This paper aims to investigate the effect of firm reporting quality, timeliness andquantity for disclosure and reliability of financial reports on the reaction of stockprice delay. Statistical population includes 111 active firms in Tehran stock exchangeduring 2010-2014 using Cochrane method with the confidence level of95%. Totally, they were 555 firms-years. In this paper, linear and nonlinear regressiontests have been used to investigate the research hypotheses, analyze thedata and examine the hypotheses using Eviews software. Results indicated that thescore of disclosure quality, timeliness and reliability affected the stock price delay;also, the mentioned effects were confirmed in the firms with high risk of lackof funds.
