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Re‐examining Cointegration, Unit Roots and Efficiency in Foreign Exchange Rates

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  • John P. Lajaunie
  • Atsuyuki Naka

Abstract

This paper examines the cointegrating relationships in seven foreign exchange rates for a sample period from 1974 to 1991 by utilizing Johansen's (1991) method. Three subperiods are also examined to confirm the intertemporal stability of the test results. In addition, subgroups of the seven exchange rates are analyzed to determine the consistency of the empirical results with respect to different dimensions in the system. We find that the test results are sensitive to the choice of test statistics, time trends, subperiods as well as subgroups. All results indicate either one or no cointegrating relationship exists. Further, we study time series properties of twenty one cross‐currency rates and the corresponding exchange rates in terms of a common currency. None of cross‐currency rates are stationary and hence the pairs of exchange rates are not cointegrated.

Suggested Citation

  • John P. Lajaunie & Atsuyuki Naka, 1997. "Re‐examining Cointegration, Unit Roots and Efficiency in Foreign Exchange Rates," Journal of Business Finance & Accounting, Wiley Blackwell, vol. 24(3), pages 363-374, April.
    • Handle: RePEc:bla:jbfnac:v:24:y:1997:i:3:p:363-374
    DOI: 10.1111/1468-5957.00109
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    Cited by:

    1. Heejoon Kang, 2004. "Inappropriate Detrending and Spurious Cointegration," Econometric Society 2004 Far Eastern Meetings 624, Econometric Society.
    2. Aroskar, Raj & Sarkar, Salil K. & Swanson, Peggy E., 2004. "European foreign exchange market efficiency: Evidence based on crisis and noncrisis periods," International Review of Financial Analysis, Elsevier, vol. 13(3), pages 333-347.
    3. Macide Cicek, 2014. "A Cointegration Test for Turkish Foreign Exchange Market Efficiency," Asian Economic and Financial Review, Asian Economic and Social Society, vol. 4(4), pages 451-471, April.
    4. Kühl, Michael, 2007. "Cointegration in the foreign exchange market and market efficiency since the introduction of the Euro: Evidence based on bivariate cointegration analyses," University of Göttingen Working Papers in Economics 68, University of Goettingen, Department of Economics.
    5. Salehizadeh, Mehdi & Taylor, Robert, 1999. "A test of purchasing power parity for emerging economies," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 9(2), pages 183-193, April.
    6. repec:got:cegedp:68 is not listed on IDEAS
    7. Kang, Heejoon, 2008. "The cointegration relationships among G-7 foreign exchange rates," International Review of Financial Analysis, Elsevier, vol. 17(3), pages 446-460, June.
    8. Chin Lee & M. Azali, 2010. "Currency Linkages Among Asean," The Singapore Economic Review (SER), World Scientific Publishing Co. Pte. Ltd., vol. 55(03), pages 459-470.
    9. Kühl, Michael, 2010. "Bivariate cointegration of major exchange rates, cross-market efficiency and the introduction of the Euro," Journal of Economics and Business, Elsevier, vol. 62(1), pages 1-19, January.

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