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The dynamics of Stock price adjustment to fundamentals: an empirical essay via STAR models in the Tunisian stock market

Author

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  • Ramzi Boussaidi

    (Faculty of Law, Economics and Management of Jendouba, University of Jendouba, Tunisia)

  • Abaoub Ezzeddine

    (College of Administrative and Financial Studies, Taif University, Kingdom of Saudi Arabia)

Abstract

This paper examines the dynamics of stock prices adjustment to fundamental value proxied by dividend per share and earnings per share in the Tunisian stock market based on the cointegration techniques. First, the linear cointegration between stock prices and fundamental values is examined by using the Johansen's cointegration test. The empirical results indicate a linear cointegrating relationship between stock prices and dividend per share, and not between stock prices and earnings per share, in support of a linear mean reversion of stock prices towards its fundamental value proxied by dividend. To further investigate the cointegration between stock prices and earnings per share in a nonlinear context, we modelled the deviation of stock prices away from EPS by a logistic smooth transition autoregressive (LSTAR) model. Our results indicate that this model cannot capture the nonlinearity of this deviation, failing, then, to give evidence of a nonlinear cointegration between stock prices and EPS. These results suggest that when selecting stocks, Tunisian investors should focus on the underlying performance of stocks only in terms of their dividend per share.

Suggested Citation

  • Ramzi Boussaidi & Abaoub Ezzeddine, 2016. "The dynamics of Stock price adjustment to fundamentals: an empirical essay via STAR models in the Tunisian stock market," Economics Bulletin, AccessEcon, vol. 36(2), pages 813-826.
    • Handle: RePEc:ebl:ecbull:eb-15-00358
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    References listed on IDEAS

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    Cited by:

    1. Ramzi Boussaidi, 2017. "The winner-loser effect in the Tunisian stock market: A multidimensional risk-based explanation," Borsa Istanbul Review, Research and Business Development Department, Borsa Istanbul, vol. 17(3), pages 178-189, September.

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    More about this item

    Keywords

    Mean reversion; linear cointegration; nonlinear cointegration; STAR model; fundamental value; Tunis Stock Exchange;
    All these keywords.

    JEL classification:

    • G0 - Financial Economics - - General
    • G1 - Financial Economics - - General Financial Markets

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