How much did ROK move each index today?
S&P 500: ROK moved +0.30% and contributed +0.0 points of the index's +55.3-point move (0% of it), ranking #103 of 501 members by contribution to the move.
XLI: ROK moved +0.30% and contributed +0.00 points against the index's −1.53-point move, offsetting 0% of it, ranking #71 of 81 members by contribution to the move.
ROK closed the 2026-08-27 session at 433.03; that day's move sits in the 54th percentile of its own past year. The stock is 12.5% below its 52-week closing high and +12.0% for the year so far.
ROK in the S&P 500 beyond today
| window | ROK return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +0.37% | +0.0 pts | +89.8 pts | #225 of 503 |
| 1 month | −5.45% | −0.4 pts | +414.8 pts | #434 of 503 |
| quarter to date | −12.53% | −0.8 pts | +231.6 pts | #435 of 503 |
| year to date | +12.05% | +0.3 pts | +885.5 pts | #233 of 503 |
Who moved with and against ROK today?
On ROK's side of the S&P 500 tape: NVDA (+56.4 pts), AVGO (+10.0 pts), MSFT (+8.8 pts). Pulling the other way: AMZN (−5.5 pts), GE (−1.8 pts), LLY (−1.6 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/ROK, free to cite with attribution.