“…Among such studies, a major focus has 6 been on the volatility transmission between stock index spot and futures prices in the developed economies. It has been concluded in the literature that information flows from index futures market to its underlying stock market, implying a leading role of the former in the price discovery process (Chan et al, 1991;Koutmos and Tucker, 1996;Iihara et al, 1996;Tse, 1999;Sim and Zurbreugg, 1999;Bhar, 2001, Kavussanos et al, 2008, and Bohl et al, 2011. The empirical evidence is consistent with the transaction costs theory which states that futures prices always lead spot ones in the information transmission process as the former attracts more informed traders in the market venue due to its lower transaction costs and less market microstructure biases (Silber, 1985;Flemming et al, 1996).…”