We show that if an agent is uncertain about the precise form of his utility function, his actual relative risk aversion may depend on wealth even if he knows his utility function lies in the class of constant relative risk aversion (CRRA) utility functions. We illustrate the consequences of this...

In this paper we provide further evidence on the suitability of the median of the point VaR forecasts of a set of models as a GFC-robust strategy by using an additional set of new extreme value forecasting models and by extending the sample period for comparison. These extreme value models...

This paper presents a detailed analysis of the composition of household portfolios, using both aggregate and micro-data. Among the key findings are that: Most household wealth is held in the form of housing and pensions. Over time, there has been a shift away from housing towards financial...

Auf Grundlage unabhängiger Ertragserwartungen einzelner Assets wird ein Ansatz zur Optimierung eines Anlagemix abgeleitet. Das erwartete Risiko wird dadurch gemindert unter anderem auch durch Einbeziehung von Anlagen mit schwachen Ertragserwartungen in Baissezeiten.

Für abhängige Ertragserwartungen verschiedener Assets wird eine optimale Investmentstrategie abgeleitet. Neben der Minimierung der Varianz wird das allgemeine Marktrisiko vermindert und erleichtert damit auch Erfolge in Baissephasen

In Ergänzung zu einem Aufsatz in der rv05-11 werden verschiedene Anlagestrategien anhand der erarbeiteten Kennziffern untersucht. Ausführliche Signifikanztests zeigen dabei, wieweit diese Strategien für Anlagen zur Altersvorsorge geeignet sind.

We consider individual's portfolio selection problems. Introducing the concept of ambiguity, we show the existence of portfolio inertia under the assumptions that decision maker's beliefs are captured by an inner measure, and that her preferences are represented by the Choquet integral with...

This paper analyzes investors' portfolio selection problems in a two-period dynamic model of Knightian uncertainty. We account for the existence of portfolio inertia in this two-period framework. Furthermore, by incorporating investors' up-dating behavior, we analyze how new observation in the...

This paper presents a model comparing the optimal degree of asset class diversification abroad by a central bank and a sovereign wealth fund. We show that if the central bank manages its foreign asset holdings in order to meet balance of payments needs, particularly in reducing the probability...