The lender said its client businesses continued to grow revenues and that its second-quarter results were in line with its guidance for the year.

Deutsche Bank returned to a better-than-expected profit in the second quarter from a loss a year ago as trading earnings helped offset mixed results at its global investment banking division and a hit from the jump in the euro's value.

Across the board, Deutsche Bank noted an impact from the relative strength of the euro against the U.S. dollar.