مسعود مشکین

In this study, information content of operating income and cash flow operating and the effect of information asymmetry on information content of these variables to predict stock return in the 70 companies accepted on Tehran Stock Exchange in the period of 1385 to 1389 and use of linear multiple regressions was studied. Results showed that operating income and cash flow operating has information content and can explain stock return, and the information content of operating income is more than cash flow operating. Also, the information asymmetry effect the information content of operating income and cash flow operating and with increasing information asymmetry, information content of cash flow operating is increasing.