Pages: 64-69

Abstract

This research aims to examine the relationship between investor sentiment and investment in Research and Development (R&D) expenditures of the listed companies in Tehran stock exchange. This investigation is a kind of library study and analytical-causative, and is performed based on Panel data analysis. In this research, finance information of 134 listed companies in Tehran stock exchange dring 2008 to 2014. According to confirming the first hypothesis, the research indicates that there is a significant and reverse relationship between investor sentiments and investment in R&D expenditure of the listed companies in Tehran stock exchange.