The conflict of interest between firm's stockholders and managers is a noteworthy concern in corporate finance discussions todays. The purpose of the present research is to investigate the effect of corporate governance criteria on performance of holding companies and subsidiaries in Tehran Stock Exchange. The study can be categorized as applied research regarding objective and descriptive and correlation research concerning research method. The study considers corporate governance criteria and market value added as research variables. Research sample contains holding companies and their subsidiaries in Tehran Stock Exchange which are selected via some criteria, including 27 holding companies and 89 subsidiaries over 2008 to 2015. For testing the research hypotheses, panel data analysis and multiple regression models are employed. The results indicate that board composition and ownership structure of holding companies significantly affect companie's performance. Moreover, holding companies performance has a significant effect on subsidiaries performance.

The aim of the current research was to present an optimal model for total productivity based on the combination of ownership and supervisory efficiency of independent managers of companies listed on the Tehran Stock Exchange. This research was a descriptive-deductive description in terms of its practical purpose and the method used. In order to analyze the data using the panel data method and to test the hypotheses, multiple linear regression tests were conducted in a sample consisting of 80 selected companies admitted to the Tehran Stock Exchange in the period of 1393-1400. In this research, the rate of return on equity and the ratio of book value to market value were used to measure the productivity index. The results of the estimation of the research models showed that when the variable rate of return on equity is considered as a productivity index, the composition of ownership has a significant negative effect on productivity. In fact, greater concentrated ownership in the institutional and major shareholders of the company causes a significant decrease in the productivity of companies; however, the increase in the number of non-commissioned members compared to the total number of board members as an indicator of the supervisory efficiency of independent directors does not have a significant effect on productivity. The effects of financial leverage and company size on the productivity of companies were found to be both negative and positive, that is, when the variable of the ratio of book value to market value is considered as a productivity index, ownership composition has a negative effect on productivity, but the effect of increasing the supervisory efficiency of independent managers on productivity was found to be significantly positive. As a result, reducing the concentration of managers’ ownership and increasing the number of non-commissioned board members can improve productivity.

Corporate governance plays an important role in ensuring the quality of the financial reporting process. Many of recent corporate failures have been attributed to poor governance, which is manifested in fraudulent financial reporting and earnings mismanagement. Therefore, the purpose of this study is to investigate the impact of corporate governance mechanisms on financial statements fraud of the listed companies in Tehran Stock Exchange (TSE). To achieve this aim, Board Composition, Ownership Concentration and Institutional Ownership were used as corporate governance mechanisms. Furthermore, nineteen red flags of fraud extracted from auditing standard No. 240 along with Data Mining techniques such as K-Means clustering used to discriminate financial statements fraud cases. The data sample is restricted to 182 companies in the (TSE) during 1381 to 1393. In conducting this research, three main hypotheses were proposed to examine the impact of board composition, ownership concentration and institutional ownership on fraudulent financial reporting across the firms and during the designated period. Accordingly, the statistical technique known as the “Panel Data” was exerted to test the research hypothesis. The results of the hypotheses testing demonstrate that fraudulent financial reporting is negatively affected by proposed corporate governance mechanisms, after controlling for potential confounding effects.

The purpose of this article is to investigate the impact of ownership structure and board composition on the technical efficiency of the listed companies on the Tehran Stock Exchange. In attempting this, the technical efficiency of the examined companies was first determined by using Data Envelopment Analysis (DEA). Then, the relationship between ownership concentration, institutional ownership, board composition and technical efficiency was investigated. The data sample is restricted to 82 companies during an 8 years period from 1381 to 1388. The results of hypothesis testing using Panel Data Regression indicate that there is a significant positive relationship between institutional ownership and technical efficiency even after controlling for potential confounding factors. However, the relationship between ownership concentration, board composition and technical efficiency is positive and insignificant. When the impact of all these corporate mechanisms was considered together, the preceding results holds true. This finding is consistent with the active monitoring hypothesis, indicating that institutional ownership play a significant role in monitoring management and reducing the agency costs.

