The Effect of Major Stockholders Ownership Concentration on the Firm Value in Tehran Stock Exchange

The aim of the study is to examine the effect of ownership concentration by sum of major shareholders on the firm value. The sample used for the research included ۶۹ firms listed during the years ۲۰۰۵-۲۰۰۹ in Tehran Stock exchange. The statistical method used for testing the research hypotheses was "Panel Data". To test the relationship between ownership of major stockholders and firm value, multi-linear and nonlinear regression was utilized. The findings are indicative of the existence of a significant and positive linear relationship between ownership concentration of sum of major stockholders and firm value and also of lack of nonlinear relationship between the square sum of ownership by major stockholders and firm value. The results of piecewise test of sum of major stockholders shows that there is no significant relationship between sum of major stockholders and firm value in the break points of ۱۰% and ۲۵% and ۵۰% and ۷۰%.

کلیدواژه ها:

ownership concentration ، major stockholder ، firm value Classification of JEL: G۳ ، G۳۲ ، G۳ ، تمرکز مالکیت ، سهامدار عمده ، ارزش شرکت طبقه بندی JEL: G۳۲