The changes of companies stock price in the sthock exchange of Tehran is affected of various factors like political, economical and mental.
In this manner the presentation of financial internal information to users by the companies is one of those affective factor on trend of market stock price. Also the predict declared E.P.S of next financial period is the maine information that affects on buying or selling decisions of stocks by investor or shareholders.
The present article is a research on information content of estimated earning per share and it’s effects on stock price and trading volume in the stock exchange of Tehran.