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

Author(s): Giancarlo Corsetti, Amil Dasgupta, Stephen Morris and Hyun Song Shin

Publication Date: November 2000

Keyword(s): Currency Crises, Herding, Large Traders, Self-Fulfilling Beliefs and Unique Equilibrium

Programme Area(s): International Macroeconomics

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 signalling, the presence of the large investor does make all other traders more aggressive in their selling. Relative to the case in which there are no large investors, small investors attack 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 signalling makes the influence of the large trader on small traders' behaviour much stronger.

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Bibliographic Reference

Corsetti, G, Dasgupta, A, Morris, S and Shin, H. 2000. 'Does One Soros Make a Difference? A Theory of Currency Crises with Large and Small Traders'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=2610