the efficacy of auditor's report on reported accounting information appertain in Tehran stock exchange

This research aims to investigate the efficacy of auditor's report on reported accounting information appertain in Tehran stock exchange. We introduce two hypothesizes about it. is there relationship between auditor's report type on operation information relationship and firm's financial position(return of asset and return of sale) on stock return? and also is there relationship between auditor's type on operation information relationship and firm's financial position (return of asset and return of sale) on?. We gather data from available information in RAHAVARDENOVIN software and financial statement and other financial reports in time frame from 1393 to 1397 in Tehran exchange stock. Results shows that, there is affirmative significant from auditor's report type on operation information relationship and firm's financial position(return of asset and return of sale) on stock return and also there is affirmative significant from auditor's type on operation information relationship and firm's financial position(return of asset and return of sale) on stock return.