The article analyzes optimal portfolio choice of utility maximizing agents in a general continuous-time financial market model under a joint budget and downside risk constraint. The risk constraint is given in terms of a class of convex risk measures. We do not impose any specific assumptions on...

We investigate the problem of maximizing the robust utility functional <InlineEquation ID="Equ1"> <EquationSource Format="TEX">$\inf_{Q \in \mathcal{Q}} E_Qu(X)$</EquationSource> </InlineEquation>. We give the dual characterization for its solution for both a complete and an incomplete market model. To this end, we introduce the new notion of reverse f-projections and use techniques...</equationsource></inlineequation>

Die öffentliche Kritik, die 2010 der Senkung des Umsatzsteuer-Tarifs für Hotelübernachtungen von 19% auf 7% folgte, war insoweit überraschend, als der traditionellen Inzidenz-Hypothese zufolge Tarifsenkungen der Umsatzsteuer durch Preissenkungen Konsumenten zugutekommen. Sie wäre berechtigt...

Systemic risk refers to the risk that the financial system is susceptible to failures due to the characteristics of the system itself. The tremendous cost of this type of risk requires the design and implementation of tools for the efficient macroprudential regulation of financial institutions....

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...

[Schlussbetrachtung] Die bisher in den Steuerwissenschaften publizierte Spenden-Literatur verzichtete sowohl auf eine Modellierung der Steuerwirkungen als auch auf die Berücksichtigung umsatzsteuerlicher Konsequenzen. Der vorliegende Beitrag schließt diese Lücke, indem er einer detaillierten...

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 (macro-) economic factors; credit contagion...

Credit contagion refers to the propagation of economic distress from one firm or sovereign government to another. In this paper we model credit contagion phenomena and study the fluctuation of aggregate credit losses on large portfolios of financial positions. The joint dynamics of firms' credit...