بررسي و شناسايي مدل هاي هزينه سرمايه و عوامل مؤثر بر هزينه سرمايه در بورس اوراق بهادار تهران

Identification of cost of equity models and factors affecting it in Tehran Stock Exchang(TSE)

Most of the managers beileve that financial leverage is one of the most important leverage concepts. This concept has a key position in capital structure management. The purpose of this study is introduction cost of equity models and identification of factors affecting it in Tehran Stock Exchang . In this research, we considered the financial information which related to 56 firms for the period 1380-1384 . It was cleared that contrary to finance theory there is no significant relationship between debt ratio and cost of equity . But relationship between size and cost of equity is confirmed. Then by test of models validity ,Was cleared that CAPM model has more validity than other models, and results has been extracted on the basic CAPM model.