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Risk aversion and herd behavior in financial markets

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Author Info

  • LOVO, Stefano
  • DECAMPS, Jean-Paul

    (GREMAQ-IDEI Universite de Toulouse)

Abstract

We show that differences in investors risk aversion can generate herd behavior in stock markets where assets are traded sequentially. This in turn prevents markets from being efficient in the sense that financial market prices do not converge to the asset's fundamental value. The informational efficiency of the market depends on the distribution of the risky asset across risk averse agents. These results are obtained without introducing multidimensional uncertainty.

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Bibliographic Info

Paper provided by HEC Paris in its series Les Cahiers de Recherche with number 758.

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Length: 36 pages
Date of creation: 14 May 2002
Date of revision:
Handle: RePEc:ebg:heccah:0758

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Postal: HEC Paris, 78351 Jouy-en-Josas cedex, France
Web page: http://www.hec.fr/
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Keywords: herd behavior; stock markets; efficiency;

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References

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  1. Glosten, Lawrence R. & Milgrom, Paul R., 1985. "Bid, ask and transaction prices in a specialist market with heterogeneously informed traders," Journal of Financial Economics, Elsevier, vol. 14(1), pages 71-100, March.
  2. Banerjee, Abhijit V, 1992. "A Simple Model of Herd Behavior," The Quarterly Journal of Economics, MIT Press, vol. 107(3), pages 797-817, August.
  3. Cipriani, M. & Guarino, A., 2008. "Herd behavior and contagion in financial markets," Open Access publications from University College London http://discovery.ucl.ac.u, University College London.
  4. Ho, Thomas & Stoll, Hans R., 1981. "Optimal dealer pricing under transactions and return uncertainty," Journal of Financial Economics, Elsevier, vol. 9(1), pages 47-73, March.
  5. LOVO, Stefano & DECAMPS, Jean-Paul, 2003. "Market informational inefficiency, risk aversion and quantity grid," Les Cahiers de Recherche 770, HEC Paris.
  6. Sushil Bikhchandani & David Hirshleifer & Ivo Welch, 2010. "A theory of Fads, Fashion, Custom and cultural change as informational Cascades," Levine's Working Paper Archive 1193, David K. Levine.
  7. Sunil Sharma & Sushil Bikhchandani, 2000. "herd Behavior in Financial Markets - A Review," IMF Working Papers 00/48, International Monetary Fund.
  8. Avery, Christopher & Zemsky, Peter, 1998. "Multidimensional Uncertainty and Herd Behavior in Financial Markets," American Economic Review, American Economic Association, vol. 88(4), pages 724-48, September.
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Citations

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Cited by:
  1. Décamps, Jean-Paul & Lovo, Stefano, 2003. "Market Informational Inefficiency, Risk Aversion and Quantity Grid," IDEI Working Papers 177, Institut d'Économie Industrielle (IDEI), Toulouse.
  2. Maria Grazia Romano, 2007. "Learning, Cascades, and Transaction Costs," Review of Finance, European Finance Association, vol. 11(3), pages 527-560.
  3. J L Ford, David Kelsey and W Pang, 2005. "Ambiguity in Financial Markets: Herding and Contrarian Behaviour," Discussion Papers 05-11, Department of Economics, University of Birmingham.
  4. Christophe Chamley, 2005. "Complementarities in Information Acquisition with Short-Term Trades," Boston University - Department of Economics - The Institute for Economic Development Working Papers Series dp-156, Boston University - Department of Economics.
  5. Christophe Chamley, 2005. "Complementarities in Information Acquisition with Short-Term Trades," Boston University - Department of Economics - Working Papers Series WP2005-027, Boston University - Department of Economics.

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