“…First, studies which build their own ratings, the so‐called academic indexes (see, for instance, Bai, Liu, Lu, Song, & Zhang, 2004; Bebchuk, Cohen, & Ferrell, 2009; Gompers, Ishii, & Metrick, 2003). Secondly, there is a group of studies on this topic that have relied on the use of governance ratings developed by rating agencies, known as commercial governance indexes (see, e.g., Aggarwal, Erel, Stulz, & Williamson, 2007; Brown & Caylor, 2006; Renders, Gaeremynck, & Sercu, 2010; Núñez Izquierdo & Garcia‐Blandon, 2017). While the bulk of the first group of studies using academic indexes reveals a positive significant relationship between governance and firm performance, the second line of research has yielded non‐conclusive results.…”