study of relationship between working capital strategy and profitability measures the companies in automobile, pharmaceutical and mineral industries in tehran stock exchange

working capital management is one of the management structure of an organization that plays a fundamental role and also is as a major force in evolution of the organization. so it is important to acquire economic profits. this study investigates the relationship between working capital policy and profitability of companies in automobile, pharmaceutical and mineral industries in tehran stock exchange. the sample was selected consisting of 235 data -year of listed companies in tehran stock exchange in automobile, pharmaceutical and mineral industries from 1383 to 1387. the methodology of this research was discriptive and the hypotheses were analyzed by using pearson correlation and regression model. the results of this study indicate that there is no direct and significant relationship between working capital management strategies with earning per share and return on equity, but there is a direct and significant relation between working capital management strategies and return on investment but not very strong correlation, and only 6% of the variation in the return on investment can be justified by the variation in the working capital management strategies.