Effect of US withdrawal from JCPOA and noise trading on return of the Tehran Stock Exchange market

As a significant source of financing resources, the stock market plays a vital role in directing savings to the productive sectors of the economy in all countries. Therefore, the study of factors affecting this market is of particular importance. The primary purpose of this paper is to investigate the effect of Noise Trading and the withdrawal of the United States from the Joint Comprehensive Plan of Action (JCPOA) on the return of the Tehran Stock Exchange Market. The sample includes 248 companies listed on the Tehran Stock Exchange selected by systematic removal method, and the data has been collected from the Rahavard365.com website and the Tehran Stock Exchange Organization website. Empirical results based on pooling data and estimate by generalized least squares (GLS) method during 2011-2018 applying for the STATA (15) software showed that United States withdrawal from JCPOA, herding behavior, and company size have a significant positive effect on the return of the Tehran Stock Exchange Market, While the noise trading has a significant negative effect on this return