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Short-term overreaction, underreaction and efficient reaction: evidence from the London Stock Exchange

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  • Spyros Spyrou
  • Konstantinos Kassimatis
  • Emilios Galariotis

Abstract

We examine short-term investor reaction to extreme events in the UK equity market for the period 1989 to 2004 and find that the market reaction to shocks for large capitalization stock portfolios is consistent with the Efficient Market Hypothesis, i.e. all information appears to be incorporated in prices on the same day. However, for medium and small capitalization stock portfolios our results indicate significant underreaction to both positive and negative shocks for many days subsequent to a shock. Furthermore, the underreaction is not explained by risk factors (e.g. Fama and French, 1996) calendar effects, bid-ask biases or unique global financial crises.

Suggested Citation

  • Spyros Spyrou & Konstantinos Kassimatis & Emilios Galariotis, 2007. "Short-term overreaction, underreaction and efficient reaction: evidence from the London Stock Exchange," Applied Financial Economics, Taylor & Francis Journals, vol. 17(3), pages 221-235.
    • Handle: RePEc:taf:apfiec:v:17:y:2007:i:3:p:221-235
    DOI: 10.1080/09603100600639868
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    Cited by:

    1. Gülin Vardar & Berna Okan, 2008. "Short Term Overreaction Effect: Evidence on the Turkish Stock Market," Papers of the Annual IUE-SUNY Cortland Conference in Economics, in: Oguz Esen & Ayla Ogus (ed.), Proceedings of the Conference on Emerging Economic Issues in a Globalizing World, pages 155-165, Izmir University of Economics.
    2. Maher, Daniela & Parikh, Anokhi, 2011. "Short-term under/overreaction, anticipation or uncertainty avoidance? Evidence from India," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 21(4), pages 560-584, October.
    3. Dumitriu, Ramona & Stefanescu, Razvan & Nistor, Costel, 2012. "Reactions of the capital markets to the shocks before and during the global crisis," MPRA Paper 41540, University Library of Munich, Germany, revised 10 Jan 2012.
    4. Borgards, Oliver & Czudaj, Robert L., 2020. "The prevalence of price overreactions in the cryptocurrency market," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 65(C).
    5. Bachar FAKHRY, 2016. "A Literature Review of Behavioural Finance," Journal of Economics Library, KSP Journals, vol. 3(3), pages 458-465, September.
    6. Galariotis, Emilios C. & Holmes, Phil & Ma, Xiaodong S., 2007. "Contrarian and momentum profitability revisited: Evidence from the London Stock Exchange 1964-2005," Journal of Multinational Financial Management, Elsevier, vol. 17(5), pages 432-447, December.
    7. Senarathne Chamil W. & Long Wei, 2019. "Industry Competition and Common Stock Returns," Management Sciences. Nauki o Zarządzaniu, Sciendo, vol. 24(3), pages 24-35, September.
    8. Boubaker, Sabri & Farag, Hisham & Nguyen, Duc Khuong, 2015. "Short-term overreaction to specific events: Evidence from an emerging market," Research in International Business and Finance, Elsevier, vol. 35(C), pages 153-165.
    9. Stefanescu, Razvan & Dumitriu, Ramona & Nistor, Costel, 2012. "Overreaction and underreaction on the BUCHAREST STOCK EXCHANGE," MPRA Paper 41555, University Library of Munich, Germany, revised 25 Sep 2012.
    10. Asiya Sohail & Attiya Yasmin Javid, 2014. "The Global Financial Crisis and Investors’ Behaviour; Evidence from the Karachi Stock Exchange," PIDE-Working Papers 2014:106, Pakistan Institute of Development Economics.
    11. Hung-Wen Lin & Kun-Ben Lin & Jing-Bo Huang & Shu-Heng Chen, 2021. "Timely Loss Recognition Helps Nothing," Sustainability, MDPI, vol. 13(14), pages 1-24, July.
    12. Hudson, Robert S. & Gregoriou, Andros, 2015. "Calculating and comparing security returns is harder than you think: A comparison between logarithmic and simple returns," International Review of Financial Analysis, Elsevier, vol. 38(C), pages 151-162.
    13. Amini, Shima & Gebka, Bartosz & Hudson, Robert & Keasey, Kevin, 2013. "A review of the international literature on the short term predictability of stock prices conditional on large prior price changes: Microstructure, behavioral and risk related explanations," International Review of Financial Analysis, Elsevier, vol. 26(C), pages 1-17.
    14. Sturm, Philipp, 2013. "Operational and reputational risk in the European banking industry: The market reaction to operational risk events," Journal of Economic Behavior & Organization, Elsevier, vol. 85(C), pages 191-206.
    15. Chamil W SENARATHNE & Wei JIANGUO, 2020. "Testing for Heteroskedastic Mixture of Ordinary Least Squares Errors," Journal for Economic Forecasting, Institute for Economic Forecasting, vol. 0(2), pages 73-91, July.
    16. Razvan Stefanescu & Ramona Dumitriu, 2016. "Contrarian and Momentum Profits during Periods of High Trading Volume preceded by Stock Prices Shocks," Risk in Contemporary Economy, "Dunarea de Jos" University of Galati, Faculty of Economics and Business Administration, pages 378-384.
    17. Wasim ul Rehman & Omur Saltik & Faryal Jalil & Suleyman Degirmen, 2024. "Viral decisions: unmasking the impact of COVID-19 info and behavioral quirks on investment choices," Palgrave Communications, Palgrave Macmillan, vol. 11(1), pages 1-20, December.

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