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Market Efficiency in Foreign Exchange Markets

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  • Gabjin Oh
  • Seunghwan Kim
  • Cheoljun Eom

Abstract

We investigate the relative market efficiency in financial market data, using the approximate entropy(ApEn) method for a quantification of randomness in time series. We used the global foreign exchange market indices for 17 countries during two periods from 1984 to 1998 and from 1999 to 2004 in order to study the efficiency of various foreign exchange markets around the market crisis. We found that on average, the ApEn values for European and North American foreign exchange markets are larger than those for African and Asian ones except Japan. We also found that the ApEn for Asian markets increase significantly after the Asian currency crisis. Our results suggest that the markets with a larger liquidity such as European and North American foreign exchange markets have a higher market efficiency than those with a smaller liquidity such as the African and Asian ones except Japan.

Suggested Citation

  • Gabjin Oh & Seunghwan Kim & Cheoljun Eom, 2006. "Market Efficiency in Foreign Exchange Markets," Papers physics/0608016, arXiv.org, revised Nov 2006.
    • Handle: RePEc:arx:papers:physics/0608016
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    Cited by:

    1. Saumitra N. Bhaduri, 2014. "Applying Approximate Entropy (ApEn) to Speculative Bubble in the Stock Market," Journal of Emerging Market Finance, Institute for Financial Management and Research, vol. 13(1), pages 43-68, April.
    2. repec:pra:mprapa:37980 is not listed on IDEAS
    3. Guglielmo Maria Caporale & Alex Plastun & Viktor Oliinyk, 2021. "The frequency of one-day abnormal returns and price fluctuations in the forex," Journal of Applied Economics, Taylor & Francis Journals, vol. 24(1), pages 401-415, January.
    4. Guneratne B Wickremasinghe & Jae H Kim, 2008. "Weak-Form Efficiency of Foreign Exchange Markets of Developing Economies," Journal of Emerging Market Finance, Institute for Financial Management and Research, vol. 7(2), pages 169-196, August.

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