“…Volatility spillover patterns appear to be widespread in financial markets. There is evidence for spillovers between equity markets (see for example Hamao, Masulis andNg 1990, andIto 1994), bond markets (Christiansen 2003), futures contracts (Abhyankar 1995, Pan andHsueh 1998), exchange rates Lin 1990, andBaillie andBollerslev 1990), equities and exchange rates (Apergis and Rezitis 2001), various industries (Kaltenhauser 2002), size-sorted portfolios (Conrad, Gultekin and Kaul 1991), commodities (Apergis and Rezitis 2003), and swaps (Eom, Subrahmanyam and Uno 2002). Despite the interest that investors might have in these pervasive spillover effects, we are not aware of any study that investigates the question of their impact on efficient asset allocation.…”