Europäische Banken sind gesetzlich verpflichtet, bei ihren Geschäften strenge Regeln zur Risikoabwägung zu befolgen. Doch tatsächlich haben genau diese Regeln erst dazu geführt, dass die Finanzmärkte heiß liefen. Frank Riedel, Professor für Finanzmathematik, erklärt, wie es passieren...

This paper studies a dynamic version of the Holmstrom-Tirole model of intermediated finance. I show that competitive equilibria are not constrained efficient when the economy experiences a financial crisis. A pecuniary externality entails that banks' desire to accumulate capital over time...

In this paper we study systemic risk for the US and Europe. We show that banks' exposures to common risk factors are crucial for systemic risk. We come to this conclusion by first showing that relations between US and European banks are smaller than within each region. We then show that European...