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Market reactions of African and non-African firms to changes in the S&P Africa 40 index

Author

Listed:
  • Pyemo N. Afego

    (The University of Tokyo)

  • Ernest N. Biktimirov

    (Brock University)

Abstract

We compare the market reactions of African and non-African firms that are added to or deleted from S&P Africa 40, an index of large firms with the majority of their operations on the continent. Both African and non-African additions (deletions) experience permanent stock price gains (losses) around the S&P Africa 40 index revisions. Importantly, we find significant differences in abnormal returns between African and non-African deletions, but not additions. These differences remain robust even when controlling for institutional ownership, size, leverage, profit margin, and capital expenditure variables. Contrary to the predictions of the investor awareness hypothesis, we find no significant differences in cumulative abnormal returns between new and repeated African additions, and we observe a permanent stock price decline for new African deletions.

Suggested Citation

  • Pyemo N. Afego & Ernest N. Biktimirov, 2025. "Market reactions of African and non-African firms to changes in the S&P Africa 40 index," Journal of Asset Management, Palgrave Macmillan, vol. 26(4), pages 355-376, July.
    • Handle: RePEc:pal:assmgt:v:26:y:2025:i:4:d:10.1057_s41260-024-00385-w
    DOI: 10.1057/s41260-024-00385-w
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    More about this item

    Keywords

    Emerging markets; Index tracking; S&P Africa 40; Event study; Abnormal return; Institutional ownership;
    All these keywords.

    JEL classification:

    • G11 - Financial Economics - - General Financial Markets - - - Portfolio Choice; Investment Decisions
    • 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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