“…Therefore, the information reflecting the economic fundamentals of global stock markets diffuses from the US to other countries' markets, creating the volatility spillover. This paper is related to a growing number of papers on volatility spillover in stock markets (see, e.g., Barunik, Krehlik, & Vacha, 2016;Bonato, Caporin, & Ranaldo, 2013;Buncic & Gisler, 2016;Dean, Faff, & Loudon, 2010;Eun & Shim, 1989;Fengler & Gisler, 2015;Hamao, Masulis, & Ng, 1990;Lin, Engle, & Ito, 1994). Most of these studies, except for Bonato et al (2013) and Buncic and Gisler (2016), are limited to in-sample evidence concerning the presence or absence of volatility spillover but do not give out-of-sample results.…”