IDEAS home Printed from
   My bibliography  Save this article

Abnormal Returns in Privatization Public Offerings: The case of Portuguese firms


  • Carla Vieira

    (Faculty of Economics, University of Oporto)

  • Ana Paula Serra

    (Faculty of Economics, University of Oporto)


This paper provides evidence on abnormal returns of Portuguese privatization public offerings for the period from 1989 to 2001. This study explores the abnormal performance of a comprehensive sample of Portuguese privatization transactions and investigates the determinants of the observed price behavior. We find some evidence of the underpricing phenomenon for privatized offerings but initial returns are low and barely significant. The results show further that privatization IPOs underperform private sector IPOs. In the long run, we observe negative abnormal returns. While in early event months, privatization public offerings yield more negative returns than private sector offerings, this effect is reversed in longer horizon periods. Initial underpricing is thus partially reversed and investors seem to require higher returns in partial privatizations.

Suggested Citation

  • Carla Vieira & Ana Paula Serra, 2006. "Abnormal Returns in Privatization Public Offerings: The case of Portuguese firms," Notas Económicas, Faculty of Economics, University of Coimbra, issue 23, pages 6-34, June.
  • Handle: RePEc:gmf:journl:y:2006:i:23:p:6-34

    Download full text from publisher

    File URL:
    Download Restriction: no

    Other versions of this item:

    References listed on IDEAS

    1. Paul H. Malatesta & Kathryn L. DeWenter, 2001. "State-Owned and Privately Owned Firms: An Empirical Analysis of Profitability, Leverage, and Labor Intensity," American Economic Review, American Economic Association, vol. 91(1), pages 320-334, March.
    2. Kothari, S. P. & Warner, Jerold B., 1997. "Measuring long-horizon security price performance," Journal of Financial Economics, Elsevier, vol. 43(3), pages 301-339, March.
    3. Bulent Aybar, C., 2002. "The long-term performance of privatization-related ADR issues," Emerging Markets Review, Elsevier, vol. 3(2), pages 135-164, June.
    4. William L. Megginson & Robert C. Nash & Jeffry Netter & Adam L. Schwartz, 2000. "The Long-Run Return to Investors in Share Issue Privatizations," Financial Management, Financial Management Association, vol. 29(1), Spring.
    5. Perotti, Enrico C. & van Oijen, Pieter, 2001. "Privatization, political risk and stock market development in emerging economies," Journal of International Money and Finance, Elsevier, vol. 20(1), pages 43-69, February.
    6. Bruno Biais & Enrico Perotti, 2002. "Machiavellian Privatization," American Economic Review, American Economic Association, vol. 92(1), pages 240-258, March.
    7. Perotti, Enrico C, 1995. "Credible Privatization," American Economic Review, American Economic Association, vol. 85(4), pages 847-859, September.
    8. Jeffry M. Netter & William L. Megginson, 2001. "From State to Market: A Survey of Empirical Studies on Privatization," Journal of Economic Literature, American Economic Association, vol. 39(2), pages 321-389, June.
    9. Barber, Brad M. & Lyon, John D., 1997. "Detecting long-run abnormal stock returns: The empirical power and specification of test statistics," Journal of Financial Economics, Elsevier, vol. 43(3), pages 341-372, March.
    10. Baron, David P, 1982. " A Model of the Demand for Investment Banking Advising and Distribution Services for New Issues," Journal of Finance, American Finance Association, vol. 37(4), pages 955-976, September.
    11. Ritter, Jay R, 1991. " The Long-run Performance of Initial Public Offerings," Journal of Finance, American Finance Association, vol. 46(1), pages 3-27, March.
    12. Jones, Steven L. & Megginson, William L. & Nash, Robert C. & Netter, Jeffry M., 1999. "Share issue privatizations as financial means to political and economic ends," Journal of Financial Economics, Elsevier, vol. 53(2), pages 217-253, August.
    13. Ana Paula Serra, 2002. "Event Study Tests: A brief survey," FEP Working Papers 117, Universidade do Porto, Faculdade de Economia do Porto.
    14. Anthony Boardman & Claude Laurin, 2000. "Factors affecting the stock price performance of share issued privatizations," Applied Economics, Taylor & Francis Journals, vol. 32(11), pages 1451-1464.
    15. Jenkinson, Tim & Ljungqvist, Alexander, 2001. "Going Public: The Theory and Evidence on How Companies Raise Equity Finance," OUP Catalogue, Oxford University Press, edition 2, number 9780198295990.
    Full references (including those not matched with items on IDEAS)


    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.

    Cited by:

    1. Leila Bateni & Farshid Asghari, 2014. "Study of Factors Affecting the Initial Public Offering (IPO) Price of the Shares on the Tehran Stock Exchange," Research in World Economy, Research in World Economy, Sciedu Press, vol. 5(2), pages 68-73, September.
    2. repec:spr:fininn:v:2:y:2016:i:1:d:10.1186_s40854-016-0032-y is not listed on IDEAS
    3. Haykel Hamdi & Duc Khuong Nguyen & Hassan Obeid, 2014. "The short- and long-term performance of privatization initial public offerings in Europe," Working Papers 2014-241, Department of Research, Ipag Business School.
    4. Henna Malik & Malik Muhammad Shehr Yar & Attiya Yasmin Javid, 2017. "New Issues Puzzle: Experience from Karachi Stock Exchange," Working Papers id:12182, eSocialSciences.
    5. repec:kap:iaecre:v:13:y:2007:i:1:p:65-80 is not listed on IDEAS

    More about this item

    JEL classification:

    • G38 - Financial Economics - - Corporate Finance and Governance - - - Government Policy and Regulation
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill


    Access and download statistics


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gmf:journl:y:2006:i:23:p:6-34. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Ana Seiça). General contact details of provider: .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.