The Exchange Influence Systematic Risk on Stock return in Tehran stock

چکیده مقاله

The present study is aiming to determine the effect of systematic risk on efficiency of pharmaceutical products in Tehran Security Market. The methodology was descriptive and data related to research literature was gathered from library resources. We used financial statements of sample companies along with their notes, data banks and bulletins of Security Market to gather data which was analyzed by Data Panel Methodology. Our statistical universe was all companies who were accepted in Tehran Security Market. In this research, data panel consists of 27 companies having similar statistical variables, which was gathered annually during 6 years; it means that 27 companies were observed and considered for 6 years. Independent variable of this research includes systematic risk and control variable covering price to interest, size of company, book value to market value, volume of stock exchanges and dependent variable of stock efficiency. Results show that there is a positive and significant relationship among systematic risk, price to interest (P/I), size of company and stock efficiency. Also, there is a negative and significant relationship between book value to market value and volume of stock exchanges to stock efficiency

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