the three months to December 31 and 2015 as a whole, having earlier in the month flagged up an impending fourth-quarter loss at group level citing a decline at its corporate banking and securities division.