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September 11 and Stock Return Expectations of Individual Investors

Author

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  • Glaser, Markus

    () (Sonderforschungsbereich 504)

  • Weber, Martin

    () (Lehrstuhl für ABWL, Finanzwirtschaft, insb. Bankbetriebslehre)

Abstract

This study offers the unique opportunity to analyze how an unprecedented crisis such as the September 11 tragedy influences expected returns and volatility forecasts of individual investors. Via e-mail, we asked a randomly selected group of individual investors with accounts at a German online broker to answer an internet questionnaire at the beginning of August, 2001. A second e-mail to the investors who have not yet answered, scheduled five weeks later, was postponed due to the terror attacks until September 20, which was exactly the day with the lowest share prices in Germany in the year 2001. Based on the answers to questions concerning stock market predictions, we find that return forecasts of the investors in our sample are significantly higher after September 11. The actual returns from the respective time of response until the end of the year 2001 are overestimated in both groups. The second group of investors states return forecasts that are approximately twice as high as the true realized returns. After the terror attacks, volatility forecasts are higher than before September 11. In two out of four cases, historical volatilities are overestimated. Therefore, investors are not generally overconfident in the way that they underestimate the variance of stock returns. Differences of opinion with regard to return forecasts are lower after the terror attacks whereas differences of opinion concerning volatility forecasts are mainly unaffected. Furthermore, differences of opinion are generally higher with regard to return (point) forecasts when compared to differences of opinion with regard volatility forecasts.

Suggested Citation

  • Glaser, Markus & Weber, Martin, 2003. "September 11 and Stock Return Expectations of Individual Investors," Sonderforschungsbereich 504 Publications 03-17, Sonderforschungsbereich 504, Universität Mannheim;Sonderforschungsbereich 504, University of Mannheim.
  • Handle: RePEc:xrs:sfbmaa:03-17
    Note: Financial support from the Deutsche Forschungsgemeinschaft, SFB 504, at the University of Mannheim, is gratefully acknowledged.
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    References listed on IDEAS

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    1. Glaser, Markus, 2003. "Online broker investors : demographic information, investment strategy, portfolio positions, and trading activity," Papers 03-18, Sonderforschungsbreich 504.
    2. S. T. M. Straetmans & W. F. C. Verschoor & C. C. P. Wolff, 2008. "Extreme US stock market fluctuations in the wake of 9|11," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 23(1), pages 17-42.
    3. Davidson, Russell & MacKinnon, James G., 1993. "Estimation and Inference in Econometrics," OUP Catalogue, Oxford University Press, number 9780195060119.
    4. Spanos,Aris, 1986. "Statistical Foundations of Econometric Modelling," Cambridge Books, Cambridge University Press, number 9780521269124.
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    Cited by:

    1. Zaleskiewicz, Tomasz, 2011. "Financial forecasts during the crisis: Were experts more accurate than laypeople?," Journal of Economic Psychology, Elsevier, vol. 32(3), pages 384-390, June.
    2. Glaser, Markus & Weber, Martin, 2007. "Why inexperienced investors do not learn: They do not know their past portfolio performance," Finance Research Letters, Elsevier, vol. 4(4), pages 203-216, December.
    3. repec:bla:acctfi:v:57:y:2017:i:3:p:759-788 is not listed on IDEAS
    4. Egan, Daniel & Merkle, Christoph & Weber, Martin, 2014. "Second-order beliefs and the individual investor," Journal of Economic Behavior & Organization, Elsevier, vol. 107(PB), pages 652-666.
    5. Hoffmann, Arvid O.I. & Post, Thomas & Pennings, Joost M.E., 2013. "Individual investor perceptions and behavior during the financial crisis," Journal of Banking & Finance, Elsevier, vol. 37(1), pages 60-74.
    6. Kallberg, Jarl & Liu, Crocker H. & Pasquariello, Paolo, 2008. "Updating expectations: An analysis of post-9/11 returns," Journal of Financial Markets, Elsevier, vol. 11(4), pages 400-432, November.
    7. Merkle, Christoph & Weber, Martin, 2014. "Do investors put their money where their mouth is? Stock market expectations and investing behavior," Journal of Banking & Finance, Elsevier, vol. 46(C), pages 372-386.
    8. Billmeier, Andreas & Massa, Isabella, 2008. "Go long or short in pyramids? News from the Egyptian stock market," International Review of Financial Analysis, Elsevier, vol. 17(5), pages 949-970, December.

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