“…By the beginning of the XXI century, EMH came under scrutiny. A more nuanced understanding of the markets’ mechanisms views stock prices as, at least partially, predictable and past prices’ patterns and ‘fundamental’ variables as a prediction base for their future evolutions (for some discussions and empirical evidences, see ( Brown, 2011 , Caporale et al, 2018 , Gippel, 2012 , Holtfort, 2019 , Malkiel, 2003 , Shostak, 1997 )). Although, at the moment, there is no single unified alternative to EMH, ‘behavioral finance’ ( Hirshleifer, 2002 , Kapoor and Prosad, 2017 , Ritter, 2003 ), the ‘adaptive markets hypothesis’ (AMH) ( Lo, 2004 , Lo, 2005 ) or ‘fractal market hypothesis’ (FMH) ( Anderson and Noss, 2013 , Peters, 1994 ) provide insights about the mechanisms that might push the markets in (relative) inefficiency areas.…”