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Ratings-Driven Demand and Systematic Price Fluctuations

Author

Listed:
  • Itzhak Ben-David
  • Jiacui Li
  • Andrea Rossi
  • Yang Song

Abstract

We show that mutual fund ratings generate correlated demand that creates systematic price fluctuations. Mutual fund investors chase fund performance via Morningstar ratings. Until June 2002, funds pursuing the same investment style had highly correlated ratings. Therefore, rating-chasing investors directed capital into winning styles, generating style-level price pressures, which reverted over time. In June 2002, Morningstar reformed its methodology of equalizing ratings across styles. Style-level correlated demand via mutual funds immediately became muted, significantly altering the time-series and cross-sectional variation in style returns.

Suggested Citation

  • Itzhak Ben-David & Jiacui Li & Andrea Rossi & Yang Song, 2020. "Ratings-Driven Demand and Systematic Price Fluctuations," NBER Working Papers 28103, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:28103
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    Cited by:

    1. Jiacui Li, 2022. "What Drives the Size and Value Factors? [Connected stocks]," The Review of Asset Pricing Studies, Society for Financial Studies, vol. 12(4), pages 845-885.
    2. Jiang, Christine & Wang, Xianzhen, 2024. "Portfolio pumping and dumping among Chinese mutual fund companies," Journal of Banking & Finance, Elsevier, vol. 162(C).

    More about this item

    JEL classification:

    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G24 - Financial Economics - - Financial Institutions and Services - - - Investment Banking; Venture Capital; Brokerage
    • 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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