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Analysis of the Effects of Pre Announcement of S&P 500 Index Changes

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  • Stoyu I. Ivanov

Abstract

In this study we attempt to answer the question – does the start of pre-announcing of S&P 500 index changes in October 1989 have an effect on the trading pattern of added or deleted firms? We document that prior to October 1989 the excess returns of added or deleted firms follow a white noise process around the event, whereas after the start of pre-announcing the excess returns can be described as nonstationary. This indicates significant excess profits to be captured around the addition or deletion event after S&P started pre-announcing changes in October 1989 but not prior to that date.

Suggested Citation

  • Stoyu I. Ivanov, 2013. "Analysis of the Effects of Pre Announcement of S&P 500 Index Changes," The International Journal of Business and Finance Research, The Institute for Business and Finance Research, vol. 7(5), pages 1-10.
    • Handle: RePEc:ibf:ijbfre:v:7:y:2013:i:5:p:1-10
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    References listed on IDEAS

    as
    1. John M. Geppert & Stoyu I. Ivanov & Gordon V. Karels, 2011. "An examination of the information content of S&P 500 index changes," Review of Accounting and Finance, Emerald Group Publishing Limited, vol. 10(4), pages 411-426, November.
    2. repec:ibf:ijbfre:v:4:y:2010:i:4:p: is not listed on IDEAS
    3. Vijh, Anand M, 1994. "S&P 500 Trading Strategies and Stock Betas," The Review of Financial Studies, Society for Financial Studies, vol. 7(1), pages 215-251.
    4. Stoyu I. Ivanov, 2010. "Discretionary Deletions From The S&P 500 Index: Evidence On Forecasted And Realized Earnings," The International Journal of Business and Finance Research, The Institute for Business and Finance Research, vol. 4(4), pages 1-9.
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    Citations

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    Cited by:

    1. Wang, Chuan & Murgulov, Zoltan & Haman, Janto, 2015. "Impact of changes in the CSI 300 Index constituents," Emerging Markets Review, Elsevier, vol. 24(C), pages 13-33.
    2. Andrukovich, P., 2019. "The dynamics of stock price during their listing and delisting," Journal of the New Economic Association, New Economic Association, vol. 44(4), pages 50-76.

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    More about this item

    Keywords

    S&P 500; Discretionary Deletions; S&P 500 Changes; Excess Returns;
    All these keywords.

    JEL classification:

    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G14 - Financial Economics - - General Financial Markets - - - Information and Market Efficiency; Event Studies; Insider Trading

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