In dieser Dissertation untersuchen wir die Terminstruktur der Kreditspreads auf Unternehmensanleihen bei korrelierten Unternehmensausfällen und asymmetrischer Information. Ausfallabhängigkeiten haben eine Reihe von Ursachen. Emittenten können durch direkte Beziehungen wie...

We consider the finite-time optimal portfolio liquidation problem for a von Neumann-Morgenstern investor with constant absolute risk aversion (CARA). As underlying market impact model, we use the continuous-time liquidity model of Almgren and Chriss (2000). We show that the expected utility of...

We consider a multi-player situation in an illiquid market in which one player tries to liquidate a large portfolio in a short time span, while some competitors know of the seller's intention and try to make a pro¯t by trading in this market over a longer time horizon. We show that the...

We consider the infinite-horizon optimal portfolio liquidation problem for a von Neumann-Morgenstern investor in the liquidity model of Almgren (2003). Using a stochastic control approach, we characterize the value function and the optimal strategy as classical solutions of nonlinear parabolic...