This research aims to examine the effects of corporate governance on earnings informativeness of the companies listed in Tehran Stock Exchange. The study takes the variables of ownership concentration, management ownership, institutional ownership, corporate ownership, board composition and size of the board to analyze earnings response coefficient. The sample consists of 70 companies in the years 2002 to 2008. The statistical model used for testing the hypothesis is ‘panel data’. The results show that earnings informativeness has a positive and significant relationship with ownership concentration and institutional ownership, while there is no evidence indicative of a meaningful relationship between variables of management ownership, corporate ownership, board composition and size of the board and earnings informativeness.

The main purpose of this Paper is to investigate the relationship among firm performance, firm executive system, and environmental disclosure quality. Population of this study includes all firms listed in TSE for 2007 to 2012 among which 137 firms (809 views) are selected as sample after deleting the redundant observations. In this study firm performance, board composition, ownership percentage of institutional investors are considered as independent variables.
Using panel data with random effects, the results of multiple regression model indicated that there was a significant relationship between firm performance and board composition and environmental disclosure quality. Moreover, the results showed that there was a contrastively significant relationship between ownership percentage of corporate governance and environmental disclosure quality. Also, no relationship was found between ownership percentage of stakeholders and environmental disclosure quality of the firm.

The fall of the Sasanian is one of the important events of Iran history which led to major developments such as change of religion, culture, political structure, demographic composition and land ownership. Meanwhile, the change in land ownership, which was considered the economic pillar of society and was based on tribute and taxes, was great importance because it affected various aspects of economic and social life of people. Khorasan and Transoxiana, the most important northeastern states of Iran, where most affected by the change in land ownership. So far, however, much research has been done on the consequences of the Arab invasion of Iran, including Khorasan and Transoxiana, but independent research on the causes and factors affecting the change of land ownership in Khorasan and Transoxiana, the method of change and its results has not been done. Therefore, in this research, an attempt has been made to answer the above questions by relying on primary sources and by descriptive-analytical research method. It seems that the type of land ownership before the conquests, how to conquer the land and the motivation of the Arabs to settle in the conquered areas each played a role in how to change land ownership.

Dividend policy constitutes an effective factor on shareholders wealth maximization, as the main goal of the firms. For this reason, the question of dividend policy has been one of the most important topics in corporate finance. This study investigates the effects of ownership structure and board composition on dividend policy of the firms listed in the Tehran Stock Exchange. In this regard, multiple regression is used and the effects of earning growth and previous year dividend policy is controlled. Investigations of the 77 firms from 1382 to 1386 reveal that the corporate ownership and board independence, positively and institutional ownership, negatively affect the dividend payout ratio of the firms listed in the Tehran Stock Exchange. However, no evidence confirming significant correlation between managerial ownership and ownership concentration with dividend policy is found.

In this study, the relationship between the some of corporate governance mechanisms and corporate financial performance after Initial Public Offerings (IPOs) in Tehran Stock Exchange (TSE), based on data from 70 companies during the years 1381–1387 (2003–2009) are examined. Corporate governance mechanisms includes Ownership structure (i.e., Institutional ownership, Managerial ownership), and Board composition (i.e., the percentage of Non executive director or Board independence, and CEO duality) in order to evaluation of the, return on asset and Tobin’s Q is used. Statistical method used to test hypotheses is panel data approach. Findings show that institutional ownership and managerial ownership are positively related with firm performance after going public. Moreover, the percentage of non executive director improves firm performance. However, there is no relationship between CEO duality and firm performance.

Research The purpose of this study was to investigate the relationship between social performance, ownership structure and corporate governance in Tehran Stock Exchange during the period of 2011-2014.
Research After applying the constraints on the statistical society, 92 firms (555 years-companies) were selected as samples. In this study, data from the combination (year-company) was used and data were analyzed using linear regression statistical technique and using Eviews software.
Research findings: The findings from data analysis indicate that there is no meaningful relationship between ownership concentration, institutional ownership, government ownership, board independence, corporate size, financial leverage, and social responsibility, but between the sizes of the board, the dichotomy of the CEO's duty there is a meaningful relationship between the rate of return on assets, liquidity and social responsibility.
Research According to the findings, it can be stated that the rules and their implementation on social responsibility, legal requirements for disclosure of financial information, the attention of investors and shareholders to the corporate approach and objectives, and the structure of ownership and composition of their board of directors Has a significant impact on corporate social performance, and the positive outcomes of social performance will lead to corporate competitive advantages and positive outcomes in other corporate financial activities.