Deutsche Bank's fixed income traders helped push its investment bank to an 11% gain during the second quarter, even as the bank posted sharp declines in dealmaking fees.

The German lender posted €2.6bn in revenue within its investment bank in the three months to the end of June, which was ahead of analyst expectations and up by 11%. The €2.4bn in fixed income trading revenue was up by 32% for the period and ahead of market predictions.