Investigating Factors Affecting Stock Returns Concurrency

Stock returns Concurrency relatively new field in financial and economic research that is closely linked to economic development, financial market stability and market efficiency . also uses in Measuring Price Awareness, Asset Pricing, Forecasting and stocks synchronization can be used to measure market efficiency and many factors affect the synchronization of stock returns that the purpose of this study is to investigate the factors affecting the equity of stock returns. To this end, to test the hypotheses, data from 155 companies listed in Tehran Stock Exchange during 1385 to 1396 were used. Findings showed that the results showed that annual stock returns and turnover and company size and stock liquidity had a significant and positive effect on stock return synchronization. institutional shareholders have a significant and negative impact on stock return synchronization Company life and ownership concentration and growth opportunity do not have a significant impact on stock return synchronization.