Information Disclosure Volume and Changes in Stock Returns in Stock Exchange

The main purpose of creating a corporate is achievi ng profit or increasing the wealth of the owners (shareholders) which is pursued by the corporate management and corporate stock return is used as a criterion for evaluating management performance . Since the minor shareholders don't have enough awareness of the firm internal information f ur decision making purposes and are always seeking for obtaining information fo r predicting stock profit and future profit changes as well as information for ev aluating relative risk of respective firms so that they can invest on their s tocks, the firms disclose their financial and non-financial information in the form of financial reports annually which increase awareness of shareholders on financi al status and performance results and financial flexibility of the corporate in each period.Thus, findings of the researches in this regard can be useful for fin ancial reports and involved agents for increased awareness of the disclosure na ture so that they revise informing process and decision making methods throu gh appropriate training.