Caporale, Guglielmo Maria; Gil-Alana, Luis A. - DIW Berlin (Deutsches Institut für Wirtschaftsforschung) - 2011
This paper examines several US monthly financial time series data using fractional integration and cointegration techniques. The univariate analysis based on fractional integration aims to determine whether the series are I(1) (in which case markets might be efficient) or alternatively I(d) with...