“…The bulk of research on feedback trading in derivatives' markets pertains to index futures contracts [82], with a large number of studies (Wang, 2002(Wang, , 2003Ghysels and Seon, 2005;Cheng et al, 2007;Kurov, 2008;Salm and Schuppli, 2010;Antoniou et al, 2011;Wang, 2014, 2015;Smales, 2016;Chen and Yang, 2021) confirming empirically the significance of (predominantly, positive) feedback trading in that segment [83]. At the macro level, positive feedback traders often appear more active in index futures during market slumps (likely due to index futures being utilized for portfolio insurance -Salm and Schuppli, 2010; Antoniou et al, 2011) [84] and extrapolate from horizons of several days ("long memory"; Antoniou et al, 2011).…”