“…There is a vast amount of literature on bank efficiency and productivity that examines a number of aspects such as investigating the determinants of efficiency (Canhato and Dermine, 2003;Casu and Molyneux, 2003); ownership (Havrylchyk, 2006;Sturm and Williams, 2004); stock returns and efficiency (Beccalli et al, 2006;Erdem and Erdem, 2008); corporate events and efficiency (Avkiran, 1999;Sherman and Rupert, 2006); regulatory reform, liberalization and efficiency (Brissimis et al, 2008;Fethi et al, 2011;Isik and Hassan, 2003;Tsionas et al, 2003); consolidation and its impact on banksÕ efficiency (Cuesta and Orea, 2002;Vivas et al 2011); and comparison of different frontier techniques (Delis et al, 2009) 3 . However, to our knowledge, there is an insufficient number of studies that formally consider the relationship between banksÕ regulated capital and productivity (Fethi et al, 2012).…”