The issue of optimum bank scope is central to many proposals for banking system reform. For example, a core component of the Dodd-Frank Act (2010) and regulatory proposals in the UK and the EU has been the concept of “ring-fencing” – i.e., restricting banks’ activities to their core...

One of the most dramatic trends in banking since the 1980s has been the secular movement away from core banking and interest generating activities towards enhanced reliance on non-interest-generating activities that focus largely on fees and trading profits. In this paper, we draw on a dataset...