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No Contagion, Only Interdependence: Measuring Stock Market Comovements

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  • Kristin J. Forbes

    (Sloan School of Management at the Massachusetts Institute of Technology)

  • Roberto Rigobon

    (Sloan School of Management at the Massachusetts Institute of Technology)

Abstract

Heteroskedasticity biases tests for contagion based on correlation coefficients. When contagion is defined as a significant increase in market comovement after a shock to one country, previous work suggests contagion occurred during recent crises. This paper shows that correlation coefficients are conditional on market volatility. Under certain assumptions, it is possible to adjust for this bias. Using this adjustment, there was virtually no increase in unconditional correlation coefficients (i.e., no contagion) during the 1997 Asian crisis, 1994 Mexican devaluation, and 1987 U.S. market crash. There is a high level of market comovement in all periods, however, which we call interdependence. Copyright The American Finance Association 2002.

Suggested Citation

  • Kristin J. Forbes & Roberto Rigobon, 2002. "No Contagion, Only Interdependence: Measuring Stock Market Comovements," Journal of Finance, American Finance Association, vol. 57(5), pages 2223-2261, October.
  • Handle: RePEc:bla:jfinan:v:57:y:2002:i:5:p:2223-2261
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    References listed on IDEAS

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    1. Eichengreen, Barry & Rose, Andrew K & Wyplosz, Charles, 1996. "Contagious Currency Crises," CEPR Discussion Papers 1453, C.E.P.R. Discussion Papers.
    2. Allan Drazen, 2000. "Political Contagion in Currency Crises," NBER Chapters,in: Currency Crises, pages 47-67 National Bureau of Economic Research, Inc.
    3. Gerlach, Stefan & Smets, Frank, 1995. "Contagious speculative attacks," European Journal of Political Economy, Elsevier, vol. 11(1), pages 45-63, March.
    4. King, Mervyn A & Wadhwani, Sushil, 1990. "Transmission of Volatility between Stock Markets," Review of Financial Studies, Society for Financial Studies, vol. 3(1), pages 5-33.
    5. Paul Cashin & Manmohan S. Kumar & C. John McDermott, 1995. "International Integration of Equity Markets and Contagion Effects," IMF Working Papers 95/110, International Monetary Fund.
    6. Ray Yeu-Tien Chou & Victor Ng & Lynn K. Pi, 1994. "Cointegration of International Stock Market Indices," IMF Working Papers 94/94, International Monetary Fund.
    7. Hamao, Yasushi & Masulis, Ronald W & Ng, Victor, 1990. "Correlations in Price Changes and Volatility across International Stock Markets," Review of Financial Studies, Society for Financial Studies, vol. 3(2), pages 281-307.
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    More about this item

    JEL classification:

    • F30 - International Economics - - International Finance - - - General
    • F40 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - General

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