Ambiguity Theory and Asset Pricing: Empirical Evidence from Tehran Stock Exchange

Document Type : Research Paper


1 Department of Accounting, Qazvin Branch, Islamic Azad University, Qazvin, Iran

2 Department of Accounting, Tarbiat Modares University, Tehran, Iran


Modern portfolio theory is based on the relationship between risk and return and in this paper, specific uncertainty conditions are introduced as ambiguity which affects the asset pricing. Also, the relationship between risk, ambiguity and return is examined. First, ambiguity is estimated by the means of three-variable and main component method, trading volume, ask-bid spread, error of earnings forecast and afterwards, it has been used to examine the interaction between risk, ambiguity and return. Current research method is correlative descriptive and statistical sample consisted of 120 corporates accepted in Tehran Stock Exchange during 2012-2017. To test the hypotheses, regression analysis has been utilized. Results revealed the existence of ambiguity in Tehran Stock Exchange, which affects the asset pricing negatively


Main Subjects

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Volume 3, Issue 4
December 2018
Pages 101-114
  • Receive Date: 20 November 2018
  • Revise Date: 06 January 2019
  • Accept Date: 14 January 2019
  • First Publish Date: 14 January 2019