Auditor's Opinion and Market Reaction of Companies Listed on the Tehran Stock Exchange (TSE)

This research investigates the influence of auditor's opinion on stock market reaction in companies listed on the Tehran Stock Exchange (TSE). To test research hypotheses, financial information of the companies listed on the TSE during the period of 2011-2015 was used. The final research sample consisted of 125 companies that were selected after imposing desired restrictions and using systematic sampling elimination method. The present research is applied in terms of purpose and descriptive (non-experimental) in terms of the method of data collection. Collected data was analyzed using SPSS23 software. The results show that audit opinion can influence abnormal return of the company.