Modeling and management of credit risk are the main topics within banks
and other lending institutions. Historical experience shows that, in
particular, concentration of risk in credit portfolios has been one of
the major causes of bank distress. Therefore, concentration risk is
highly relevant to anyone who wants to go beyond the very basic
portfolio credit risk models.
The book gives an introduction to credit risk modeling with the aim to
measure concentration risks in credit portfolios. Taking the basic
principles of credit risk in general as a starting point, several
industry models are studied. These allow banks to compute a probability
distribution of credit losses at the portfolio level. Besides these
industry models the Internal Ratings Based model, on which Basel II is
based, is treated.
On the basis of these models various methods for the quantification of
name and sector concentration risk and the treatment of default
contagion are discussed. The book reflects current research in these
areas from both an academic and a supervisory perspective