Credit contagion refers to the propagation of economic distress from one firm to another. This article proposes a reduced-form model for these contagion phenomena, assuming they are due to the local interaction of firms in a business partner network. We study aggregate credit losses on large...

We derive a continuous time approximation of the evolutionary market selection model of Blume amp; Easley (1992). Conditions on the payoff structure of the assets are identified that guarantee convergence. We show that the continuous time approximation equals the solution of an integral equation...

We model aggregate credit losses on large portfolios of financial positions contracted with firms subject to both cyclical default correlation and direct default contagion processes. Cyclical correlation is due to the dependence of firms on common economic factors. Credit contagion phenomena are...

Risk management is an important component of the investment process. It requires quantitative measures of risk that provide a metric for the comparison of financial positions. In this expository note we give an overview of risk measures. In particular, we contrast different risk measures with...

We model aggregate credit losses on large portfolios of financial positions contracted with firms subject to both cyclical default correlation and direct default contagion processes. Cyclical correlation is due to the dependence of firms on common economic factors. Credit contagion phenomena are...

Erklärungsansätze für Koalitionsbildungen im Rahmen der Corporate Governance bieten die traditionellen agencytheoretischen Modelle und Quasi-Renten-Ansätze einerseits und die Organisations- und Stewardship-Theorie andererseits. Während sich die beiden erstgenannten Ansätze ausschließlich...

Demographic projections of future mortality rates involve a high level of uncertainty and require stochastic mortality models. The current paper investigates forward mortality models driven by a (possibly infinite-dimensional) Wiener process and a compensated Poisson random measure. A major...