Corporate Social Responsibility and Information Asymmetry (Companies listed on the Tehran Stock Exchange)

In recent years, with rising social expectations of the organizations, legislators, customers, public institutions and government have attention to the issue of corporate social responsibility (CSR). This paper investigates the relationship between the corporate social responsibility and information asymmetry of the firms listed on the Tehran stock exchange during 2013. Due to the lack of CSR reporting in Iran and the lack of firms rating Institutions in the field of social responsibility and a general, lack of transparency in this section, we usedquestionnaire survey to determine the level of corporate social responsibility. Questionnaires were sent to 138 companies and 84 companies responded to the questionnaires. The information asymmetry is measured by bid-ask spread. Using Regression Model, the results show that corporate social responsibility was unrelated to information asymmetry. These results suggest that information asymmetry and pricing of shares will not be affected by corporate social responsibility.