The Effects of Price Limit Change on the Trade Volume Shares and Return for Companies Listed in Tehran Stock Exchange (TSE)

In this study the effect of “changing the amount of price limit” on “stock returns” and “volume shares” in listed companies of Tehran Stock Exchange has been studied. The purpose of this study is to survey the information contents of “changing the amount of price limits” and its effect on the “stock returns” and “volume shares “. So 257 companies were studied for a period of 7 years from 1382/01/01 till 1389/01/01; and the researches data include 397 firm-sections for 257 companies from 1384 till 1388 at 3 section of changing price limit. This data involve averages of trade volume and stock returns for 2 months before and 2 months after the changing in the amount of price limit date. In this research, the Paired-Samples T Test method has been used to test hypotheses of research. The results show that 3% decrease in price limit at 1384/08/21 has increase stock returns and volume shares. And 3 and 0.5% increase in price limit at 1384/09/12 and 1388/08/16 have stock returns to decrease, but have not been any effect on volume shares.