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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.

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Bibliographic Info

Paper provided by Financial Markets Group in its series FMG Discussion Papers with number dp570.

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Date of creation: Jun 2006
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Handle: RePEc:fmg:fmgdps:dp570

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  1. Christina E. Bannier, 2003. "Private and Public Information in Self-Fulfilling Currency Crises," International Finance 0309006, EconWPA.
  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. 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.
  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. Obstfeld, Maurice, 1996. "Models of Currency Crises with Self-fulfilling Features," CEPR Discussion Papers 1315, C.E.P.R. Discussion Papers.
  6. Morris, S & Song Shin, H, 1996. "Unique Equilibrium in a Model of Self-Fulfilling Currency Attacks," Economics Papers 126, Economics Group, Nuffield College, University of Oxford.
  7. Jutta Dönges & Frank Heinemann, 2001. "Competition for Order Flow as a Coordination Game," Working Paper Series: Finance and Accounting 64, Department of Finance, Goethe University Frankfurt am Main.
  8. Obstfeld, Maurice, 1986. "Rational and Self-fulfilling Balance-of-Payments Crises," American Economic Review, American Economic Association, vol. 76(1), pages 72-81, March.
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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," Post-Print halshs-00137469, HAL.
  3. Jean-Marc Tallon, 2006. "Incertitude stratégique et sélection d'équilibre : deux applications," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00177058, HAL.

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