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

This paper analyzes the current use of incentive-fee-concepts for mutual funds inGermany. Following an empirical analysis about the relevance of these methods,the different methods of calculation and the influence of different parameters aredescribed. Further on it explains the impacts of...