عنوان مقاله [English]
Information asymmetry is formed as a result of the relationship between the representation and separation of ownership and management and among different factors that can modify this relationship, is the structure or type of ownership. The aim of this paper was to investigation of relationship between type of ownership (institutional and Single) with information asymmetry with an emphasis on reliability of financial information as a moderator variable. The percentage of institutional ownership and bid-ask spread were used to measuring to type of ownership and information asymmetry respectively. In order to calculate the reliability of financial reporting, was used the report of Stock Exchange Organization named “Ranking of companies listed on Tehran Stock Exchange in terms of disclosure and quality of information appropriate”. Statistical population of study is all companies listed on Tehran Stock Exchange in the period 2008-2016. The results show that the institutional ownership in companies more, reliability of financial information, affect the information asymmetry as moderating variable, but there is not this relationship in companies with individual ownership.