This paper presents an empirical investigation to study the effect of bank ownership concentration on capital adequacy and liquidity on 14 selected private Iranian banks located in city of Tehran, Iran. The study uses a linear regression model where ownership concentration is independent variable, size, leverage, growth domestic product and revenue growth are control variables and liquidity and capital adequacy are dependent variables. Using historical information over the period 2010-2013, the study has determined a negative and meaningful relationship between liquidity and ownership concentration. However, the study has determined a positive and meaningful relationship between capital adequacy and ownership concentration.

In the present study, the separate and simultaneous role of concentration and type of ownership on corporate value is investigated. In this study, the ownership structure is classi?ed into four classes: the institutional ownership, the corporate ownership, the management ownership and the foreign ownership. In addition, di?erent attitudes regarding the above ownership are also tested, that is, active monitoring hypothesis and interest convergence hypothesis. Since, in the sample research no information was found about foreign ownership, this type of ownership was not examined. However, in the case of the other ownerships, a separated hypothesis was developed based on various techniques and their in?uence on the corporate value was examined. For each hypothesis, a multiple linear regression model is de?ned based on the dependent variables. Companies listed in securities exchange commission of Iran makes up the statistical community of present study and the sample consists of 90 companies during 2002-2008. Two types of tests, including correlation test and cross multiple regression test are implemented to examine the hypothesis. Generally, the results reflect no signi?cant relationship between the concentration of ownership and the corporate value. The results of the study show that, while there is no relationship between the institutional ownership and management ownership and the corporate value, there is a signi?cant relationship between the corporate ownership and the corporate value.