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Unusual Option Market Activity and the Terrorist Attacks of September 11, 2001

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  • Allen M. Poteshman

    (University of Illinois at Urbana-Champaign)

Abstract

After September 11, 2001, there was a great deal of speculation that the terrorists or their associates had traded in the option market on advanced knowledge of the impending attacks. This paper generates systematic information about option market activity that can be used to assess the option trading that precedes any event of interest. Examination of the option trading leading up to September 11 reveals that there was an unusually high level of put buying. This finding is consistent with informed investors having traded options in advance of the attacks.

Suggested Citation

  • Allen M. Poteshman, 2006. "Unusual Option Market Activity and the Terrorist Attacks of September 11, 2001," The Journal of Business, University of Chicago Press, vol. 79(4), pages 1703-1726, July.
  • Handle: RePEc:ucp:jnlbus:v:79:y:2006:i:4:p:1703-1726
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    File URL: http://dx.doi.org/10.1086/503645
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    Cited by:

    1. 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.
    2. Pei Peter Lung & Pisun Xu, 2014. "Tipping and Option Trading," Financial Management, Financial Management Association International, vol. 43(3), pages 671-701, September.
    3. Acharya, Viral V. & Johnson, Timothy C., 2010. "More insiders, more insider trading: Evidence from private-equity buyouts," Journal of Financial Economics, Elsevier, vol. 98(3), pages 500-523, December.
    4. Yang, Chih-Yuan & Jhang, Ling-Jhen & Chang, Chia-Chien, 2016. "Do investor sentiment, weather and catastrophe effects improve hedging performance? Evidence from the Taiwan options market," Pacific-Basin Finance Journal, Elsevier, vol. 37(C), pages 35-51.
    5. Bos J.W.B. & Frömmel M. & Lamers M.A.J., 2013. "FDI, terrorism and the availability heuristic for U.S. investors before and after 9/11," Research Memorandum 047, Maastricht University, Graduate School of Business and Economics (GSBE).
    6. Augustin, Patrick & Brenner, Menachem & Grass, Gunnar & Subrahmanyam, Marti G., 2016. "How do insiders trade?," CFS Working Paper Series 541, Center for Financial Studies (CFS).
    7. Hu, Jianfeng, 2014. "Does option trading convey stock price information?," Journal of Financial Economics, Elsevier, vol. 111(3), pages 625-645.
    8. Agrawal, Anup & Cooper, Tommy, 2015. "Insider trading before accounting scandals," Journal of Corporate Finance, Elsevier, vol. 34(C), pages 169-190.
    9. Chesney, Marc & Crameri, Remo & Mancini, Loriano, 2015. "Detecting abnormal trading activities in option markets," Journal of Empirical Finance, Elsevier, vol. 33(C), pages 263-275.
    10. repec:eee:corfin:v:47:y:2017:i:c:p:23-45 is not listed on IDEAS

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