The ongoing global financial crisis is rooted in a combination of factors common to previous financial crises and some new factors. The crisis has brought to light a number of deficiencies in financial regulation and architecture, particularly in the treatment of systemically important financial...

As in other sectors, competition in finance matters for allocative, productive and dynamic efficiency. Theory suggests, however, that unfettered competition is not first best given the special features of finance. I review these analytics and describe how to assess the degree of competition in...