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Bulls, Bears and Excess Volatility: can currency intervention help?

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  • Corrado, L.
  • Miller, M.
  • Zhang, L.

Abstract

Asset mis-pricing may reflect investor psychology, with excess volatility arising from switches of sentiment. For a floating exchange rate where fundamentals follow a random walk, we show that excess volatility can be generated by the repeated entry and exit of currency `bulls' and `bears' with switches driven by `draw-down' trading rules. We argue that non-sterilised intervention - in support of `monitoring band' - can reduce excess volatility by coordinating beliefs in line with policy. Strategic complementarity in the foreign exchange market suggests that sterilised intervention may also play a coordinating role.

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File URL: http://www.econ.cam.ac.uk/research/repec/cam/pdf/cwpe0708.pdf
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Bibliographic Info

Paper provided by Faculty of Economics, University of Cambridge in its series Cambridge Working Papers in Economics with number 0708.

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Length: 29
Date of creation: Jan 2007
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Handle: RePEc:cam:camdae:0708

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Keywords: Monitoring Rules; Monitoring Band; Bear and Bull Traders; Excess Volatility; Central Bank Intervention.;

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References

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  9. Corrado, Luisa & Miller, Marcus & Zhang, Lei, 2002. "Exchange Rate Monitoring Bands: Theory and Policy," CEPR Discussion Papers 3337, C.E.P.R. Discussion Papers.
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Citations

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Cited by:
  1. Liu, Yi-Fang & Zhang, Wei & Xu, Chao & Vitting Andersen, Jørgen & Xu, Hai-Chuan, 2014. "Impact of information cost and switching of trading strategies in an artificial stock market," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 407(C), pages 204-215.
  2. Yi-Fang Liu & Wei Zhang & Chao Xu & J{\o}rgen Vitting Andersen & Hai-Chuan Xu, 2013. "Impact of information cost and switching of trading strategies in an artificial stock market," Papers 1311.4274, arXiv.org, revised Jul 2014.
  3. Michael Melvin & Lukas Menkhoff & Maik Schmeling, 2008. "Automating Exchange Rate Target Zones: Intervention via an Electronic Limit Order Book," CESifo Working Paper Series 2221, CESifo Group Munich.
  4. Paul De Grauwe & Pablo Rovira Kaltwasser, 2007. "Modeling Optimism and Pessimism in the Foreign Exchange Market," CESifo Working Paper Series 1962, CESifo Group Munich.
  5. Yi-Fang Liu & Wei Zhang & Chao Xu & Jørgen Vitting Andersen & Hai-Chuan Xu, 2014. "Impact of information cost and switching of trading strategies in an artificial stock market," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00983051, HAL.
  6. Yi-Fang Liu & Wei Zhang & Chao Xu & Jørgen Vitting Andersen & Hai-Chuan Xu, 2014. "Impact of information cost and switching of trading strategies in an artificial stock market," Documents de travail du Centre d'Economie de la Sorbonne 14031, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.

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