The requirement of positive marginal utility only makes it possible to derive a restricted twofundseparation theorem for portfolio selection problems replacing the original separation theorem ofCass and Stiglitz (1970). We use our findings for a re-examination of the bias-in-beta problem in...

We consider investors with mean-variance-skewness preferences who aim at selecting oneout of F different funds and combining it optimally with the riskless asset and direct stock holdings.Direct stock holdings are either exogenously or endogenously determined. In our theoretical section,we...

In this paper we develop an optimal dividend policy in the presence of limited rational inves-tors. Concretely, investors with mental accounts for dividends and stock prices as well as emotions like disappointment and elation embody the limited rationality. Furthermore, investors evaluate...

Since the equity premium as well as the risk-free rate puzzle question the concepts centralto financial and economic modeling, we apply behavioral decision theory to asset pricing in view ofsolving these puzzles. U.S. stock market data for the period 1960-2003 and German stock marketdata for the...

According to the new capital adequacy framework (Basel II) finally adopted by the BaselCommittee in June 2004 the eligibility of collaterals, especially financial collaterals, is extended incomparison to the existing rules. However, financial assets are valued conservatively in the creditcontext...

In the last decade, portfolio credit risk measurement has improved significantly. The currentstate-of-the-art models analyze the value of the portfolio at a certain risk horizon, e.g. one year. Mostpopular has become the Merton-type one-factor model of Vasicek, that builds the fundament of...

The ongoing debate concerning credit concentration risk is mainly driven by the requirementson credit risk management due to Pillar 2 of Basel II since risks (e.g. concentration risk) that arenot fully captured by Pillar 1 should be adequately considered in the banks’ risk management....

We are considering for examination an Irreversible Investment under Uncertainty, subsidizedby the government. If the government announces the termination of a form of subsidization,investors may decide to realize their investment in order to obtain the subsidy. These investors mighthave...

The most relevant practical impediment to an application of the Markowitz portfolio selectionapproach is the problem of estimating return moments, in particular return expectations. We analyzethe consequences of using return estimates implied by analysts’ dividend forecasts under the...

In the literature, implied rates of return are suggested as estimators for future expected oneperiodreturns because of their property not being prone to the discount rate effect. The discount rateeffect describes the problem that changes in expected future one-period returns lead to...