Agency Theory

The purpose of this study is investigating and determining rate of seizing assets and acquisition other companies by public sector companies. We estimate this rate at various stages of the life cycle of the company. Therefore, according to their size and age, the companies have been divided into small, large, young, and mature groups, and for this purpose, we have collected data from a sample of 45 companies of the public sector from three Iranian provinces. We have tested our analyses from the viewpoints of agency and neoclassical theories and discussed the results of the independent t tests. The results showed that with increase in age and size, public sector companies are more likely to seize the fixed assets of other companies to restructure and achieve improved operations. However, in the case of assuming ownership of other companies done through buying the companies, most public sector companies do this in the middle of their lifetime and in the course of their growth.

The purpose of this study was to investigate the role of non-financial information analysis and risk-return analysis along with financial information in increasing the selected banks and financial institutions of Tehran Stock Exchange portfolio efficiency. To evaluate the efficiency of the portfolio, the Treynor's ratio was used and attempted to determine the Treynor's ratio of the selected optimal portfolio based on each accounting and financial information, non-financial information and risk-return analysis, and then the significant differences between the ratios were compared. also, intellectual capital, agency theory and management ability data were used as non-financial information. The 9 optimized Portfolio that were selected by any one or more of the data from financial, non-financial, and risk-return analysis and calculated Treynor's ratio for each select were used. To achieve the goal of the research, 19 banks and financial institution of Tehran stock exchange were selected as sample and analyzed. The results showed that the use of non-financial and risk-return analysis information will increase the calculated efficiency of banks portfolio using the Treynor's ratio. All of hypotheses were approved, this means that there is significant difference between mean Treynor's ratio of stock combination based on risk-return information and accounting information, agency theory, management ability and accounting information and intellectual capital.

The asymmetry of information between managers and shareholders significantly affects the company's investment decisions and exacerbates the problems of agency. It seems that these problems in developing markets such as Iran are more than developed markets. This research is an exploratory study, and it aims at reviewing the theory of agency in Iran. In the present study, based on the research paradigm, first, data acquisition strategy is selected based on a qualitative approach, and then qualitative study and analysis, quantitative approach, and factor analysis approach have been used to confirm the validity of the extracted model. Statistical analysis of research data shows that among the hypotheses of agency theory, risk aversion, supervision, and reward are revised dimensions in Iran like examples of developing countries.The results confirm the existence of assumptions; 1. Conflict of interests of manager and owner, 2. Information asymmetry, 3. Reverse choice, 4. Ethical risk, 5. Maximizing the expected utility, 6. Forcing and 7. Failure to confirm the assumption is the ability to predict the future and receive information. due to the existence of information asymmetry, higher investment risks of minority shareholders and transparency problems, the lack of ability to predict the future and receive information is necessarily confirmed.

This study aims to analyze fraudulent financial reporting based on the Fraud Hexagon theory in companies listed on the Tehran Stock Exchange. The population in this research included all the companies listed on the Tehran Stock Exchange. The samples in this research were determined using the purposive sampling method, and the selection of samples was based on the criteria determined according to the objectives of the research. The reason for using this technique was to make it easier to collect data according to the research needs. This research was conducted on the companies listed on the Tehran Stock Exchange in 2014-2023, with a statistical population of 141 companies. Finally, 1410 companies were collected for this research. The dependent variable in this research was measured using dummy variables, and logistic regression analysis was used to test the hypotheses. The results of the research indicated that the factors of collusion, CEOs' narcissism, and motivation have a significant relationship with fraudulent financial reporting. However, auditor change, CEO change, and the industry's nature do not positively affect fraudulent reporting.