The relationship between earnings quality, voluntary disclosure, information asymmetry at the expense of equity in companies listed on the Tehran Stock Exchange

Capital market investors by investors on the basis of return and risk objectives and an acceptable level takes place. Returns expected by investors in their investment firms as the costs will be assessed. Given the importance of this issue, this study examines the relationship between earnings quality, voluntary disclosure, information asymmetry will be discussed at the expense of equity. The sample consisted of one hundred twenty-seven companies of Tehran Stock Exchange In the period 1393- 1389 and multivariate regression using software Eviews, Spss and STATA was investigated. The results showed the voluntary disclosure of earnings quality and the cost of equity and there is a significant negative relationship In other words, improve the quality of voluntary disclosure of income and reduce the company's cost of equity. The relationship between information asymmetry and cost of equity is a significant and positive ruling And increase the cost of equity is information asymmetry.