This paper studies the integrated Garch (IGARCH) e®ect, a phenomenon often encountered when estimating conditional auto-regressive models on ¯nancial time series. The analysis of twelve indexes of major ¯nancial markets provides empirical evidence of its well-spread presence especially in...

We examine the impact of including sustainability related constraints on optimal portfolio selection. Our analysis covers an investment set containing the components of the S&P500 index from 1993 to 2008. The optimizations are performed according to the classical mean-variance approach while...