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In the present study we try to examine the exchange rate changes and financial flexibility as the economic stable indexes on the financial leverage use in the companies so the main issue in this study is to define the financial leverage relation with exchange rate changes and financial flexibility. That is why 88 companies of the companies listed in Tehran stock exchange in 2005–2011. The study type is descriptive–correlative and the multivariable linear regression was used to analyze the data. The findings from the hypotheses test state there is a significant relation between financial leverage and financial flexibility while there isn't relationbetween financial leverage and exchange rate changes.

In present study by virtue of the importance of  the fiscal statement contents and illiquid items ignored by the merchant the depreciation contents relation with abnormal return of the shares and future benefits are examined in order to influence the items under consideration of the investors to take related decisions; 94 companies were selected from the accessible universe in five years (2006-2010) to have the data necessary for the study in order to achieve the goal & with the base of keeping attention to the manufacturing & nonmanufacturing companies in the whole industries of stock market except banks & insurance companies. The simple and multivariable regression statistical techniques Chow and Hausman Test were used to test the hypotheses. The significant test was conducted for the paradigms by using the ‘F’ and ‘T’ statistics. The study findings show local high inflation have affection on the both variable results & makes no relation for first variable,for future benefits shows parallel  movements.