This dissertation investigates whether short sellers establish short positions prior to accounting restatement announcements and whether the levels of short interest are related to the severity of restatements. Using 565 firms with restatement disclosure during the period of 1995 to 2002 and...

This paper introduces a behavioural model and an algorithm that allow define classes of investors and draw the size each of them from financial data. The nonparametric pricing kernel estimated from stocks and options quotes allows to derive an estimate of the market utility. At the micro level...

Ziel der Diplomarbeit ist es, aufzuzeigen, welche Einflussfaktoren auf den Kapitalanleger aus ökonomischer, soziologischer und psychologischer einwirken. Unter diesen Gesichtspunkten wird der Wandel des Anlageverhaltens eines Individuums in seinem fortschreitenden Lebenszyklus betrachtet.Durch...

Die Dissertation befasst sich mit der praktischen Umsetzung der Behavioral-Finance-Theorie im Bereich des Asset Managements. Hierzu werden zunächst die wesentlichen verhaltensorientierten Anlagestrategien gemäß Fachliteratur identifiziert. Auf Basis von Regressionsansätzen wird anschließend...

In recent years high-frequency finance has become one of the most active research fields in finance and economics. The wide-spread availability of high-frequency datasets has particularly spurred research within this field and has, in turn, given birth to the rapidly expanding bridge between...

Portfolio selection has a long tradition in financial economics and plays an integral role in investment management. Portfolio selection provides the framework to determine optimal portfolio choice from a universe of available investments. However, the asset weightings from portfolio selection...

This paper investigates the farm level impacts of multiple peril yield and revenue insurance in an expected value-variance framework. The analysis is conducted using stochastic simulation jointly with numerical optimisation. Simulation is used to compute the means and variances of revenues as...

The objective of this paper was to compare and to analyze three portfolio selection models: Mean-Variance, Minimax and Minimax Weighted. These models were evaluated using historical data (September 1999 to August 2000, January 2001 to December 2001 and February 2002 to January 2003) obtained...

This dissertation consists of four stand-alone research papers which investigate various aspects of hedge fund performance and optimal portfolio choice. The first chapter of this thesis deals with the problem of unobserved hedge fund returns after delisting. It is a joint work with Prof. Jens...