“…Given their increasing importance, a number of studies have been carried out to analyse the main features of these newly created markets, including returns and risk (e.g., Balciar et al, 2017;Liu and Tsyvinski, 2018;Caporale and Zekokh, 2019), market efficiency (e.g., Urquhart, 2016;Bariviera, 2017;Nadarajah and Chu, 2017) and anomalies (Caporale et al, 2018;Caporale and Plastun, 2019a, 2019b, 2019c, illegal activities (Foley et al, 2018Gandal et al, 2018;Griffin and Shams, 2018), hedging properties (e.g., Dyhrberg 2016aDyhrberg , 2016bBaur et al, 2018;Bouri et al, 2017aBouri et al, , 2017bBouri et al, , 2017c, initial coin offerings (ICO) (Kostovetsky and Benedetti. 2018;Howell et al, 2018;Lee et al, 2018;Li and Mann, 2018;Malinova and Park, 2017;An et al, 2020), the effects of cyber-attacks An et al, 2020;Shanaev et al, 2019), and the economic implications of the emergence of this new type of asset (e.g., Böhme et al, 2015;Dwyer, 2015;Harvey, 2016;Raskin and Yermack 2016;Bariviera et al, 2017;Biais et al, 2018;Schilling and Uhlig 2018).…”