بررسی تأثیر راهبرد تنوع بر عملکرد شرکت‌های پذیرفته‎شده در بورس اوراق بهادار تهران به‎کمک معیار آنتروپی

نوع مقاله : مقاله علمی پژوهشی

نویسندگان

1 دانشیار گروه حسابداری، دانشکدۀ اقتصاد و حسابداری، واحد تهران مرکزی، دانشگاه آزاد اسلامی، تهران، ایران

2 کارشناس‎ارشد حسابداری، دانشکدۀ اقتصاد و حسابداری، واحد تهران مرکزی، دانشگاه آزاد اسلامی، تهران، ایران

چکیده

مدیران واحدهای تجاری طی دورۀ مدیریت، به‎دنبال یافتن راهکاری برای بهبود عملکرد واحد تجاری خودهستند. یکی از این راهکارها به‎کارگیریراهبرد تنوع است که ضمن ایجاد دامنه‌ای از فعالیت‌های تجاری برای شرکت‌ها، به بهبود عملکرد آنها نیز کمک می‎کند.پژوهش حاضر به بررسی تأثیر راهبرد تنوع بر عملکرد 87 نمونه از شرکت‌های پذیرفته‎شده در بورس اوراق بهادار تهران طی سال‌های 1392 - 1388 می‌پردازد. هدف اصلی این پژوهش بررسی رابطۀ غیرخطی بین راهبرد تنوع و سودآوری واحد تجاری با در نظر گرفتن افراز تنوع به دو بخش مرتبط و نامرتبط است. در این پژوهش برای آزمون فرضیه‌ها، مدل رگرسیون خطی چندمتغیره به‎کار گرفته شد و روش آماری آن روش داده‌های پانل است. نتایج، حاکی از وجود رابطۀ U شکل بین تنوع و سودآوری واحدهای تجاری است؛ به این معنا که سودآوری در سطوح پایین تنوع مرتبط کاهش‎یافته و در سطوح بالای تنوع مرتبط افزایش می‌یابد. همچنین سودآوری در سطوح پایین تنوع نامرتبط افزایش‎یافته و در سطوح بالای تنوع نامرتبط کاهش می‌یابد.

کلیدواژه‌ها

عنوان مقاله [English]

Effect of diversification strategy on firm performance with application of entropy measure in Tehran Stock Exchange

نویسندگان [English]

  • Farzaneh Heidarpoor 1
  • Kimia Alavi 2
1 Associate Professor, Department of Accounting, Central Tehran Branch, Islamic Azad University, Tehran, Iran
2 M.A. in Accounting, Department of Accounting, Central Tehran Branch, Islamic Azad University, Tehran, Iran
چکیده [English]

Firm managers seek a way to improve their firm performance. One way is to use diversification strategy which creates range of business activities for the firms and leads to a better performance. This study examines the effect of diversification strategy on performance of 87 companies listed on Tehran Stock Exchange from 2010 to 2014. The main objective of this study is to investigate the non-liner relationship between diversification strategy and profitability of business units by sorting it into its related and unrelated components. In this study, multivariate linear regression model is used to test the hypotheses. The statistical method is Panel Data. The results showed that there is a curve-shaped relationship between diversification and profitability of business units; that is, profitability decreases at low levels of related diversification and increases at its high levels; also profitability increases at low levels of unrelated diversification and decreases at its high levels.

کلیدواژه‌ها [English]

  • Diversification strategy
  • entropy measure
  • related diversification
  • unrelated diversification

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