نشریه پیشرفت های مالی و سرمایه گذاری
پیاپی 1 (زمستان 1399)

The impact of corporate strategy decisions on capital structure has attracted researchers and managers for decades, though these decisions have so far yielded complex and uncertain results. While previous studies have focused on the effective effects of a single strategy at one point in time, this study attempts to provide an overview of the impact of strategic decisions on capital structure. According to the hierarchical strategy theory, there are three effective strategies, namely external activity, diversification and integration (integration), at the company level. This study was conducted using the annual data of listed companies in Tehran Stock Exchange during the period 2013-2019. By screening, 152 companies were identified as the sample of the study. Multivariate linear regression based on panel data was used to test the research hypotheses. The results of empirical evidence show that the aforementioned strategies influence the structure of corporate capital simultaneously and independently. Integration and external activity are inversely related to debt ratio, whereas diversification is directly related to debt ratio. The findings of this study contribute to the richness of the work on capital structure / strategy and help more academics and managers understand the impact of strategy on firm capital structureKeywords: Capital structure, corporate strategy, integration, diversification, External activity

Financial markets play a vital role in macroeconomics and sustainability. Therefore, considering this role in macroeconomics, it seems necessary to study the behavior of managers and investors regarding the tendency to imitate the actions of others and the formation of mass behavior and the impact of this behavior on the value of companies. The main purpose of this study is to investigate the bias of corporate mass behavior with the value of the company at the company, industry and the entire research community, which can help to develop behavioral financial issues. For this purpose, the behavioral bias of managers and investors was examined from the perspective of mass production at the company and industry levels and its effect on the value of the company was analyzed. To test the hypotheses, a sample of 44 companies active in the chemical products industry for the years 1391 to 1397 was selected and correlation and multivariate regression tests were used. The experimental results of this study indicate the existence of bias in the mass behavior of managers and investors at the industry level. The results showed that stock prices have a significant mass behavior at the company level. It was also confirmed that investor behavior bias can affect the value of the company. Finally, it was confirmed that the behavior of managers has a significant effect on the value of the company.

The purpose of present study is to investigate the relationship between voluntary disclosure of extensible financial reporting language and stock market valuation and the role of corporate governance in companies listed on the Tehran Stock Exchange. For this purpose, 140 companies during the period 2014-2019 were surveyed. In this research, the information related to the variables was extracted from Rahavard 3 software and was summarized, classified, calculated by Excel software and finally hypotheses tested by Eviews and stata software at a confidence level of 0.95 . The findings of the first hypothesis showed that there is a significant and positive relationship between voluntary disclosure of extensible financial reporting language and stock market valuation in companies. Also, the findings of the second hypothesis showed that there is a significant and positive relationship between corporate governance and stock market valuation in companies. In addition, the findings of the third hypothesis showed that corporate governance has a positive and significant effect on the relationship between voluntary disclosure of extensible financial reporting language and stock market valuation in companies.

in the theoretical literature based on normal theory, dividend policy as a mediator is the intermediary between corporate governance and free cash flow. This requires empirical testing for users to confirm the mediating role of dividend policy. Accordingly, the purpose of the present study is to test the Sobel test to examine the mediating role of dividend policy on the relationship between corporate governance and free cash flow. The statistical population of this study includes all companies listed in Tehran Stock Exchange. The timeframe for doing the research is from 2011 to 2018. The sample size is 94 companies based on the systematic elimination method. The research method is based on hybrid data and multivariate least squares regression model using Sobel test. Evidence suggests that the mediating role of dividend policy has a significant effect on the relationship between corporate governance and free cash flow, meaning that because of the importance of dividend policy and corporate governance mechanisms with free cash flow, intermediary role The total dividend policy has a minor effect on free cash flow because not all interpretations are absorbed by corporate governance mechanisms.

Theoretically, firms should reduce information risks to provide a transparent environment for different groups in capital market to make decisions. Therefore, identifying potential risk factors is important. This paper investigated the impact of earnings forecast bias and information asymmetry in imperfect competition market on the idiosyncratic risk. It is used the standard deviation of residuals extracted from capital asset pricing model to measure the idiosyncratic risk. Earnings forecast bias is measured based on the absolute value of difference between actual value and forecasted value of earnings per share scaled by the beginning stock price. In addition, information asymmetry is assessed based on the stock price bid-ask spread. Using filtering method, 147 firms listed in Tehran Securities & Exchange during 2013 to 2018 selected as research population. Research hypotheses analyzed through multivariate regression models. Research results showed that more earnings forecast bias lead to increase the idiosyncratic risk. In addition, high level of information asymmetry caused to increase the idiosyncratic risk. Also information asymmetry lead to strengthen the positive relation between earnings forecast bias and idiosyncratic risk. As a whole, firms with high level of earnings forecast bias & information asymmetry as inverse proxies of information quality which have worse information environment have more idiosyncratic risk.

The present study examines the relationship between fraudulent financial statements and the quality of financial reporting with emphasis on the effectiveness of the experience and influence of managers in companies listed on the Tehran Stock Exchange. The present study is applied and from a methodological point of view, causal (post-event) correlation. The statistical population of the study is all companies listed on the Tehran Stock Exchange and using the systematic elimination sampling method, 131 companies were selected as the research sample and were examined over a period of 7 years between 1391 and 1397. Findings showed that there is an inverse and significant relationship between financial statement fraud and the quality of financial reporting, between managers 'experience has no effect on the relationship between fraudulent financial statements and financial reporting quality, and also, managers' influence on the relationship between fraudulent financial statements and quality Financial reporting has a positive and significant effect. Therefore, it is concluded that influential managers can increase or decrease the quality of their financial reports by controlling fraud factors and managing earnings in financial statements.