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Detecting Information from Directors' Trades: Signal Definition and Variable Size Effects

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Author Info

  • Alan Gregory

    (Department of Accounting and Finance, University of Wales, Aberystwyth,)

  • John Matatko
  • Ian Tonks

Abstract

There have been three empirical studies examining the share price reaction following trades by directors of UK companies (King and Poell, 1988; Pope, Morris and Peel, 1990; and Gregory, Matatko, Tonks and Pukiss, 1994). All three of these UK studies used different definitions of 'buy' and 'sell' signals resulting from the transactions of directors and employ different controls to detect the presence of any 'size effects'. We investigate whether the signal definition explains the different conclusions drawn by these earlier studies, and examine whether or not any observed abnormal returns are explicable by the small companies effect. We also investigate trading strategies based on holding a long portfolio of shares purchased or a short portfolio of shares sold by directors held until the end of the study period or until a 'reserving event' (e.g. a sale following a purchase by director[s] is observed). Copyright Blackwell Publishers Ltd 1997.

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Bibliographic Info

Article provided by Wiley Blackwell in its journal Journal of Business Finance & Accounting.

Volume (Year): 24 (1997-04)
Issue (Month): 3 ()
Pages: 309-342

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Handle: RePEc:bla:jbfnac:v:24:y:1997-04:i:3:p:309-342

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Web page: http://www.blackwellpublishing.com/journal.asp?ref=0306-686X

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Cited by:
  1. Bruce Burton & A. Alasdair Lonie & David Power, 2003. "Insider trading, growth opportunities and the market reaction to new financing announcements," The European Journal of Finance, Taylor & Francis Journals, vol. 9(4), pages 301-322.
  2. Michael Firth & T. Y. Leung & Oliver M. Rui, 2008. "Double Signals or Single Signal? An Investigation of Insider Trading Around Share Repurchases," Working Papers 222008, Hong Kong Institute for Monetary Research.
  3. Goergen, M. & Renneboog, L.D.R. & Zhang, C., 2008. "Do UK Institutional Shareholders Monitor Their Investee Firms?," Discussion Paper 2008-016, Tilburg University, Tilburg Law and Economic Center.
  4. Katherine Uylangco & Steve Easton & Robert Faff, 2010. "The equity and efficiency of the Australian share market with respect to director trading," Accounting Research Journal, Emerald Group Publishing, vol. 23(1), pages 5-19, July.
  5. Fidrmucova, J. & Goergen, M. & Renneboog, L.D.R., 2005. "Insider Trading, News Releases and Ownership Concentration," Discussion Paper 2005-97, Tilburg University, Center for Economic Research.
  6. Michael Firth & T. Y. Leung & Oliver M. Rui, 2009. "Insider Trading in Hong Kong: Tests of Stock Returns and Trading Frequency," Working Papers 042009, Hong Kong Institute for Monetary Research.
  7. Rose, Caspar, 2003. "Impact of investor meetings/presentations on share prices, insider trading and securities regulation," International Review of Law and Economics, Elsevier, vol. 23(3), pages 227-236, September.
  8. Cheng, Louis T.W. & Davidson III, Wallace N. & Leung, T.Y., 2011. "Insider trading returns and dividend signals," International Review of Economics & Finance, Elsevier, vol. 20(3), pages 421-429, June.
  9. Adriana Korczak & Piotr Korczak & Meziane Lasfer, 2009. "To Trade or Not to Trade: The Strategic Trading of Insiders around News Announcements," Bristol Economics Discussion Papers 09/613, Department of Economics, University of Bristol, UK.
  10. Cheng, Louis & Firth, Michael & Leung, T.Y. & Rui, Oliver, 2006. "The effects of insider trading on liquidity," Pacific-Basin Finance Journal, Elsevier, vol. 14(5), pages 467-483, November.
  11. Madura, Jeff & Marciniak, Marek, 2014. "Bidder country characteristics and informed trading in U.S. targets," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 29(C), pages 256-284.
  12. Kyriacos Kyriacou & Bryan Mase, 2006. "The Adverse Consequences of Share-Based Pay in Risky Companies," Journal of Management and Governance, Springer, vol. 10(3), pages 307-323, September.
  13. Nadia Linciano, 2003. "The Effectiveness of Insider Trading Regulation in Italy. Evidence from Stock-Price Run-Ups Around Announcements of Corporate Control Transactions," European Journal of Law and Economics, Springer, vol. 16(2), pages 199-218, September.
  14. Fidrmuc Jana P. & Goergen Marc & Renneborg Luc, 2005. "Insider Trading, News Releases and Ownership Concentration," Working Papers wpn05-03, Warwick Business School, Finance Group.
  15. Philip Hamill & Philip McIlkenny & Kwaku Opong, 2002. "Directors' Share Dealings and Company Financial Performance," Journal of Management and Governance, Springer, vol. 6(3), pages 215-234, September.

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