تاثیر اختلاف قیمت پیشنهادی خرید و فروش سهام بر بازده غیرعادی سهام

This study examines the impact of proposed price difference between buying and selling stocks on abnormal return listed companies in tehran stock exchange deals. in this study, a sample of 94 firms in tehran stock exchange was selected using a sampling.in this study, the effect of the difference between the price of an offer to buy or sell stocks on abnormal return listed companies in tehran stock exchange for the period 1397 to 1401 took place in tehran stock exchange a total of 145 observation period was used for. statistical methods used in this study were multiple regressions and paired t-test and the mean. the results show that the difference between the price of an offer to buy or sell stocks has a significant impact on abnormal return and the difference between the price of an offer to buy or sell stocks at different levels of abnormal return are significantly different.