With the introduction of the Euro, a single European money market has emerged. Further wholesale financial markets are considered to be highly integrated within the European Union. However, integration in retail financial markets is less advanced. For measuring financial market integration this...

Financial markets in Europe become more and more integrated. The persisting fragmentation of financial supervision, however, constitutes a lasting obstacle to integration. The aim of this paper is to assess these costs of supervisory fragmentation. We find clear evidence for the existence of...