IDEAS home Printed from https://ideas.repec.org/a/ucp/jnlbus/v70y1997i3p351-83.html
   My bibliography  Save this article

New Evidence on Stock Price Effects Associated with Changes in the S&P 500 Index

Author

Listed:
  • Lynch, Anthony W
  • Mendenhall, Richard R

Abstract

Since October 1989, Standard and Poor's has (when possible) announced changes in the composition of the S&P 500 index one week in advance. Because index funds hold S&P 500 stocks to minimize tracking error, index composition changes since this date provide an opportunity to examine the market reaction to an anticipated change in the demand for a stock. Using post-October 1989 data, the authors document significantly positive (negative) postannouncement abnormal returns that are only partially reversed following additions (deletions). These results indicate the existence of temporary price pressing and downward-sloping long-run demand curves for stocks and represent a violation of market efficiency. Copyright 1997 by University of Chicago Press.

Suggested Citation

  • Lynch, Anthony W & Mendenhall, Richard R, 1997. "New Evidence on Stock Price Effects Associated with Changes in the S&P 500 Index," The Journal of Business, University of Chicago Press, vol. 70(3), pages 351-383, July.
  • Handle: RePEc:ucp:jnlbus:v:70:y:1997:i:3:p:351-83
    DOI: 10.1086/209722
    as

    Download full text from publisher

    File URL: http://dx.doi.org/10.1086/209722
    File Function: full text
    Download Restriction: Access to full text is restricted to JSTOR subscribers. See http://www.jstor.org for details.

    File URL: https://libkey.io/10.1086/209722?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    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:ucp:jnlbus:v:70:y:1997:i:3:p:351-83. See general information about how to correct material in RePEc.

    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.

    We have no bibliographic references for this item. You can help adding them by using 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.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Journals Division (email available below). General contact details of provider: https://www.jstor.org/journal/jbusiness .

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

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.