The Examination of Relationship between Stock Systematic Risk and Skewness of Returns Studying the Effect of Capital Structure on the Return on Assets and Economic Value Added by Attention to Intensity of Product Market Competition in the Industry

Creating value for stockholders is one of the important objectives of the companies, and will be realized when the firm enjoy financial health. Financing structure –as one of the important managerial decisions, affect the firms` behavior in product market, their efforts to compete, and finally their competitive return. In financing decisions, it’s important to concern about market competition to achieve target return. In this study we examined the effect of capital structure on firm performance concerning product market competition. The sample includes 81 manufacturing companies listed in Tehran Stock Eschnage, and the time period includes 2009-2014. The results show negative effect of financial leverage on ROA. Also the mediation role of capital market competition is negative and significant. But this mediation role is significantlye positive when the dependent variable is economic value added.