چکیده (انگلیسی):

ABSTRACT: Systematic risk (Beta) is one of the most effective factors in predicting the appropriate required rate of
return of portfolios. Understanding systematic risk of usual portfolio of various companies, investors consider
financial investment more confidentially. The aim of this study is to determine if there is any significant relationship
between Leverages ratio (Operating leverage, financial leverage, Compound Leverage) as independent variables
and Systematic risk (Beta) as dependent variables. To do so 115 companies accepted in Tehran Stock Market were
selected based on screening (systematic deletion) in an eight-year- period between "2005-2012". The required data
were gathered from basic financial statement, committee reports, and other available documents in Tehran Stock
Market. Regression and Pearson correlation were used to analyze the data. The results of the study revealed that
there is not significant relationship between the variables. Some suggestions regarding the topic of the research are
given too.