Intelligence Feed event · Equity · 2026-09-13

    Nike Removed From S&P 100 Index Effective September 21 Following Margins Slump

    Question

    Nike Removed From S&P 100 Index Effective September 21 Following Margins Slump

    Direct answer

    S&P Dow Jones Indices announced that Nike is being removed from the S&P 100 index effective September 21 as part of its quarterly reconstitution. The exclusion reflects prolonged weakness in operating performance, declining top-line revenues, and margin deterioration. The removal triggers mandatory portfolio reallocations across mega-cap passive tracking funds. Additionally, as the lowest-weighted constituent in the price-weighted Dow Jones Industrial Average, questions around further benchmark adjustments persist.

    Original publisher
    Market Ontology
    Evidence through
    2026-09-13
    Published
    2026-10-20
    Revision
    1 · 2026-10-20

    Cite as: Market Ontology, “Nike Removed From S&P 100 Index Effective September 21 Following Margins Slump”, revision 1, evidence through 2026-09-13. https://marketontology.com/market-events/2026-09-13/nike-removed-from-s-p-100-index-effective-september-21-following-margins-slump-4efcf8

    EQUITY
    Nike Removed From S&P 100 Index Effective September 21 Following Margins Slump
    S&P Dow Jones Indices announced that Nike is being removed from the S&P 100 index effective September 21 as part of its quarterly reconstitution. The exclusion reflects prolonged weakness in operating performance, declining top-line revenues, and margin deterioration. The removal triggers mandatory portfolio reallocations across mega-cap passive tracking funds. Additionally, as the lowest-weighted constituent in the price-weighted Dow Jones Industrial Average, questions around further benchmark adjustments persist.
    NKESPY
    Impact
    77
    SEP 13
    SIG
    90%
    NKESPY
    Nike Removed From S&P 100 Index Effective September 21 Following Margins Slump
    S&P Dow Jones Indices announced that Nike is being removed from the S&P 100 index effective September 21 as part of its quarterly reconstitution. The exclusion reflects prolonged weakness in operating performance, declining top-line revenues, and margin deterioration. The removal triggers mandatory portfolio reallocations across mega-cap passive tracking funds. Additionally, as the lowest-weighted constituent in the price-weighted Dow Jones Industrial Average, questions around further benchmark adjustments persist.
    → Index exclusion triggers forced passive fund divestment, increasing short-term selling pressure on NKE shares.
    Impact
    S&P Dow Jones Indices announced that Nike is being removed from the S&P 100 index effective September 21 as part of its quarterly reconstitution. The exclusion reflects prolonged weakness in operating performance, declining top-line revenues, and margin deterioration. The removal triggers mandatory portfolio reallocations across mega-cap passive tracking funds. Additionally, as the lowest-weighted constituent in the price-weighted Dow Jones Industrial Average, questions around further benchmark adjustments persist.
    Affected
    NKESPY
    Transmission
    Index exclusion triggers forced passive fund divestment, increasing short-term selling pressure on NKE shares.

    How this development reaches the affected companies

    AssetExposure and channelDirectionEvidence
    NKEpassive liquidation flow following S&P 100 benchmark deletionDown1-5dNike removed from S&P 100 effective September 21.
    SPYquarterly index rebalancing volume adjustmentWatch1-5dBroad index rebalancing event occurring September 21.

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    What happened next

    AssetCallBase close+1 day+5 days+20 days
    SPYWatch764.29 2026-09-11-0.45%-0.34%+1.87%

    Closing prices from stored daily bars; returns measured from the last close on or before the event date. Not a recommendation.

    No verifiable public source recorded for this card.

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