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Does Joining the S&P 500 Index Hurt Firms?

Author

Listed:
  • Bennett, Benjamin

    (Tulane U)

  • Stulz, Rene M.

    (Ohio State U and European Corporate Governance Institute)

  • Wang, Zexi

    (Lancaster U)

Abstract

We investigate the impact on firms of joining the S&P 500 index from 1997 to 2017. We find that the positive announcement effect on the stock price of index inclusion has disappeared and the long-run impact of index inclusion has become negative. Inclusion worsens stock price informativeness and some aspects of governance. Compensation, investment, and financial policies change with index inclusion. For instance, payout policies of firms joining the index become more similar to the policies of their index peers. ROA falls following inclusion. There is no evidence of an impact of inclusion on competition.

Suggested Citation

  • Bennett, Benjamin & Stulz, Rene M. & Wang, Zexi, 2020. "Does Joining the S&P 500 Index Hurt Firms?," Working Paper Series 2020-17, Ohio State University, Charles A. Dice Center for Research in Financial Economics.
    • Handle: RePEc:ecl:ohidic:2020-17
    as

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    Citations

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    Cited by:

    1. Dasgupta, Amil & Fos, Vyacheslav & Sautner, Zacharias, 2021. "Institutional investors and corporate governance," LSE Research Online Documents on Economics 112114, London School of Economics and Political Science, LSE Library.
    2. Jerry Coakley & George Dotsis & Apostolos Kourtis & Dimitris Psychoyios, 2024. "The S&P 500 index inclusion effect: Evidence from the options market," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 29(1), pages 1157-1171, January.
    3. Chu, Gang & Goodell, John W. & Li, Xiao & Zhang, Yongjie, 2021. "Long-term impacts of index reconstitutions: Evidence from the CSI 300 additions and deletions," Pacific-Basin Finance Journal, Elsevier, vol. 69(C).
    4. Duffy, John & Friedman, Dan & Rabanal, Jean Paul & Rud, Olga, 2022. "The impact of ETF index inclusion on stock prices," UiS Working Papers in Economics and Finance 2022/2, University of Stavanger.

    More about this item

    JEL classification:

    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading
    • G23 - Financial Economics - - Financial Institutions and Services - - - Non-bank Financial Institutions; Financial Instruments; Institutional Investors
    • G31 - Financial Economics - - Corporate Finance and Governance - - - Capital Budgeting; Fixed Investment and Inventory Studies
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill
    • G35 - Financial Economics - - Corporate Finance and Governance - - - Payout Policy

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