Der Verlust an Biodiversität gilt als eines der zentralen Umweltprobleme. Um die Bedeutung der Biodiversität aufzuzeigen, wird heute in Wissenschaft und Praxis meist der Wert einzelner Arten oder Ökosysteme bestimmt. Die zugrundeliegende Überlegung ist, dass eine Art oder ein Ökosystem...

The work report first describes the current developments on the German market for nonperforming loans, which after its peak in spring 2007 is now also affected by the financial crisis. The sale of small and medium-size portfolios is described within the scope of a case study. Furthermore, the...

Copulas erfreuen sich in der Finanzwirtschaft wachsender Beliebtheit. Ursache hierfür ist insbesondere die Möglichkeit, mit ihrer Hilfe nicht-lineare Abhängigkeitsstrukturen darzustellen. Ein weiterer Vorteil besteht darin, dass multivariate Verteilungen mit Hilfe von Copulas separat in ihre...

Previous studies find a strong and positive empirical connection between health status and the share of risky assets held in household portfolios. But is this relationship truly causal, in the sense that households respond to changes in health by altering their portfolio allocation, or does it...

The empirical evidence on stock market participation and portfolio choice defies the predictions of standard life-cycle theory. In this paper we develop and estimate a model of portfolio choice that can account for the limited stock market participation and substantial portfolio diversification...

We examine the dynamics of idiosyncratic risk, market risk and return correlations in European equity markets using weekly observations from 3515 stocks listed in the 12 Euro area stock markets over the period 1974-2004. Similarly to Campbell, Lettau, Malkiel and Xu (2001), we find a rise in...

The paper studies the profit distribution and portfolio management of the Swiss National Bank in comparison with the behavior of other European central banks.It is shown that the SNB's behavior is unique in a number of respects : Relatively to the countries size, it holds the largest gold...

Despite operating under substantial regulatory constraints, we find that commercial banks manage their investments largely consistent with the predictions of portfolio choice models with capital market imperfections. Based on 1990-2002 data for small (assets less than $1 billion) U.S. commercial...

This paper applies growth optimization with downside protection as a portfolio selection technique. The model is based on power-log utility functions that combine portfolio growth maximization with the behavioural tenets of prospect theory. We use three assets (a farm return index, a stock...