5. Conclusion
This paper aims to provide an innovative contribution to the current literature on corporate governance by determining bank performance from different perspectives. First, with respect to earlier studies this paper’s approach is novel, as it considers both the ownership nature and concentration, as well as their interaction, using continuous variables. Specifically, we distinguish eight categories of shareholder, which should be characterized by specific return-risk profiles consequence of their institutional roles and incentives. We use the proportion of each shareholder type participation to investigate how a change in j CORPORATE GOVERNANCE j Downloaded by UNIVERSITY OF TOLEDO LIBRARIES At 21:53 10 February 2018 (PT) ownership structure is related to bank performance. In this way, our analysis allows more precise inference in the data, attenuating both the aggregation bias among heterogeneous owners and the possible distortion in adopting a binary variable. Second, the empirical model provides new evidence on the above-described ownership structure along the profile of time-varying technical efficiency measures, controlling for random bank effect (bank heterogeneity). Third, the study provides new evidence that is not univocally in line with the literature. The most striking result is that block shareholding can constitute an optimal governance mechanism, but its effect on bank performance is also sensitive to the type of shareholders. Consequently, the entrenchment view hypothesis is rejected. However, the literature uses different measures of concentration, mainly based on a qualitative concentration measure or at least a continuous concentration variable within each shareholder category. Instead, this study uses a variable that measures the direct shareholder concentration at the bank level.