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How Efficient is the Foreign Exchange Market?

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  • Ioannis N. Kallianiotis

Abstract

In this paper, we try to measure the degree of efficiency in the foreign exchange market by using four exchange rates ($/€, $/£, C$/$, and ¥/$). Different theoretical models are applied, like the random walk hypothesis, the unbiased forward rate hypothesis, the composite efficiency hypothesis, the semi-strong market efficiency, and the exchange rate expectations based on anticipated and unanticipated events ("News"). If exchange rate efficiency does not hold, a risk premium must exist and can be measured. Also, the determination of this exchange risk premium is taking place by using a GARCH (p, q) model. The empirical results for these four major exchange rates (five currencies) show that relative efficiency exists, but there are significant risk premia for some exchange rates used, here

Suggested Citation

  • Ioannis N. Kallianiotis, 2018. "How Efficient is the Foreign Exchange Market?," Athens Journal of Business & Economics, Athens Institute for Education and Research (ATINER), vol. 4(3), pages 293-326, July.
    • Handle: RePEc:ate:journl:ajbev4i3-4
    DOI: 10.30958/ajbe.4-3-4
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    References listed on IDEAS

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    1. 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.
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    3. Engle, Robert F & Lilien, David M & Robins, Russell P, 1987. "Estimating Time Varying Risk Premia in the Term Structure: The Arch-M Model," Econometrica, Econometric Society, vol. 55(2), pages 391-407, March.
    4. Frenkel, Jacob A. & Razin, Assaf, 1980. "Stochastic prices and tests of efficiency of foreign exchange markets," Economics Letters, Elsevier, vol. 6(2), pages 165-170.
    5. Giovannini, Alberto & Jorion, Philippe, 1987. "Interest rates and risk premia in the stock market and in the foreign exchange market," Journal of International Money and Finance, Elsevier, vol. 6(1), pages 107-123, March.
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    Cited by:

    1. Gregory T. Papanikos, 2022. "Greece in the Eurozone: An Evaluation of the First Two Decades," Athens Journal of Business & Economics, Athens Institute for Education and Research (ATINER), vol. 8(2), pages 177-192, April.
    2. Azzam, Islam & El-Masry, Ahmed A. & Yamani, Ehab, 2023. "Foreign exchange market efficiency during COVID-19 pandemic," International Review of Economics & Finance, Elsevier, vol. 86(C), pages 717-730.

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