The measurement of concentration risk in credit portfolios is necessary for the determination of regulatory capital under Pillar 2 of Basel II as well as for managing portfolios and allocating economic capital. Existing multi-factor models that deal with concentration risk are often inconsistent...

Coherent measures of a bank's whole risk capital imply a structure of a bank's optimal credit portfolio that is independent of its deposits and the expected deposit rate, of expected bankruptcy costs and of expected costs of regulatory capital.

Im Rahmen des IRB-Basisansatzes sieht Basel II eine Risikominderung durch Kreditsicherheiten nur bezüglich einzelner Kredite vor. Da in der Bankpraxis durch die Sicherungszweckerklärung Kreditsicherheiten oftmals für mehrere Krediten abgestellt sind, ergibt sich ein Zuordnungsproblem, das...

Gemäß den im Juni dieses Jahres endgültig verabschiedeten Rahmenrichtlinien der neuen Baseler Kapitalstandards sind Kredite im Wesentlichen mit den unerwarteten Verlusten zu unterlegen. Für erwartete Verluste sind hingegen Rückstellungen zu bilden, wobei Differenzen zwi-schen erwarteten...

Does demand for safety create instability ? Secured (repo) funding can be made so safe that it never runs, but shifts risk to unsecured creditors. We show that this triggers more frequent runs by unsecured creditors, even in the absence of fundamental risk. This effect is separate from the...

The establishment of a Capital Markets Union (CMU) is a high-priority project of the European Commission. CMU should foster additional non-bank sources of finance, mobilize private savings more efficiently and enhance capital market integration. Although more integration is needed, the...

We explore empirically how capital inflows into the US and financial deregulation within the United States interacted in driving the run-up (and subsequent decline) in US housing prices over the period 1990-2010. To obtain an ex ante measure of financial liberalization, we focus on the history...

We study retail deposit withdrawals from European commercial banks which incurred investment losses in the wake of the U.S. subprime crisis. We document a strong propensity of households to withdraw deposits from distressed banks, especially when a bank receives a public bailout. However, the...

In this paper, we examine how the institutional design affects the outcome of bank bailout decisions. In the German savings bank sector, distress events can be resolved by local politicians or a state-level association. We show that decisions by local politicians with close links to the bank are...

Mitigating the negative externalities that systemic risk can create for the financial system is the goal of macroprudential supervision. In Europe, macroprudential supervision is conducted both, at the national and at the European level. In principle, national regulators are responsible for...