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Does Common Analyst Coverage Explain Excess Comovement?

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  • Israelsen, Ryan D.

Abstract

This article shows that correlated errors in news about fundamentals are an important, rational determinant of excess comovement. Individual analysts’ forecast errors tend to be correlated across stocks. Using a proxy for correlated forecast errors based on analyst coverage, I find that stocks with similar sets of analysts exhibit more excess comovement, controlling for industry and other variables. Exogenous changes in commonality in analyst coverage around i) brokerage firm mergers and ii) additions to an index lead to changes in excess comovement. This information channel explains 10% to 25% of the increase in comovement around additions to the S&P 500 index.

Suggested Citation

  • Israelsen, Ryan D., 2016. "Does Common Analyst Coverage Explain Excess Comovement?," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 51(4), pages 1193-1229, August.
    • Handle: RePEc:cup:jfinqa:v:51:y:2016:i:04:p:1193-1229_00
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    Cited by:

    1. Ananthan Nambiar & Tobias Rubel & James McCaull & Jon deVries & Mark Bedau, 2021. "Dropping diversity of products of large US firms: Models and measures," Papers 2110.08367, arXiv.org.
    2. Kumar, Alok & Rantala, Ville & Xu, Rosy, 2022. "Social learning and analyst behavior," Journal of Financial Economics, Elsevier, vol. 143(1), pages 434-461.
    3. Dasgupta, Sudipto & Banerjee, Shantanu & SHI, RUI & Yan, Jiali, 2021. "Information Complementarities and the Dynamics of Transparency Shock Spillovers," CEPR Discussion Papers 15658, C.E.P.R. Discussion Papers.
    4. Ge, S., 2020. "Text-Based Linkages and Local Risk Spillovers in the Equity Market," Cambridge Working Papers in Economics 20115, Faculty of Economics, University of Cambridge.
    5. Li, Yi & Shen, Dehua & Wang, Pengfei & Zhang, Wei, 2019. "Do analyst recommendations matter for rival companies?," International Review of Financial Analysis, Elsevier, vol. 65(C).
    6. Ali, Usman & Hirshleifer, David, 2020. "Shared analyst coverage: Unifying momentum spillover effects," Journal of Financial Economics, Elsevier, vol. 136(3), pages 649-675.
    7. Caglayan, Mustafa Onur & Hu, Yu & Xue, Wenjun, 2021. "Mutual fund herding and return comovement in Chinese equities," Pacific-Basin Finance Journal, Elsevier, vol. 68(C).
    8. Geraci, Marco Valerio & Gnabo, Jean-Yves & Veredas, David, 2023. "Common short selling and excess comovement: Evidence from a sample of LSE stocks," Journal of Financial Markets, Elsevier, vol. 65(C).
    9. Yi, Biao & Xiang, Xueman, 2023. "Pair analyst coverage and return comovement: Evidence from China," Pacific-Basin Finance Journal, Elsevier, vol. 77(C).
    10. Li, Lu & Li, Yihang & Wang, Xueding & Xiao, Tusheng & Zhu, Hongjun, 2022. "Hedge fund networks, information dissemination, and stock price comovement: Evidence from China," International Review of Financial Analysis, Elsevier, vol. 83(C).
    11. Cheema, Arbab K. & Eshraghi, Arman & Wang, Qingwei, 2023. "Macroeconomic news and price synchronicity," Journal of Empirical Finance, Elsevier, vol. 73(C), pages 390-412.
    12. Ge, Shuyi & Li, Shaoran & Linton, Oliver, 2023. "News-implied linkages and local dependency in the equity market," Journal of Econometrics, Elsevier, vol. 235(2), pages 779-815.
    13. Fu, Zheng & Ma, Yechi & Li, Suyang & Qiao, Lu, 2023. "Peer performance and the asymmetric timeliness of earnings recognition," International Review of Financial Analysis, Elsevier, vol. 85(C).
    14. Ge, S. & Li, S. & Linton, O. B. & Liu, W. & Su, W., 2024. "Should We Augment Large Covariance Matrix Estimation with Auxiliary Network Information?," Cambridge Working Papers in Economics 2427, Faculty of Economics, University of Cambridge.
    15. Ting Luo & Wenjuan Xie, 2012. "Industry information uncertainty and stock return comovement," Asia-Pacific Journal of Accounting & Economics, Taylor & Francis Journals, vol. 19(3), pages 330-351.
    16. Dragos Gorduza & Yaxuan Kong & Xiaowen Dong & Stefan Zohren, 2024. "Extracting Alpha from Financial Analyst Networks," Papers 2410.20597, arXiv.org.
    17. 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.
    18. Marcet, Francisco, 2017. "Analyst coverage network and stock return comovement in emerging markets," Emerging Markets Review, Elsevier, vol. 32(C), pages 1-27.
    19. Chen, Zilin & Guo, Li & Tu, Jun, 2021. "Media connection and return comovement," Journal of Economic Dynamics and Control, Elsevier, vol. 130(C).
    20. Ma, Rui & Marshall, Ben R. & Nguyen, Hung T. & Nguyen, Nhut H. & Visaltanachoti, Nuttawat, 2022. "Climate events and return comovement," Journal of Financial Markets, Elsevier, vol. 61(C).
    21. Zhang, Ping & Wang, Yiru, 2023. "The bright side of analyst coverage on corporate innovation: Evidence from China," International Review of Financial Analysis, Elsevier, vol. 89(C).
    22. Felipe Cortes & Francisco Marcet, 2023. "Analysts’ Connections and M&A Outcomes," Management Science, INFORMS, vol. 69(7), pages 4108-4133, July.

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