M.A. Thesis:

Factors Affecting the Benefits of Banks with the Controlling Role of Ownership Concentration

Today, one of the most important financial issues of banks is measuring their profitability. Profitability measurement of banks is important because it is the basis for many decisions inside and outside of the banks. The purpose of this research is to investigate the factors affecting the profitability of banks with the moderating role of ownership concentration. The realm of this research is the banks admitted to the Tehran Stock Exchange and the realm of time between 2012 and 2017. In this research, the variable of ownership concentration was considered as a moderator variable. This variable is for banks whose major shareholders have at least 20 percent of the bank's shares, and holds the value of one for banks that do not have these conditions, and the ownership concentration variable has zero. In this study, 14 banks were selected as the final sample. The results of the research showed that there is a significant positive correlation between capital adequacy and profitability of the bank. Also, there is a significant negative relationship between cost efficiency and profitability of the bank. In addition, the other hypothesis of this study, which confirmed the relationship between asset quality and bank profitability, was confirmed and showed that there is a negative relationship between these two variables. The other three hypotheses of the study, which were the effect of moderating the variable of ownership concentration on the first three hypotheses, proved that the ownership concentration variable correlates the relationship between the two variables of capital adequacy and profitability of the bank as well as the relationship between the two variables of the efficiency of the bank's cost and profitability and in the positive direction But the variable ownership concentration moderates the relationship between the two variables of asset quality and profitability and undermines the relationship between them. The results of the study showed that the variable of ownership concentration moderates the factors affecting bank profitability in order to increase profitability.

Keywords: : ownership concentration, bank profitability, capital adequacy, asset quality, cost efficiency