This paper presents a study to measure the effects of return on investment, sales growth rate, volatility investment, cash flow and structure of institutional shareholders on the ratio of debt to equities. The study selects 102 firms listed on Tehran Stock Exchange and, using regression technique with Panel data, examines five different hypotheses over the period 2008-2012. The results indicate that there was a negative and meaningful relationship between return of investment and the ratio of debt to equities and a positive and meaningful relationship between sales growth and the ratio of debt to equities. Moreover, there were positive and meaningful relationships between volatility of investment as well as cash flow and the ratio of debt to equities. Finally, the survey has indicated that there was a negative and meaningful relationship between the structure of institutional shareholders and the ratio of debt to equities.
One of the most important concerns in privatization of governmental banks is to see whether there is any change on the performance of the privatized banks or not. The proposed study of this paper performs an empirical investigation on some privatized banks. In our study, we measure two well-known financial figures including return on assets and return on equity two years before and after privatization program. The proposed study uses non-parametric analysis to perform the investigation. The results indicate that there is a meaningful difference between the performance of these banks before and after privatization.