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Speculative Attacks with Multiple Sources of Public Information

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  • Frank Heinemann
  • Camille Cornand

Abstract

We propose a speculative attack model in which agents receive multiple public signals. It is characterised by its focus on an informational structure, which sets free from the strict separation between public information and private information. Diverse pieces of public information can be taken into account differently by players and are likely to lead to different appreciations ex post. This process defines players’ private value. The main result is to show that equilibrium uniqueness depends on two conditions: (i) signals are sufficiently dispersed (ii) private beliefs about the relative precision of these signals sufficiently differ. We derive some implications for information dissemination policy. Transparency in this context is multi-dimensional: it concerns the publicity of announcements, the number of signals disclosed as well as their precision. Especially, it seems that the central bank has better not publishing its forecast errors in order to maintain stability. An illustration to our analysis is the recent debate concerning the optimal monetary policy committee structure of central banks. Keywords: Speculative attack – coordination game – multiple equilibria – public and private information – transparency. JEL Classification: F31 – D82.

Suggested Citation

  • Frank Heinemann & Camille Cornand, 2006. "Speculative Attacks with Multiple Sources of Public Information," FMG Discussion Papers dp570, Financial Markets Group.
  • Handle: RePEc:fmg:fmgdps:dp570
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    References listed on IDEAS

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    1. Christina E. Metz, 2002. "Private and Public Information in Self-fulfilling Currency Crises," Journal of Economics, Springer, vol. 76(1), pages 65-85, May.
    2. Hellwig, Christian, 2002. "Public Information, Private Information, and the Multiplicity of Equilibria in Coordination Games," Journal of Economic Theory, Elsevier, vol. 107(2), pages 191-222, December.
    3. Aleh Tsyvinski & Arijit Mukherji & Christian Hellwig, 2006. "Self-Fulfilling Currency Crises: The Role of Interest Rates," American Economic Review, American Economic Association, vol. 96(5), pages 1769-1787, December.
    4. Heinemann, Frank & Illing, Gerhard, 2002. "Speculative attacks: unique equilibrium and transparency," Journal of International Economics, Elsevier, vol. 58(2), pages 429-450, December.
    5. 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 587-597, June.
    6. Carlsson, Hans & van Damme, Eric, 1993. "Global Games and Equilibrium Selection," Econometrica, Econometric Society, vol. 61(5), pages 989-1018, September.
    7. Stephen Morris & Hyun Song Shin, 2007. "Optimal Communication," Journal of the European Economic Association, MIT Press, vol. 5(2-3), pages 594-602, 04-05.
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    9. Iván Werning & George-Marios Angeletos, 2006. "Crises and Prices: Information Aggregation, Multiplicity, and Volatility," American Economic Review, American Economic Association, vol. 96(5), pages 1720-1736, December.
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    12. Emre Ozdenoren & Kathy Yuan, 2008. "Feedback Effects and Asset Prices," Journal of Finance, American Finance Association, vol. 63(4), pages 1939-1975, August.
    13. Axel Lindner, 2006. "Does Transparency of Central Banks Produce Multiple Equilibria on Currency Markets?," Scandinavian Journal of Economics, Wiley Blackwell, vol. 108(1), pages 1-14, March.
    14. Jack High (ed.), 2001. "Competition," Books, Edward Elgar Publishing, number 1751.
    15. Blinder, Alan S & Morgan, John, 2005. "Are Two Heads Better than One? Monetary Policy by Committee," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 37(5), pages 789-811, October.
    16. Christina E. Bannier & Frank Heinemann, 2005. "Optimal Transparency and Risk-Taking to Avoid Currency Crises," Journal of Institutional and Theoretical Economics (JITE), Mohr Siebeck, Tübingen, vol. 161(3), pages 374-374, September.
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    Cited by:

    1. Daniëls, Tijmen R. & Jager, Henk & Klaassen, Franc, 2011. "Currency crises with the threat of an interest rate defence," Journal of International Economics, Elsevier, vol. 85(1), pages 14-24, September.
    2. Jean-Pierre Allegret & Camille Cornand, 2006. "The pros and cons of higher transparency: the case of speculative attacks," Recherches économiques de Louvain, De Boeck Université, vol. 72(3), pages 215-246.
    3. repec:eee:macchp:v2-1065 is not listed on IDEAS
    4. Jean-Marc Tallon, 2006. "Incertitude stratégique et sélection d'équilibre : deux applications," Revue d'économie industrielle, De Boeck Université, vol. 0(2), pages 6-6.

    More about this item

    JEL classification:

    • F31 - International Economics - - International Finance - - - Foreign Exchange
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design

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