Investment banking: The upside of downsizing

Regulators want banks to shrink their investment banking activity and, by introducing rules that make much of it uneconomic, have got shareholders onside. Banks now need to get the business mix of their corporate and investment banking arms right, and get the size of these divisions right. Maybe then they can work out where to invest and even grow. Outside the top tier of investment banks, there’s plenty of reinvention going on.