Asymmetric Effect of Return on Assets on the Profitability of Listed Firms on Tehran Stock Exchange Based on Variance Heteroscedasticity Model

Iranian Journal of Accounting, Auditing and Finance

مقاله 3، دوره 2، شماره 3، آبان 2018، صفحه 71-80   

نوع مقاله: Accounting

شناسه دیجیتال (DOI): 10.22067/ijaaf.v3i1.80372

نویسندگان

Fereshteh Salehipour^{* 1}؛ Alireza Leisi²

¹azad tabriz

²marand azad

چکیده

The primary objective of this paper is to investigate the asymmetric effect of return on assets on the profitability of Tehran’s stock market corporates based on variance inequality model. This research aims to answer questions such as how much the return on assets is effective on the profitability of companies based on Leveraging effect (symmetric or asymmetric)? The investigation is focused on all companies which are registered to Tehran’s stock market from 2014 to 2017 as a statistical population. The variance inequality model is considered equations around the mean and around the variance and accordingly based on the around the mean equation with return on assets coefficient 0.32, company growth factor 0.56, capital structure factor 0.03 and the company size logarithmic coefficient 0.07, together have the positive effect on the profitability of petrochemical companies. Also, results show that the depreciation tax shield cost with the coefficient 6.16 is having an adverse impact on those companies. Moreover, the results of the around the variance equation of asymmetric effect (leveraging effect) on the return of asset validates profitability of petrochemical companies. 

کلیدواژه‌ها

- Profitability of Companies,؛ Heteroscedasticity,؛ Return on Asset

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