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Sell‐Side Analyst Research and Stock Comovement

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  • VOLKAN MUSLU
  • MICHAEL REBELLO
  • YEXIAO XU

Abstract

We document that a stock's price around a recommendation or forecast covaries with prices of other stocks the issuing analyst covers. The effect of shared analyst coverage on stock price comovement extends beyond analyst activity days. A stock's daily returns covary with the returns of other stocks with which it shares analyst coverage. These links between stock price comovement and shared analyst coverage are consistent with the coverage‐specific information we find in earnings forecasts; analysts who cover both stocks in a pair expect future earnings of the stocks to be more highly correlated than do analysts who cover only one stock from the pair. Collectively, our evidence indicates that analyst research produces coverage‐specific spillovers that raise price comovement among stocks that share analyst coverage. The strength of these spillovers is comparable to spillovers from broad industry and market information in analyst research.

Suggested Citation

  • 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.
  • Handle: RePEc:bla:joares:v:52:y:2014:i:4:p:911-954
    DOI: 10.1111/1475-679X.12057
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    3. Anna Scherbina & Bernd Schlusche, 2016. "Economic linkages inferred from news stories and the predictability of stock returns," AEI Economics Working Papers 873600, American Enterprise Institute.
    4. Marcet, Francisco, 2017. "Analyst coverage network and stock return comovement in emerging markets," Emerging Markets Review, Elsevier, vol. 32(C), pages 1-27.
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    7. Box, Travis, 2018. "Qualitative similarity and stock price comovement," Journal of Banking & Finance, Elsevier, vol. 91(C), pages 49-69.
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    12. 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).
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    16. Michael S. Drake & Jared Jennings & Darren T. Roulstone & Jacob R. Thornock, 2017. "The Comovement of Investor Attention," Management Science, INFORMS, vol. 63(9), pages 2847-2867, September.
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    18. Ali, Usman & Hirshleifer, David, 2020. "Shared analyst coverage: Unifying momentum spillover effects," Journal of Financial Economics, Elsevier, vol. 136(3), pages 649-675.
    19. Felipe Cortes & Francisco Marcet, 2023. "Analysts’ Connections and M&A Outcomes," Management Science, INFORMS, vol. 69(7), pages 4108-4133, July.
    20. Yi Dong & Nan Hu & Xu Li & Ling Liu, 2017. "Analyst Firm Coverage and Forecast Accuracy: The Effect of Regulation Fair Disclosure," Abacus, Accounting Foundation, University of Sydney, vol. 53(4), pages 450-484, December.
    21. Chen, Zhang-HangJian & Wu, Wang-Long & Li, Sai-Ping & Bao, Kun & Koedijk, Kees G., 2024. "Social media information diffusion and excess stock returns co-movement," International Review of Financial Analysis, Elsevier, vol. 91(C).
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