“…Negative bubbles in cryptocurrency markets are also observed in certain periods (Fry and Cheah, 2016). These market features imply that considering past price information is beneficial for investors, as reported by Grosby, Ahmed, and Sapkota (2020), and 4 Shen, Urquhart, and Wang (2019) and Philippas, Philippas, Tziogkidis, and Rjiba (2020) find that media attention is a driving force a change in cryptocurrency prices. In contrast, some studies present that macro fundamentals such as money supply are important in the long-run (Kristoufek, 2015;Bouoiyour, Selmi, Tiwari, and Olayeni, 2016;Li and Wang, 2017).…”