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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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Publisher 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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Related research
Keywords: herd behavior; stock markets; efficiency;

Find related papers by JEL classification:
G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies

This paper has been announced in the following NEP Reports:

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Sunil Sharma & Sushil Bikhchandani, 2000. "herd Behavior in Financial Markets - A Review," IMF Working Papers 00/48, International Monetary Fund.
  2. Bikhchandani, Sushil & Hirshleifer, David & Welch, Ivo, 1992. "A Theory of Fads, Fashion, Custom, and Cultural Change in Informational Cascades," Journal of Political Economy, University of Chicago Press, vol. 100(5), pages 992-1026, October. [Downloadable!] (restricted)
  3. 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. [Downloadable!] (restricted)
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  4. 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. [Downloadable!] (restricted)
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Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. 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. [Downloadable!]
  2. LOVO, Stefano & DECAMPS, Jean-Paul, 2003. "Market informational inefficiency, risk aversion and quantity grid," Les Cahiers de Recherche 770, HEC Paris. [Downloadable!]
  3. 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. [Downloadable!]
  4. Décamps, Jean-Paul & Lovo, Stefano, 2003. "Market Informational Inefficiency, Risk Aversion and Quantity Grid," IDEI Working Papers 177, Institut d'Économie Industrielle (IDEI), Toulouse. [Downloadable!]
  5. Maria Grazia Romano, 2004. "Learning, Cascades and Transaction Costs," CSEF Working Papers 123, Centre for Studies in Economics and Finance (CSEF), University of Naples, Italy. [Downloadable!]
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