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The effect of institutional herding on stock prices: The differentiating role of credit ratings

Author

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  • Guo, Xu
  • Gu, Chen
  • Zebedee, Allan A.
  • Chiu, Li-ting

Abstract

This paper investigates the impact of institutional herding on stock price formation, conditional on firms’ credit ratings, using 13F data from 1986 to 2019. In line with the current literature, we find herding intensity is driven by past returns consistent with momentum trading; however, we also find that herding is more sensitive to past returns for non-investment grade (NIG) stocks than investment grade (IG) stocks, resulting in a market bifurcation. We then examine the price impact of these trades and find that herding in NIG equities enhances price discovery. One plausible explanation is that information gradually diffuses within non-investment grade stocks, and herding behavior strengthens information discovery. Finally, we show both momentum-triggered herding and non-momentum-triggered herding contribute to price discovery among non-investment grade stocks.

Suggested Citation

  • Guo, Xu & Gu, Chen & Zebedee, Allan A. & Chiu, Li-ting, 2024. "The effect of institutional herding on stock prices: The differentiating role of credit ratings," Journal of Banking & Finance, Elsevier, vol. 163(C).
    • Handle: RePEc:eee:jbfina:v:163:y:2024:i:c:s0378426624001031
    DOI: 10.1016/j.jbankfin.2024.107186
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    More about this item

    Keywords

    Institutional Investors; Herding; Credit rating;
    All these keywords.

    JEL classification:

    • G02 - Financial Economics - - General - - - Behavioral Finance: Underlying Principles
    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G20 - Financial Economics - - Financial Institutions and Services - - - General
    • G40 - Financial Economics - - Behavioral Finance - - - General

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