The impact of firm's cash holding level on the relationship between working capital and profitability

Efficient working capital management is important for many firms, special firms with financial constraint. Hence, this paper examined the relationship between firm's working capital and its profitability, and then the adjustment role of cash holding on this relationship was examined. The sample used in this study consists of 104 listed companies in Tehran stock exchange, between 2004 and 2013. In order to test the research hypotheses, two-step Generalized Method of Moments (GMM) were used. Controlling the endogeneity problem, which can affect the results, is the advantage of GMM method.
Findings of the research indicated that there is significant relationship between firm's working capital and its profitability. This is because of investor's attention to working capital level in their decision making. Findings indicated that cash holding level had no effect on the relationship between working capital and firm's profitability and there is no U shape relationship between working capital and firm's profitability.