investigating the effect of classification shifting on investment efficiency with respect to the role of information asymmetry.

The main purpose of investigating the effect of classification shifting on investment efficiency with respect to the role of information asymmetry. In order to investigate this research, two hypothesis have been developed and to test the hypotheses, linear regression patterns based on panel data method have been used. To this end, financial information issued in financial statements of 191 companies registered in tehran stock market for the years of 2016-2021 are used. The present research is applied in terms of the purpose and in terms of purpose and in terms of the method and nature are of the type of correlation. Considering that the data in question are real and historical data, The research is classified as post-event. Excel and EViews 10 software were used to analyze the observations. Findings obtained from the study and testing of research hypotheses showed that classification shifting has a significant and inverse effect on investment efficiency. Also, information asymmetry has a significant and inverse effect on the relationship between classification shifting and investment efficiency.