IDEAS home Printed from
MyIDEAS: Log in (now much improved!) to save this article

Portfolio Effects in Conglomerate Mergers

Listed author(s):
  • OECD
Registered author(s):

    In the context of conglomerate merger review, portfolio effects seem to refer to the pro- and anti-competitive effects possibly arising when: the parties enjoy market power but not necessarily dominance; and the products joined are complementary or have analogous properties. When complementary products are merged, there is a potential for considerable synergies that could benefit buyers. There is also an increased potential for forced tying, pure bundling, or analogous practices (e.g. full line forcing) that could restrict buyer choice but also lower prices. Under certain strict conditions, consumers could gain in the short run but suffer long term harm from such practices if they eventually result in a sufficient reduction of competitors and capacity in a market. The hypothetical nature of such harm has led some to conclude that instead of prohibiting mergers having potentially harmful portfolio effects, competition agencies should instead take a wait and see attitude. That would involve using abuse of dominance or monopolisation prohibitions to control negative effects should they actually materialise.

    If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

    File URL:
    Download Restriction: Full text available to READ online. PDF download available to OECD iLibrary subscribers.

    As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.

    Article provided by OECD Publishing in its journal OECD Journal: Competition Law and Policy.

    Volume (Year): 4 (2002)
    Issue (Month): 1 ()
    Pages: 59-151

    in new window

    Handle: RePEc:oec:dafkaa:5lmqcr2k6q5c
    Contact details of provider: Postal:
    2 rue Andre Pascal, 75775 Paris Cedex 16

    Phone: 33-(0)-1-45 24 82 00
    Fax: 33-(0)-1-45 24 85 00
    Web page:

    More information through EDIRC

    No references listed on IDEAS
    You can help add them by filling out this form.

    This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

    When requesting a correction, please mention this item's handle: RePEc:oec:dafkaa:5lmqcr2k6q5c. 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: ()

    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 references are entirely missing, you can add them using this form.

    If the full references list an item that is present in RePEc, but the system did not link 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 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.

    This information is provided to you by IDEAS at the Research Division of the Federal Reserve Bank of St. Louis using RePEc data.