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

Die Eigenkapitalunterlegungspflicht von Kreditgeschäften von Banken erfolgt mitder Einführung der im Juni 2004 verabschiedeten neuen Eigenkapitalrichtlinien (Basel II) maßgeblichauf Grundlage des durch den Kreditnehmer induzierten Verlustrisikos. Dies ermöglicht, die...

In the last decade, portfolio credit risk measurement has improved significantly. The currentstate-of-the-art models analyze the value of the portfolio at a certain risk horizon, e.g. one year. Mostpopular has become the Merton-type one-factor model of Vasicek, that builds the fundament of...

The ongoing debate concerning credit concentration risk is mainly driven by the requirementson credit risk management due to Pillar 2 of Basel II since risks (e.g. concentration risk) that arenot fully captured by Pillar 1 should be adequately considered in the banks’ risk management....

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

Although the world of banking and finance is becoming more integrated every day, in most aspects the world of financial regulation continues to be narrowly defined by national boundaries. The main players here are still national governments and governmental agencies. And until recently, they...

This paper first provides a simple but very general framework for credit portfolio modellingwhich is based on the distinction between systematic and unsystematic risk. Unsystematicor borrower-specific risk vanishes through diversification in a very large, infinitelyfine-grained portfolio. The...

Evidence from many countries in recent years suggests that collateral values and recovery rates on corporate defaults can be volatile and, moreover, that they tend to go down just when the number of defaults goes up in economic downturns.(...)

This paper analyzes the association between aggregate default and recovery rates on credit assets, and seeks to empirically explain this critical relationship. We examine recovery rates on corporate bond defaults, over the period 1982-2002.(...)

This paper analyzes the impact of various assumptions about the association between aggregate default probabilities and the loss given default on bank loans and corporate bonds, and seeks to empirically explain this critical relationship.(...)