The chief executives of Deutsche Bank and Credit Suisse are targeting what they see as big revenue earning opportunities for their investment banking operations once the crisis that has enveloped the capital markets since June starts to die down.

The bullish tone from Josef Ackerman, chief executive of Deutsche Bank, and Brady Dougan, his counterpart at Credit Suisse, comes on the back of renewed investor confidence in banking stocks over the last couple of days after months when share prices have been hit by the tumult.