Modeling daily price fluctuations, liquidity and the effect of magnetism on the temporary cessation of trading on the Tehran Stock Exchange

The importance of volatility in financial markets is that sharp price fluctuations in markets lead to a decrease in public confidence and, as a result, reduce the demand for investors in the market, and this will reduce economic growth in the future. Had. The purpose of this study is to investigate the effect of daily price fluctuations, liquidity and the effect of magnetism on the temporary cessation of trading on the Tehran Stock Exchange. In this study, to test the relative effectiveness of the symbol stop and the price fluctuation limit, the changes in the mean from the pre-event period to the post-event period have been investigated. 600 trading interruptions and 1149 price fluctuations of 120 selected companies by elimination sampling method during the period 2010-2020 have been investigated. The statistical test of the research performed using SPSS software. The results show that the factor of daily price fluctuations, liquidity and the effect of magnets on the stoppage of trading and the development of research models with this factor and the formation of corresponding modified models, improves the performance of those models in explaining stock stops.