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Efficiency of Thai stock markets: Detrended fluctuation analysis

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  • Sukpitak, Jessada
  • Hengpunya, Varagorn

Abstract

The evolution of Hurst exponent of SET index over time, as a measure of market efficiency, is examined by DFA method. It is found that, during the study period, Hurst exponent tends to decrease to the ideal value 0.5, i.e., the market becomes more efficient. This finding readily conforms to the assertion that emerging markets are becoming more efficient. Additionally, the development of Hurst exponent during November 2006 to March 2015 of SET index compared to MAI index is investigated. The result shows that the deviation of the Hurst exponent from 0.5 for the MAI index is larger than that of the SET index. This implies that SET is more efficient than MAI and thus supports the assumption that market capitalization has significant influence on market efficiency.

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  • Sukpitak, Jessada & Hengpunya, Varagorn, 2016. "Efficiency of Thai stock markets: Detrended fluctuation analysis," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 458(C), pages 204-209.
    • Handle: RePEc:eee:phsmap:v:458:y:2016:i:c:p:204-209
    DOI: 10.1016/j.physa.2016.03.076
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    9. Muhammad Usman Khurram & Kashif Hamid & Rana Shahid Imdad Akash, 2019. "Market Efficiency, Financial Integration, And Shock Transmission (Empirical Evidence From D-8 Economies)," Baltic Journal of Economic Studies, Publishing house "Baltija Publishing", vol. 5(4).
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