Jamie Dimon may bristle at being called the King of Wall Street. But recent evidence suggests the chief executive of JPMorgan Chase will sit on the throne for a while longer, mostly because there are no credible pretenders to the crown.

In normal circumstances, the results issued by Mr Dimon’s firm on Thursday – a halving in second-quarter profits, and a bleak outlook for the rest of the year – would have sent investors rushing for the exit.