Nike Removed from S&P 100 Index Effective September 21 Rebalancing
Resolved · market structure · Occurred · Assessed · 1 sources
This assessment is dated 2026-09-14. Check what remains unresolved below before relying on it.
What changed relative to expectations?
De-indexing from the S&P 100 forces mandatory equity divestment from passive index-tracking funds, creating direct net order imbalances into the September 21 close.
| Question | What the evidence establishes |
|---|---|
| What was reported? | Reported factNike is being removed from the S&P 100 index effective September 21, 2026, during quarterly rebalancing. |
| What else was confirmed? | Reported factNike stock has traded at 12-year lows following revenue declines and operating margin contraction. |
| Does the valuation support acting? | Interpretation4 stored valuation assumptions for NKE; the latest is dated 2026-09-29. |
| What would change the assessment? | UnknownS&P index rebalancing closing auction flows — Market-on-close volume imbalances on September 21 rebalance date. |
What would this event cost your holdings?
Apply your own hypothetical returns to current holding values. The calculator does not infer security effects from this event.
Test this event against my holdingsReported facts
- · Nike is being removed from the S&P 100 index effective September 21, 2026, during quarterly rebalancing.
- · Nike stock has traded at 12-year lows following revenue declines and operating margin contraction.
- · Nike is currently the lowest-ranked component in the Dow Jones Industrial Average.
Public research record
Research framework · page evidenceCompleted event assessment
passive institutional outflow via benchmark index deletion
| Type | Claim | Scope |
|---|---|---|
| Assumption | Nike is being removed from the S&P 100 index effective September 21, 2026, during quarterly rebalancing. | 2026-09-14 |
| Interpretation | passive institutional outflow via benchmark index deletion | NKE |
Countercase, invalidators, and sources
Turnaround plan catalysts or short covering stabilize price ahead of index implementation.
- · S&P index rebalancing closing auction flows — Market-on-close volume imbalances on September 21 rebalance date.
- Nike Is Being Deleted From the S&P 100. Is Its Seat in the Dow Jones Industrial Average in Jeopardy? · 2026-09-12
What remains unresolved
- Base path
- Passive selling creates persistent downside volume pressure into the September 21 effective date.
- Adverse path
- Index deletion sparks broader institutional derisking and speculative scrutiny over Dow status.
- Supportive path
- Turnaround plan catalysts or short covering stabilize price ahead of index implementation.
- · S&P index rebalancing closing auction flows — Market-on-close volume imbalances on September 21 rebalance date.this week
Evidence
- Nike Is Being Deleted From the S&P 100. Is Its Seat in the Dow Jones Industrial Average in Jeopardy?2026-09-12
“Nike has been removed from the S&P 100 effective September 21 as part of quarterly rebalancing, marking a significant decline for the company. With stock prices at 12-year lows, declining revenue and earnings”
Supports: Nike is deleted from S&P 100 effective September 21 as part of quarterly rebalance.