Behmiri, Niaz Bashiri; Manera, Matteo - 2015
persistence of volatility and the leverage effect across metal markets taking into account the presence of outliers, and second we … outliers, outliers bias the parameters estimation of the GARCH-type models, and removing outliers improves the performance of … outliers in capturing volatility. Moreover, we find the existence of inverse leverage effect for seven metals, the leverage …