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...

The system of banking supervision in Europe is undergoing substantial reforms. According to Stigler's capture theory regulation often follows the preferences of producers. Therefore, the interests of the financial industry might be a major driving force for the ongoing supervisory reform debate....