Inaugural -Dissertation zur Erlangung des Grades eines Doktors der Wirtschafts -und Sozialwissenschaften der Wirtschafts -und Sozialwissenschaftlichen Fakultät der Christian -Albrechts -Universität zu Kiel The objective of this study is the development and application of models for financial...

Both unconditional mixed-normal distributions and GARCH models with fat-tailed conditional distributions have been employed for modeling financial return data. We consider a mixed-normal distribution coupled with a GARCH-type structure which allows for conditional variance in each of the...

A new model class for univariate asset returns is proposed which involves the use of mixtures of stable Paretian distributions, and readily lends itself to use in a multivariate context for portfolio selection. The model nests numerous ones currently in use, and is shown to outperform all its...