Akbar Kanani; Seyyed Jaber Mirniya
Volume 1, Issue 3 , July 2012, , Pages 186-200
Abstract
The size of a company shows different perspectives of it in several studies. The present research is going to study the effect of the sizes of firms accepted in Tehran Stock Exchange on their operating performances. Our statistical sample includes 66 firms during the time period between 2006 and 2010. ...
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The size of a company shows different perspectives of it in several studies. The present research is going to study the effect of the sizes of firms accepted in Tehran Stock Exchange on their operating performances. Our statistical sample includes 66 firms during the time period between 2006 and 2010. The statistical method used in this research includes the independent t test and a bidirectional variance analysis method. The findings of the research show that the size of the firms affects criteria such as ROA, ROE, REVA, MVA, P/E, M/B, and Q statistically and it does not affect criteria such as EPS, ROI, RI, and EVA. Also regarding EPS and EVA, we can say that firms with big sizes affect these criteria the most and small firms have the least effects on ROI and RI criteria. Also in studying the simultaneous effects of the type of the industry and the sizes of firms on operating performances of them each of operating performance approaches (accounting, financial, value added and integrative approaches) is affected by the industry agent.
Oktay Yamrali; Mohammad Reza Aboujafari; Ali Aliyani Nezhad; Somayeh Ghochzadeh
Volume 1, Issue 2 , March 2012, , Pages 100-109
Abstract
The purpose of this study is the investigation of variations in equity returns of shares holders and firm size on abnormal return created in IPO. For this case, the firms which entered to Tehran Stock Exchange from 1999 to 2011 were investigated by means of regression analysis. Therefore, 92 firms were ...
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The purpose of this study is the investigation of variations in equity returns of shares holders and firm size on abnormal return created in IPO. For this case, the firms which entered to Tehran Stock Exchange from 1999 to 2011 were investigated by means of regression analysis. Therefore, 92 firms were selected randomly by removal method. The results show that there is a meaningful relationship between equity return of stock holders and abnormal return in IPO and there was no meaningful relationship between firm size and abnormal return in IPO.