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Media connection and return comovement

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  • Chen, Zilin
  • Guo, Li
  • Tu, Jun

Abstract

Media news may cover multiple firms in one article, which establishes a media connection across firms. We propose a media connection strength (MCS) measure between two given firms, which is defined as the number of news articles co-mentioning these two firms. We show that the MCS measure can significantly explain and forecast return comovement of media-connected firm-pairs. Further analyses show that our results are robust to various alternative explanations. We argue that the MCS measure can capture comprehensive and complex correlated fundamental information among media-connected firms and hence may provide a new mechanism for return comovement beyond the existing rational- and behavioral-based explanations.

Suggested Citation

  • Chen, Zilin & Guo, Li & Tu, Jun, 2021. "Media connection and return comovement," Journal of Economic Dynamics and Control, Elsevier, vol. 130(C).
    • Handle: RePEc:eee:dyncon:v:130:y:2021:i:c:s0165188921001263
    DOI: 10.1016/j.jedc.2021.104191
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    1. Do, Hung X. & Nguyen, Nhut H. & Nguyen, Quan M.P. & Truong, Cameron, 2023. "Aerospace competition, investor attention, and stock return comovement," Journal of Economic Behavior & Organization, Elsevier, vol. 215(C), pages 40-59.
    2. Hu, Junjie & Härdle, Wolfgang, 2021. "Networks of news and cross-sectional returns," IRTG 1792 Discussion Papers 2021-023, Humboldt University of Berlin, International Research Training Group 1792 "High Dimensional Nonstationary Time Series".

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    More about this item

    Keywords

    News linkages; Fundamental comovement; Return comovement; Journalists collective opinions; Complex economic linkages;
    All these keywords.

    JEL classification:

    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G41 - Financial Economics - - Behavioral Finance - - - Role and Effects of Psychological, Emotional, Social, and Cognitive Factors on Decision Making in Financial Markets

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