This article examines the ability of time-varying Gaussian and Student t copulas to accurately predict the probability of joint extreme co-movements in stock index returns. Using a sample of more than 20 years of daily return observations of the Eurostoxx50 and Dow Jones Industrial stock...

This article presents the concept of a copula-based top-down approachin the field of financial risk aggregation. Selected copulasand their properties are presented. Copula parameter estimation andgoodness-of-fit tests are explained and algorithms for the simulationof copulas and...

Durch die neuen Baseler Eigenkapitalvorschriften (Basel II) werden die Banken inZukunft die Möglichkeit haben, das mit Eigenkapital zu unterlegende Kreditrisiko mitinternen Kreditrisikomodellen selber zu berechnen. Diese Arbeit untersucht diepraxisrelevantesten Modelle. Als erstes wird das...