In this paper, we propose a new multivariate mean-reverting model incorporating state-of-the art 4/2 stochastic volatility and a convenient principal component stochastic volatility (PCSV) decomposition for the stochastic covariance. We find a quasi closed-form characteristic function and...

This paper develops an approximate closed-form optimal portfolio allocation formula for a spot asset whose variance follows a GARCH(1,1) process. We consider an investor with constant relative risk aversion (CRRA) utility who wants to maximize the expected utility from terminal wealth under a...

Organizational ambidexterity wurde kürzlich als "heisses Thema" innerhalb der Strategieforschung bezeichnet (Birkinshaw and Gupta, 2014: 2). Es definiert sich als die Fähigkeit einer Firma gleichzeitig exploration und exploitation durchzuführen (Gupta et al., 2006) und hat sich als "neues...

This study addresses the crucial but under-explored topic of ambiguity aversion, i.e., model misspecification, in the area of environmental, social, and corporate governance (ESG) within portfolio decisions. It considers a risk- and ambiguity-averse investor allocating resources to a risk-free...