How much did MU move each index today?
S&P 500: MU moved −0.66% and contributed −1.0 points against the index's +46.2-point move, offsetting 2% of it, ranking #483 of 491 members by contribution to the move.
NASDAQ 100: MU moved −0.66% and contributed −4.2 points against the index's +157.3-point move, offsetting 3% of it, ranking #94 of 100 members by contribution to the move.
XLK: MU moved −0.66% and contributed −0.06 points against the index's +1.00-point move, offsetting 6% of it, ranking #69 of 73 members by contribution to the move.
SMH: MU moved −0.66% and contributed −0.22 points of the index's −3.94-point move (6% of it), ranking #8 of 24 members by contribution to the move.
MU closed the 2026-10-09 session at 1,029.00; that day's move sits in the 38th percentile of its own past year. The stock is 15.2% below its 52-week closing high and +260.7% for the year so far.
MU in the S&P 500 beyond today
| window | MU return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | −4.27% | −6.2 pts | +88.8 pts | #501 of 503 |
| 1 month | +5.28% | +7.1 pts | +219.8 pts | #12 of 503 |
| quarter to date | −3.39% | −4.9 pts | +160.0 pts | #502 of 503 |
| year to date | +260.70% | +99.4 pts | +966.0 pts | #3 of 503 |
Who moved with and against MU today?
On MU's side of the S&P 500 tape: AAPL (−7.0 pts), NVDA (−3.7 pts), VZ (−2.7 pts). Pulling the other way: MSFT (+11.3 pts), AMZN (+10.0 pts), PLTR (+2.8 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/MU, free to cite with attribution.