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Overreaction and portfolio‐selection strategies in the Tunisian stock market

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  • Mohamed Ali Trabelsi

Abstract

Purpose - The purpose of this paper is to present a new strategy of portfolio selection. Design/methodology/approach - After making a comparative survey of different strategies of portfolio selection adopted by portfolio managers in Tunisia, the paper proposes a new strategy, which it calls weighted overreaction strategy. This strategy consists in over‐weighting the stocks having bad performances in the past. Findings - The new proposed strategy turned out to be more performing than size, PER, and overreaction strategies in the Tunisian stock market via a mean equality test. Those who adopt it should create a loser portfolio and should sell it at a later period (12 months) and generate average annual returns of 241.75 percent. Research limitations/implications - This result deserves generalization to other stock markets. As the Tunisian stock market is marked by its looseness and low capitalization, applying this strategy over similar or more developed market would open the way for research aiming to define other strategies and to select the best one for each market. Indeed, it should investigate investors' behavior, which is certainly not the same in each stock market and outline the specific strategy for each market. Practical implications - The weighted overreaction strategy generated a considerable gain compared to other portfolios. Originality/value - The new proposed strategy turned out to be more performing than the other ones.

Suggested Citation

  • Mohamed Ali Trabelsi, 2010. "Overreaction and portfolio‐selection strategies in the Tunisian stock market," Journal of Risk Finance, Emerald Group Publishing Limited, vol. 11(3), pages 310-322, May.
    • Handle: RePEc:eme:jrfpps:15265941011043675
    DOI: 10.1108/15265941011043675
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    References listed on IDEAS

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    1. Sadka, Ronnie, 2006. "Momentum and post-earnings-announcement drift anomalies: The role of liquidity risk," Journal of Financial Economics, Elsevier, vol. 80(2), pages 309-349, May.
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    4. Trabelsi, Mohamed Ali, 2008. "Sur-réaction sur le marché tunisien des actions : une investigation empirique [Overreaction on the Tunisian stock market: an empirical test]," MPRA Paper 76925, University Library of Munich, Germany.
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    9. Doron Avramov & Tarun Chordia, 2006. "Asset Pricing Models and Financial Market Anomalies," The Review of Financial Studies, Society for Financial Studies, vol. 19(3), pages 1001-1040.
    10. De Bondt, Werner F M & Thaler, Richard H, 1987. "Further Evidence on Investor Overreaction and Stock Market Seasonalit y," Journal of Finance, American Finance Association, vol. 42(3), pages 557-581, July.
    11. Gaunt, Clive, 2000. "Overreaction in the Australian equity market: 1974-1997," Pacific-Basin Finance Journal, Elsevier, vol. 8(3-4), pages 375-398, July.
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    Cited by:

    1. Olfa Chaouachi & Fatma Wy?me Ben Mrad Douagi, 2014. "Overreaction Effect in the Tunisian Stock Market," Journal of Asian Business Strategy, Asian Economic and Social Society, vol. 4(11), pages 134-140, November.
    2. Akhter Mohiuddin Rather, 2012. "Portfolio selection using mean-risk model and mean-risk diversification model," International Journal of Operational Research, Inderscience Enterprises Ltd, vol. 14(3), pages 324-342.

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    More about this item

    Keywords

    Portfolio investment; Tunisia; Stock markets; Assets valuation; Pricing;
    All these keywords.

    JEL classification:

    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G19 - Financial Economics - - General Financial Markets - - - Other

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