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Information, analysts, and stock return comovement

Author

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  • Allaudeen Hameed
  • Randall Morck
  • Jianfeng Shen
  • Bernard Yeung

Abstract

We examine information spillover as a source of stock return synchronicity, where information about highly-followed "prominent" stocks is used to price other "neglected" stocks sharing a common fundamental component. We find that stocks followed by few analysts co-move significantly with firm-specific fluctuations in the prices of highly followed stocks in the same industry, but do not observe the converse. This effect is more prominent in industries where analysts follow fewer stocks. Earnings forecast revisions for highly followed stocks cause price changes in little followed stocks, but the converse is again not observed. This is consistent with information spillover being primarily unidirectional - flowing from prominent to neglect stocks, but not vice versa. These findings also validate models of specialized information intermediaries in stock markets assisting the information capitalization process.

Suggested Citation

  • Allaudeen Hameed & Randall Morck & Jianfeng Shen & Bernard Yeung, 2010. "Information, analysts, and stock return comovement," NBER Working Papers 15833, National Bureau of Economic Research, Inc.
  • Handle: RePEc:nbr:nberwo:15833 Note: CF
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    Citations

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    Cited by:

    1. David, Joel M. & Simonovska, Ina, 2016. "Correlated beliefs, returns, and stock market volatility," Journal of International Economics, Elsevier, vol. 99(S1), pages 58-77.
    2. Filzen, Joshua J. & Schutte, Maria Gabriela, 2017. "Comovement, financial reporting complexity, and information markets: Evidence from the effect of changes in 10-Q lengths on internet search volumes and peer correlations," The North American Journal of Economics and Finance, Elsevier, vol. 39(C), pages 19-37.
    3. Bing Guo & David Pérez-Castrillo & Anna Toldrà -Simats, 2017. "Firms' Innovation Strategy under the Shadow of Analyst Coverage," CESifo Working Paper Series 6574, CESifo Group Munich.
    4. Chen, Honghui & Singal, Vijay & Whitelaw, Robert F., 2016. "Comovement revisited," Journal of Financial Economics, Elsevier, vol. 121(3), pages 624-644.
    5. Volkan Muslu & Michael Rebello & Yexiao Xu, 2014. "Sell-Side Analyst Research and Stock Comovement," Journal of Accounting Research, Wiley Blackwell, vol. 52(4), pages 911-954, September.
    6. Alexander Ljungqvist & Konrad Raff, 2017. "Busy Directors: Strategic Interaction and Monitoring Synergies," NBER Working Papers 23889, National Bureau of Economic Research, Inc.
    7. Bradley, Daniel & Yuan, Xiaojing, 2013. "Information spillovers around seasoned equity offerings," Journal of Corporate Finance, Elsevier, vol. 21(C), pages 106-118.
    8. Isshaq, Zangina & Faff, Robert, 2016. "Does the uncertainty of firm-level fundamentals help explain cross-sectional differences in liquidity commonality?," Journal of Banking & Finance, Elsevier, vol. 68(C), pages 153-161.

    More about this item

    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • G0 - Financial Economics - - General
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • M41 - Business Administration and Business Economics; Marketing; Accounting; Personnel Economics - - Accounting - - - Accounting

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