The Effect of Block Holders and earning variation on earning smoothing in listed companies at Tehran Stock Exchange

The purpose of the study is investigating the impact of Block holders and earning variation on earning smoothing in Tehran''s Stock Exchange. In the present study، the pool data from 108 companies analyzed by consolidated regression system for years between 2004-2008. The first hypothesis analyses earning variation compare to last year and earning smoothing. The result of the first hypothesis show that if the company''s earning decrease (increase)، the company smooth down (or up) the earning by the use of accrual items. The second one analyses the role of block holders in earning smoothing. The result of testing the second hypothesis imply that the present of block holders has no significant effect on earning smoothing process.