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Rational contagion and the globalization of securities markets

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  • Calvo, Guillermo A.
  • Mendoza, Enrique G.

Abstract

This paper argues that the globalization of securities markets may promote contagion among investors by weakening incentives for gathering costly country-specific information and by strengthening incentives for imitating arbitrary market portfolios. In the presence of short-selling constraints, the utility gain of gathering information at a fixed cost converges to a constant level and may diminish as securities markets grow. Moreover, if a portfolio manager's marginal cost for yielding below-market returns exceeds the marginal gain for above-market returns, there is a range of optimal portfolios in which all investors imitate arbitrary market portfolios and this range widens as the market grows. Numerical simulations suggest that these frictions can have significant quantitative implications and they may induce large capital flows in emerging markets.
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Suggested Citation

  • Calvo, Guillermo A. & Mendoza, Enrique G., 2000. "Rational contagion and the globalization of securities markets," Journal of International Economics, Elsevier, vol. 51(1), pages 79-113, June.
  • Handle: RePEc:eee:inecon:v:51:y:2000:i:1:p:79-113
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    References listed on IDEAS

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    1. Obstfeld, Maurice, 1994. "Risk-Taking, Global Diversification, and Growth," American Economic Review, American Economic Association, vol. 84(5), pages 1310-1329, December.
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    4. Calvo, Guillermo A. & Mendoza, Enrique G., 1996. "Mexico's balance-of-payments crisis: a chronicle of a death foretold," Journal of International Economics, Elsevier, vol. 41(3-4), pages 235-264, November.
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    12. Scharfstein, David S & Stein, Jeremy C, 1990. "Herd Behavior and Investment," American Economic Review, American Economic Association, vol. 80(3), pages 465-479, June.
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    JEL classification:

    • F30 - International Economics - - International Finance - - - General
    • F34 - International Economics - - International Finance - - - International Lending and Debt Problems

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