We derive approximate formulae for the credit value-at-risk and the economic capital of a large credit portfolio. The representation allows to change the risk horizon quickly and avoids simulation or numerical procedures. The Poisson mixture model is equivalent to CreditRisk and uses the same...

Banks increasingly use short-term wholesale funds to supplement traditional retail deposits. Existing literature mainly points to the "bright side" of wholesale funding: sophisticated financiers can monitor banks, disciplining bad but refinancing good ones. This paper models a "dark side" of...

In jüngster Vergangenheit hat die Versicherungswirtschaft einen grundlegenden Wandel durchlaufen. Deregulierung, Globalisierung sowie Substitutionskonkurrenz führten zu einem verschärften Wettbewerb um Marktanteile bei sinkenden Gewinnmargen. Aufgrund dieser neuen Wettbewerbsdynamik und den...

In this paper we show that deposit insurance can increase the probability of systemic banking crisis, even though it is optimally designed and its premium is risk related. This is driven by the possibility of contagious bank runs. We prove that contagion only occurs if the correlation between...

The industrial organization approach to banking is applied to analyze theeffects of the introduction of joint credit and interbank rate risk on the optimaldecisions on deposits and loans of a competitive bank. It is found that dueto the introduction of both sources of risk there appear direct...

We examine the prudential implications of the co-existence between the standardized approach and the internal ratings-based (IRB) approach, as defined in the new Basle Accord. We consider a model in which sophisticated banks, eligible for the IRB approach, and unsophisticated banks, eligible for...

This paper analyzes the emergence of systemic risk in a network model of interconnected bank balance sheets. Given a shock to asset values of one or several banks, systemic risk in the form of multiple bank defaults depends on the strength of balance sheets and asset market liquidity. The price...

In this paper we have developed a financial model of the non-life insurer to provide assistance for the management of the insurance company in making decisions on product, investment and reinsurance mix. The model is based on portfolio theory and recognizes the stochastic nature of and the...

Recent changes in accounting regulation for financial instruments (SFAS 133, IAS 39) have been heavily criticized by representatives from the banking industry. They argue for retaining a historical cost based mixed model where accounting for financial instruments depends on their designation to...