“…The literature on financial market efficiency has been enriched by new methodologies for evaluating efficiency, notably the Hurst exponent (Hurst, 1951). The latter is considered a primary measure for detecting efficiency and long-run memory in financial time series (Corazza & Malliaris, 2002;Cajueiro & Tabak, 2005;Grech & Pamula, 2008;Onali & Goddard, 2011;Mynhardt et al, 2017;Al-Faryan & Dockery, 2021;Caporale et al, 2022;López & Mansilla, 2021;Tadoori & Vadithala, 2022;Vogl, 2023;Danila, 2022;Gómez-Águila et al, 2022;Metescu, 2022;Takaishi, 2022).…”