IDEAS home Printed from https://ideas.repec.org/a/bla/irvfin/v26y2026i2ne70072.html

The Echo Effect of Momentum and Investor Trading Behavior

Author

Listed:
  • Cheoljun Eom
  • Jong Won Park

Abstract

This study examines the momentum echo effect using cross‐sectional momentum (CMOM) and idiosyncratic momentum (IMOM) in the Korean stock market. The results document robust evidence for CMOM‐based portfolios, while IMOM‐based portfolios exhibit contrasting evidence. Specifically, as the momentum formation period shifts from distant‐past to near‐past months, CMOM performance changes from positive to negative, while IMOM changes from negative to positive. These differences arise from contrasting trading behaviors of institutional and foreign (InsFOR) investors toward winner portfolios. For winner portfolios, InsFOR investors exhibit net buying of CMOM winners but net selling of IMOM winners. Their behavior reflects the delayed incorporation of public market information for CMOM and the underrecognition of firm‐specific information for IMOM.

Suggested Citation

  • Cheoljun Eom & Jong Won Park, 2026. "The Echo Effect of Momentum and Investor Trading Behavior," International Review of Finance, International Review of Finance Ltd., vol. 26(2), June.
    • Handle: RePEc:bla:irvfin:v:26:y:2026:i:2:n:e70072
    DOI: 10.1111/irfi.70072
    as

    Download full text from publisher

    File URL: https://doi.org/10.1111/irfi.70072
    Download Restriction: no
    File URL: https://libkey.io/10.1111/irfi.70072?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
    ---><---

    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:bla:irvfin:v:26:y:2026:i:2:n:e70072. 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: Wiley Content Delivery (email available below). General contact details of provider: http://www.blackwellpublishing.com/journal.asp?ref=1369-412X .

    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.