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Overreaction and Portfolio Selection Strategies in the Tunisian stock market

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  • Trabelsi, Mohamed Ali

Abstract

Purpose - This article aims to present a new strategy of portfolio selection. Design/methodology/approach- After having made a comparative survey of different strategies of portfolio selection adopted by portfolio managers in Tunisia, we propose a new strategy, which we call 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 %. 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’ behaviour 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

  • Trabelsi, Mohamed Ali, 2010. "Overreaction and Portfolio Selection Strategies in the Tunisian stock market," MPRA Paper 81258, University Library of Munich, Germany, revised 2010.
    • Handle: RePEc:pra:mprapa:81258
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    References listed on IDEAS

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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

    Assets pricin; anomalies; portfolio selection; efficiency; performance; momentum strategies; overreaction.;
    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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