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Overbidding in fixed rate tenders: The role of exposure risk

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  • Ewerhart, Christian
  • Cassola, Nuno
  • Valla, Natacha

Abstract

The fixed rate tender is one of the main procedures used by central banks in the implementation of their monetary policies. While academic research has largely dismissed the procedure owing to its tendency to encourage overbidding, central banks such as the ECB and the Bank of England have continued using it. We investigate this apparent conflict by considering an auction-theoretic setting with private information about declining marginal valuations. Since overbidding entails exposure risk, an equilibrium may exist even if bids are costless and the intended volume is pre-announced. In fact, the allotment quota may be strictly below one with certainty. Also with adaptive expectations, overbidding need not escalate. However, the resulting allocation is typically inefficient. Empirical proxies of exposure risk are significant in both euro and sterling operations. Our findings have implications, in particular, for the potential reintroduction of pro rata allotment in the main refinancing operations of the Eurosystem.

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Bibliographic Info

Article provided by Elsevier in its journal Journal of Banking & Finance.

Volume (Year): 36 (2012)
Issue (Month): 2 ()
Pages: 539-549

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Handle: RePEc:eee:jbfina:v:36:y:2012:i:2:p:539-549

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Web page: http://www.elsevier.com/locate/jbf

Related research

Keywords: Eurosystem; Bank of England; Fixed rate tender; Overbidding; Exposure risk; Existence of equilibrium; Welfare;

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References

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  1. Breitung, Jorg & Nautz, Dieter, 2001. "The empirical performance of the ECB's repo auctions: evidence from aggregated and individual bidding data," Journal of International Money and Finance, Elsevier, vol. 20(6), pages 839-856, November.
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  10. Ewerhart, Christian & Cassola, Nuno & Valla, Natacha, 2006. "Declining valuations and equilibrium bidding in central bank refinancing operations," Working Paper Series 0668, European Central Bank.
  11. Juan Ayuso & Rafael Repullo, 2001. "Why Did the Banks Overbid? An Empirical Model of the Fixed Rate Tenders of the European Central Bank," Banco de Espa�a Working Papers 0105, Banco de Espa�a.
  12. Ehrhart, Karl-Martin, 2001. "European Central Bank operations: experimental investigation of the fixed rate tender," Journal of International Money and Finance, Elsevier, vol. 20(6), pages 871-893, November.
  13. Christian Ewerhart & Nuno Cassola & Steen Ejerskov & Natacha Valla, 2009. "Optimal allotment policy in central bank open market operations," The European Journal of Finance, Taylor & Francis Journals, vol. 15(4), pages 405-420.
  14. Dieter Nautz & Jörg Oechssler, 2003. "Overbidding in Fixed Rate Tenders - An Empirical Assessment of Alternative Explanations," Bonn Econ Discussion Papers bgse10_2003, University of Bonn, Germany.
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