Univrsity Of Tehran Press Financial Research Journal 1024-8153 10 25 2008 03 20 The Effect of Diversification Strategy on the Financial Performance of the Manufacturing Companies of Tehran Securities Bourse The Effect of Diversification Strategy on the Financial Performance of the Manufacturing Companies of Tehran Securities Bourse 27743 FA Raza Thehrani Kiyana Karimi Journal Article In the recent years, the relationship between diversification and performance became an important empirical subject in financial management. Diversification strategies can affect the competitive balance of an industry. In this survey we are to illustrate the relationship between the two variables of diversification and financial ratios as performance criteria based on accounting through statistical tests. We use research based on correlation test. The results show that using diversification strategy have no effect on manufacturing companies. In the recent years, the relationship between diversification and performance became an important empirical subject in financial management. Diversification strategies can affect the competitive balance of an industry. In this survey we are to illustrate the relationship between the two variables of diversification and financial ratios as performance criteria based on accounting through statistical tests. We use research based on correlation test. The results show that using diversification strategy have no effect on manufacturing companies. https://jfr.ut.ac.ir/article_27743_a4dcbd303a3b5f5afcaad184601f66aa.pdf