How much did COST move each index today?
S&P 500: COST moved −0.30% and contributed −0.2 points against the index's +0.7-point move, ranking #466 of 503 members by contribution to the move.
NASDAQ 100: COST moved −0.30% and contributed −0.8 points of the index's −38.7-point move (2% of it), ranking #23 of 102 members by contribution to the move.
XLP: COST moved −0.30% and contributed −0.02 points of the index's −0.21-point move (11% of it), ranking #5 of 34 members by contribution to the move.
COST closed the 2026-08-25 session at 960.01; that day's move sits in the 13th percentile of its own past year. The stock is 12.3% below its 52-week closing high and +11.6% for the year so far.
COST in the S&P 500 beyond today
| window | COST return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | −0.14% | −0.1 pts | −14.5 pts | #152 of 503 |
| 1 month | +0.89% | +0.5 pts | +264.1 pts | #109 of 503 |
| quarter to date | +2.78% | +0.8 pts | +177.9 pts | #110 of 503 |
| year to date | +11.64% | +3.9 pts | +831.8 pts | #55 of 503 |
Who moved with and against COST today?
On COST's side of the S&P 500 tape: NVDA (−8.6 pts), LLY (−4.1 pts), GOOGL (−3.4 pts). Pulling the other way: AAPL (+6.1 pts), MSFT (+3.8 pts), META (+1.5 pts).
Every member's contribution, top to bottom, is on the index dashboards; the day's story is in the market-close note. Machine-readable figures for this stock: /api/stock/COST, free to cite with attribution.