هدف پژوهش حاضر بررسی رابطه عدم تقارن اطلاعاتی و دیدگاه اخلاقی مدیران مالی شرکت‌های پذیرفته شده در بورس اوراق بهادار تهران است. برای سنجش عدم تقارن اطلاعاتی از معیار دامنه تفاوت قیمت پیشنهادی خرید و فروش استفاده شد. همچنین دیدگاه اخلاقی مدیران مالی از طریق پرسشنامه موقعیت اخلاقی مورد سنجش قرار گرفت. در این پژوهش 72 شرکت پذیرفته شده در بورس اوراق بهادار تهران در سال 1396 بررسی شد. جهت آزمون فرضیه‌های پژوهش از روش حداقل مجذورات جزئی و نرم‌افزار Smart PLS استفاده شده است. نتایج پژوهش نشان داد که بین عدم تقارن اطلاعاتی و دیدگاه آرمان‌‌گرایی مدیران مالی در بورس اوراق بهادار تهران رابطه منفی و معنی‌‌داری وجود دارد. همچنین بین عدم تقارن اطلاعاتی و دیدگاه نسبی‌‌گرایی مدیران مالی در بورس اوراق بهادار تهران رابطه مثبت و معنی‌‌داری مشاهده شد. در نتیجه، دیدگاه آرمان‌گرایی اخلاقی مدیران منجر به کاهش عدم تقارن اطلاعاتی می‌شود. Manuscript profile

The present study aimed to evaluate the effect of entrenchment of managers with personality types A and B through corporate social responsibility (CSR) disclosure with the goal of hiding earnings management on firm value. The research population included companies listed on the Tehran Stock Exchange during 2013-2018. In total, 149 firms were selected by systematic elimination method. In this study, the variables of managers’ personality type, earnings management, and social responsibility disclosure were considered as independent variables, whereas firm value was recognized as a dependent variable. We used the library method to collect a part of the data. In addition, managers’ personality type was assessed using Bortner’s questionnaire. Moreover, we applied descriptive and inferential statistics to describe the collected data. Furthermore, data analysis was performed using ANOVA, F-Limer, Hausman, and Jarque and Bera tests. The Eviews software was used after multivariate regression test to confirm or reject research hypotheses. According to the results of the study, social responsibility disclosure by managers with different personality types with the goal of hiding earnings management affected firm value. Manuscript profile

The aim of this study is to investigate the effect of CEO’s financial expertise on Stock Price Delayoflisted Companiesin TehranStock Exchange. For this purpose one hypotheses are developed and data on the 107 companies in Tehran Stock Exchange for the period of 2011 to 2018 were analyzed. This regression model using panel data with fixed effects approach and tests. The resultsshowed thatthe concentration CEO’s financial expertise hassignificantNegativeimpact onStock Price Delay. Therefore, the research results indicate that the Powerful executives have more independence and you have more supervisory roles on the board this reduces the disadvantages of stakeholder rights and reduce the agency costs , and thus reduce agency costs reduce information asymmetry and reduce the opacity in financial and thus Decrease Stock Price Delay. Manuscript profile

News and information reflect on the stock prices rapidly in the capital market. But some factors cause delays in reaching the stock market to its intrinsic value. This study aims to investigate the effect of CEO Power on stock price delay of listed Companies in Tehran Stock Exchange. In order to measure the power of the CEO, six different criteria, based on the research of Lisic et al. have been used. For this purpose, data related to 107 companies in Tehran Stock Exchange from 2011 to 2018 were analyzed. The regression model used in this research has been assessed using panel data with fixed effects approach. The results showed that CEO power has a negative and significant impact on stock price delay. The results also indicate that the powerful executives have more independence and play a more supervisory role over the board of directors; This reduces the infringement of the stakeholder rights and lowers the agency costs. Lower agency costs result in less information asymmetry and lower financial information transparency, and ultimately, reduces the stock price delay. Manuscript profile