A Mind is a Terrible Thing to Change: Confirmation Bias in Financial Markets
AbstractThis paper proposes a dynamic model of financial markets where some investors are prone to the confirmation bias. Following insights from the psychological literature, these agents are assumed to amplify signals that are consistent with their prior views. In a model with public information only, this assumption provides a rationale for the volume-based price momentum documented by Lee and Swaminathan (2000). Our results are also consistent with a variety of other empirically documented phenomena such as bubbles, crashes, reversals and excess price volatility and volume. Novel empirical predictions are derived: i) return continuation should be stronger when biased traders' beliefs are more extreme, and ii) return continuation should be stronger after an increase in trading volume. The implications of our model for short-term quantitative investments are twofold: i) optimal trading strategies involve riding bubbles, and that ii) contrarian trading can be optimal in some market circumstances.
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Bibliographic InfoPaper provided by Institut d'Économie Industrielle (IDEI), Toulouse in its series IDEI Working Papers with number 720.
Date of creation: Mar 2012
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financial markets; psychological biases; confirmation bias; momentum; reversal; bubbles; trading strategies;
Other versions of this item:
- Pouget, Sébastien & Villeneuve, Stéphane, 2012. "A Mind is a Terrible Thing to Change: Confirmation Bias in Financial Markets," TSE Working Papers 12-306, Toulouse School of Economics (TSE).
- NEP-ALL-2012-05-29 (All new papers)
- NEP-CBE-2012-05-29 (Cognitive & Behavioural Economics)
- NEP-NEU-2012-05-29 (Neuroeconomics)
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.:
- De Bondt, Werner F M & Thaler, Richard, 1985. " Does the Stock Market Overreact?," Journal of Finance, American Finance Association, vol. 40(3), pages 793-805, July.
- Elyès Jouini & Clotilde Napp, 2003.
"Consensus consumer and intertemporal asset pricing with heterogeneous beliefs,"
- Ely�s Jouini & Clotilde Napp, 2007. "Consensus Consumer and Intertemporal Asset Pricing with Heterogeneous Beliefs," Review of Economic Studies, Oxford University Press, vol. 74(4), pages 1149-1174.
- Clotilde Napp & Elyès Jouini, 2007. "Consensus consumer and intertemporal asset pricing with heterogeneous beliefs," Post-Print halshs-00152348, HAL.
- Jeffrey Wurgler & Ekaterina Zhuravskaya, 2002.
"Does Arbitrage Flatten Demand Curves for Stocks?,"
The Journal of Business,
University of Chicago Press, vol. 75(4), pages 583-608, October.
- Peter Temin & Joachim Voth, 2004.
"Riding the South Sea bubble,"
Economics Working Papers
861, Department of Economics and Business, Universitat Pompeu Fabra.
- Peter Temin & Hans-Joachim Voth, 2003. "Riding the South Sea Bubble," Working Papers 91, Barcelona Graduate School of Economics.
- Temin, Peter & Voth, Hans-Joachim, 2004. "Riding the South Sea Bubble," CEPR Discussion Papers 4221, C.E.P.R. Discussion Papers.
- Peter Temin & Hans-Joachim Voth, 2004. "Riding the South See Bubble," Working Papers 213, Barcelona Graduate School of Economics.
- Fama, Eugene F & French, Kenneth R, 1988. "Permanent and Temporary Components of Stock Prices," Journal of Political Economy, University of Chicago Press, vol. 96(2), pages 246-73, April.
- Nicholas Barberis & Andrei Shleifer & Robert W. Vishny, 1997.
"A Model of Investor Sentiment,"
NBER Working Papers
5926, National Bureau of Economic Research, Inc.
- Shleifer, Andrei & Vishny, Robert W, 1997.
" The Limits of Arbitrage,"
Journal of Finance,
American Finance Association, vol. 52(1), pages 35-55, March.
- Andrei Shleifer ad Robert W. Vishny, 1995. "The Limits of Arbitrage," Harvard Institute of Economic Research Working Papers 1725, Harvard - Institute of Economic Research.
- Andrei Shleifer & Robert W. Vishny, 1995. "The Limits of Arbitrage," NBER Working Papers 5167, National Bureau of Economic Research, Inc.
- Abreu, Dilip & Brunnermeier, Markus K., 2002. "Synchronization risk and delayed arbitrage," Journal of Financial Economics, Elsevier, vol. 66(2-3), pages 341-360.
- Mankiw, N Gregory & Romer, David & Shapiro, Matthew D, 1985.
" An Unbiased Reexamination of Stock Market Volatility,"
Journal of Finance,
American Finance Association, vol. 40(3), pages 677-87, July.
- N. Gregory Mankiw & David Romer & Matthew D. Shapiro, 1985. "An Unbiased Reexamination of Stock Market Volatility," Cowles Foundation Discussion Papers 758, Cowles Foundation for Research in Economics, Yale University.
- Markus K. Brunnermeier & Stefan Nagel, 2004. "Hedge Funds and the Technology Bubble," Journal of Finance, American Finance Association, vol. 59(5), pages 2013-2040, October.
- Forsythe, Robert & Forrest Nelson & George R. Neumann & Jack Wright, 1992. "Anatomy of an Experimental Political Stock Market," American Economic Review, American Economic Association, vol. 82(5), pages 1142-61, December.
- Simon Gervais & Terrance Odean, .
"Learning To Be Overconfident,"
Rodney L. White Center for Financial Research Working Papers
5-97, Wharton School Rodney L. White Center for Financial Research.
- Simon Gervais & Terrance Odean, . "Learning To Be Overconfident," Rodney L. White Center for Financial Research Working Papers 05-97, Wharton School Rodney L. White Center for Financial Research.
- Jouini, Elyès & Napp, Clotilde, 2007. "Consensus Consumer and Intertemporal Asset Pricing with Heterogeneous Beliefs," Economics Papers from University Paris Dauphine 123456789/78, Paris Dauphine University.
- Madhavan, Ananth, 2000. "Market microstructure: A survey," Journal of Financial Markets, Elsevier, vol. 3(3), pages 205-258, August.
- LeRoy, Stephen F & Porter, Richard D, 1981. "The Present-Value Relation: Tests Based on Implied Variance Bounds," Econometrica, Econometric Society, vol. 49(3), pages 555-74, May.
Blog mentionsAs found by EconAcademics.org, the blog aggregator for Economics research:
- Weekly Roundup 186: A Curated Linkfest For The Smartest People On The Web!
by Miguel in Simoleon Sense on 2012-09-16 04:29:18
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