The effect of changes working capital on investment opportunities

The purpose of this study was to evaluate the effect of changes in working capital on investment opportunities are listed companies in Tehran Stock Exchange. For this purpose, we studied a panel data of 151 listed companies in Tehran Stock Exchange, in a seven-year period (1384-1390). We use Lymr and Hausman test model (fixed effects or random effects) was determined from regression was used to test the hypotheses. The results of the study show that There was a significant and negative relation between changes in a company's working capital and investment opportunities. Investment Opportunities, Changes Working Capital, ratio of market to book value of equity, Tobin Q ratio, ratio of earnings to price per share