How much did CIEN move each index today?
S&P 500: CIEN moved +2.52% and contributed +0.2 points against the index's −3.0-point move, offsetting 5% of it, ranking #450 of 503 members by contribution to the move.
XLK: CIEN moved +2.52% and contributed +0.02 points of the index's +0.70-point move (2% of it), ranking #21 of 73 members by contribution to the move.
CIEN closed the 2026-08-25 session at 387.88; that day's move sits in the 83th percentile of its own past year. The stock is 38.1% below its 52-week closing high and +65.9% for the year so far.
CIEN in the S&P 500 beyond today
| window | CIEN return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | −4.35% | −0.3 pts | −14.5 pts | #76 of 503 |
| 1 month | +2.81% | −0.0 pts | +264.1 pts | #278 of 503 |
| quarter to date | −20.93% | −1.6 pts | +177.9 pts | #464 of 503 |
| year to date | +65.85% | +2.1 pts | +831.8 pts | #86 of 503 |
Who moved with and against CIEN today?
On CIEN's side of the S&P 500 tape: AAPL (+5.5 pts), MSFT (+2.8 pts), META (+1.8 pts). Pulling the other way: NVDA (−8.4 pts), GOOGL (−3.7 pts), LLY (−3.3 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/CIEN, free to cite with attribution.