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Overconfidence Bias: Explanation Of Market Anomalies French Market Case

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Author Info

  • Mouna BOUJELBENE ABBES
  • Youn�s BOUJELBENE
  • Abdelfettah BOURI
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    Abstract

    In this study, we test whether the overconfidence bias explains several stylized market anomalous, including a short-term continuation (momentum), a long-term reversal in stock returns, high levels of trading volume and excessive volatility. Using data of French stocks market, we find empirical evidence in support of overconfidence hypothesis. First, based on a restricted VAR framework, we show that overconfident investors overreact to private information and underreact to public information. Second, by performing Granger-causality tests of stock returns and trading volume, we find that overconfident investors trade more aggressively in periods subsequent to market gains. Third, based on a two GARCH specifications, we show that self attribution bias, conditioned by right forecasts, increases investors overconfidence and trading volume. Fourth, the analysis of the relation between return volatility and trading volume shows that the excessive trading of overconfident investors makes a contribution to the observed excessive volatility.

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    Bibliographic Info

    Article provided by Spiru Haret University, Faculty of Financial Management and Accounting Craiova in its journal Journal of Applied Economic Sciences.

    Volume (Year): 4 (2009)
    Issue (Month): 1(7)_ Spring 2009 ()
    Pages:

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    Handle: RePEc:ush:jaessh:v:4:y:2009:i:1(7)_spring2009:48

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    Web page: http://www2.spiruharet.ro/facultati/facultate.php?id=14
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    Related research

    Keywords: Overconfidence; Behavioural finance; Over (under) reaction; Trading volume; Volatility;

    References

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    1. Albulescu Claudiu Tiberiu, 2007. "The Impact of the New Financial Products on the Volatility of the Economic Growth," Journal of Applied Economic Sciences, Spiru Haret University, Faculty of Financial Management and Accounting Craiova, vol. 2(1(2)_Fall).
    2. Wang, Jiang & Grossman, Sanford & Campbell, John, 1993. "Trading Volume and Serial Correlation in Stock Returns," Scholarly Articles 3128710, Harvard University Department of Economics.
    3. Chuang, Wen-I & Lee, Bong-Soo, 2006. "An empirical evaluation of the overconfidence hypothesis," Journal of Banking & Finance, Elsevier, vol. 30(9), pages 2489-2515, September.
    4. Hirshleifer, David & Luo, Guo Ying, 2000. "On the Survival of Overconfident Traders in a Competitive Securities Market," MPRA Paper 15347, University Library of Munich, Germany.
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    6. Bessembinder, Hendrik & Chan, Kalok & Seguin, Paul J., 1996. "An empirical examination of information, differences of opinion, and trading activity," Journal of Financial Economics, Elsevier, vol. 40(1), pages 105-134, January.
    7. Gervais, Simon & Odean, Terrance, 2001. "Learning to be Overconfident," Review of Financial Studies, Society for Financial Studies, vol. 14(1), pages 1-27.
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    9. Terrance Odean, 1998. "Volume, Volatility, Price and Profit When All Traders Are Above Average," Finance 9803001, EconWPA.
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    11. Kyle, Albert S & Wang, F Albert, 1997. " Speculation Duopoly with Agreement to Disagree: Can Overconfidence Survive the Market Test?," Journal of Finance, American Finance Association, vol. 52(5), pages 2073-90, December.
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    13. Nelson, Daniel B, 1991. "Conditional Heteroskedasticity in Asset Returns: A New Approach," Econometrica, Econometric Society, vol. 59(2), pages 347-70, March.
    14. Karpoff, Jonathan M., 1987. "The Relation between Price Changes and Trading Volume: A Survey," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 22(01), pages 109-126, March.
    15. Wang, F. Albert, 2001. "Overconfidence, Investor Sentiment, and Evolution," Journal of Financial Intermediation, Elsevier, vol. 10(2), pages 138-170, April.
    16. Lamoureux, Christopher G & Lastrapes, William D, 1990. " Heteroskedasticity in Stock Return Data: Volume versus GARCH Effects," Journal of Finance, American Finance Association, vol. 45(1), pages 221-29, March.
    17. Kent D. Daniel, 2001. "Overconfidence, Arbitrage, and Equilibrium Asset Pricing," Journal of Finance, American Finance Association, vol. 56(3), pages 921-965, 06.
    18. Kent Daniel & David Hirshleifer & Avanidhar Subrahmanyam, 1998. "Investor Psychology and Security Market Under- and Overreactions," Journal of Finance, American Finance Association, vol. 53(6), pages 1839-1885, December.
    19. Benos, Alexandros V., 1998. "Aggressiveness and survival of overconfident traders," Journal of Financial Markets, Elsevier, vol. 1(3-4), pages 353-383, September.
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