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Does One Soros Make a Difference? A Theory of Currency Crises with Large and Small Traders

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  • Hyun Song Shin

    ()

  • Giancarlo Corsetti
  • Amil Dasgupta
  • Stephen Morris

Abstract

Do large investors increase the vulnerability of a country to speculative attacks in the foreign exchange markets? To address this issue, we build a model of currency crises where a single large investor and a continuum of small investors independently decide whether to attack a currency based on their private information about fundamentals. Even abstracting from signaling, the presence of the large investor does make all other traders more aggressive in their selling. Relative to the case in which there is no large investors, small investors attach the currency when fundamentals are stronger. Yet, the difference can be small, or null, depending on the relative precision of private information of the small and large investors. Adding signaling makes the influence of the large trader on small traders behaviour much stronger.

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Bibliographic Info

Paper provided by Financial Markets Group in its series FMG Discussion Papers with number dp372.

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Date of creation: Mar 2001
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Handle: RePEc:fmg:fmgdps:dp372

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  1. Carlsson, H. & Damme, E.E.C. van, 1990. "Global games and equilibrium selection," Discussion Paper 1990-52, Tilburg University, Center for Economic Research.
  2. Maurice Obstfeld, 1995. "Models of Currency Crises with Self-Fulfilling Features," NBER Working Papers 5285, National Bureau of Economic Research, Inc.
  3. Douglas W. Diamond & Philip H. Dybvig, 2000. "Bank runs, deposit insurance, and liquidity," Quarterly Review, Federal Reserve Bank of Minneapolis, issue Win, pages 14-23.
  4. David K. Levine & Wolfgang Pesendorfer, 1995. "When Are Agents Negligible?," Levine's Working Paper Archive 96, David K. Levine.
  5. Frankel, David M. & Morris, Stephen & Pauzner, Ady, 2003. "Equilibrium Selection in Global Games with Strategic Complementarities," Staff General Research Papers 11920, Iowa State University, Department of Economics.
  6. Stephen Morris & Hyun Song Shin, 2000. "Global Games: Theory and Applications," Cowles Foundation Discussion Papers 1275R, Cowles Foundation for Research in Economics, Yale University, revised Aug 2001.
  7. Morris, Stephen & Shin, Hyun Song, 1998. "Unique Equilibrium in a Model of Self-Fulfilling Currency Attacks," American Economic Review, American Economic Association, vol. 88(3), pages 587-97, June.
  8. Giancarlo Corsetti & Paolo Pesenti & Nouriel Roubini, 1998. "What Caused the Asian Currency and Financial Crisis? Part I: A Macroeconomic Overview," NBER Working Papers 6833, National Bureau of Economic Research, Inc.
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