The Study of the Effect of Diversification Strategy, Cost Leadership Strategies and Product Differentiation on Business Unit Value

This study aimed to investigate the effect of diversification strategy, cost leadership strategies and product differentiation on business unit value that the statistical sample is consisted of 104 companies listed on the tehran stock exchange during the years 2010-2014 that have been selected using systematic elimination method that totally were 520 years-firm. this study in terms of the objective is practical. in terms of type of research design because of relying on historical data, is postevent and its inference method is inductive and in correlation type. this study includes six main hypotheses. in this study to assess the hypotheses, the linear regression has been used. to analyze the data and test hypotheses, eviews software is used. according to the regression results, the company’s cost leadership strategy has a significant and positive effect on company’s value as well as attractiveness of the industry has an impact on the effectiveness intensity of the company’s cost leadership strategy, and the company's diversification strategy also has an impact on the company’s values and the results suggest the ineffectiveness of diversification strategy and product differentiation strategy on the company’s value and also ineffectiveness of attractiveness of the industry on the effectiveness intensity of product differentiation strategy on the company’s value.