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Test slabé formy efektivnosti středoevropských akciových trhů
[Weak-form efficiency test in the central european capital markets]

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  • Jan Hájek

Abstract

This study thoroughly analyzes the stock market efficiency hypothesis - its weak form - in the Czech Republic, Poland and Hungary in 1995-2005. It aims to reveal whether trading on historical information about stock prices or indices may lead to economically significant abnormal profits and whether the analyzed markets are comparably efficient. It also tests relative efficiency of the Central European markets compared to developed capital markets that are considered the most effective - the American NYSE, German and Netherlands stock exchanges. Complexity of the results is enhanced by analyzing daily, weekly and monthly returns of both the major regional indices - the Czech PX-50 and PX-D, Hungarian BUX and Polish WIG20 - and individual shares that constitute the indices. Moreover, consequences of the non-synchronous trading for autocorrelations are discussed. In conclusion, the Central European region must be considered as a heterogeneous market. While the Hungarian market generally complies with the hypothesis and behaves weakly efficient, significant linear dependences are typical for the Czech stock market. Some unsystematic departures from the random walk model persist in Poland and the efficiency market hypothesis can not be validated there. Any abnormally profitable investment strategy that exploits technical analysis should thus avoid Hungarian stocks and exploit short-term dependences on the Czech and, to a lesser extant, Polish stock market.

Suggested Citation

  • Jan Hájek, 2007. "Test slabé formy efektivnosti středoevropských akciových trhů [Weak-form efficiency test in the central european capital markets]," Politická ekonomie, Prague University of Economics and Business, vol. 2007(6), pages 773-791.
    • Handle: RePEc:prg:jnlpol:v:2007:y:2007:i:6:id:623:p:773-791
    DOI: 10.18267/j.polek.623
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    References listed on IDEAS

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    1. Lo, Andrew W. & MacKinlay, A. Craig, 1989. "The size and power of the variance ratio test in finite samples : A Monte Carlo investigation," Journal of Econometrics, Elsevier, vol. 40(2), pages 203-238, February.
    2. Fama, Eugene F, 1970. "Efficient Capital Markets: A Review of Theory and Empirical Work," Journal of Finance, American Finance Association, vol. 25(2), pages 383-417, May.
    3. Andrew W. Lo, A. Craig MacKinlay, 1988. "Stock Market Prices do not Follow Random Walks: Evidence from a Simple Specification Test," The Review of Financial Studies, Society for Financial Studies, vol. 1(1), pages 41-66.
    4. Andrew C. Worthington & Helen Higgs, 2003. "Weak-form market efficiency in European emerging and developed stock markets," School of Economics and Finance Discussion Papers and Working Papers Series 159, School of Economics and Finance, Queensland University of Technology.
    5. Chun, Rodney M., 2000. "Compensation vouchers and equity markets: Evidence from Hungary," Journal of Banking & Finance, Elsevier, vol. 24(7), pages 1155-1178, July.
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    More about this item

    Keywords

    efficiency market hypothesis; relative market efficiency; random walk model; variance ratio test; heteroskedasticity; non-synchronous trading; Central European stock markets; weak-form market efficiency;
    All these keywords.

    JEL classification:

    • C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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