We analyze whether banking supervision responsibilities should be concentrated in the hands of a single supervisor. We find that splitting supervisory powers among different supervisors is a superior arrangement in terms of social welfare to concentrating them in a single supervisor when the...

We analyze the impact of bank competition on the equilibrium quality of loans in a formal model where banks do not observe the type of loan applicants, i.e. face an adverse selection problem, nor borrowers’ effort, i.e. also face a moral hazard problem. The main finding is that there exists an...

This paper presents a formal model of a credit rating agency. I study the consequences of the transition from an “investor-pays” model to an “issuer-pays” model on the quality standard of credit ratings chosen by the agency. I find that such a transition is likely to generate a...