How much did MPWR move each index today?
S&P 500: MPWR moved −0.22% and contributed −0.0 points against the index's +5.3-point move, offsetting 0% of it, ranking #388 of 503 members by contribution to the move.
NASDAQ 100: MPWR moved −0.22% and contributed −0.1 points of the index's −8.5-point move, ranking #43 of 102 members by contribution to the move.
XLK: MPWR moved −0.22% and contributed −0.00 points against the index's +0.71-point move, offsetting 0% of it, ranking #51 of 73 members by contribution to the move.
SMH: MPWR moved −0.22% and contributed −0.02 points against the index's +0.36-point move, offsetting 5% of it, ranking #18 of 25 members by contribution to the move.
MPWR closed the 2026-08-25 session at 1,304.15; that day's move sits in the 64th percentile of its own past year. The stock is 22.8% below its 52-week closing high and +44.4% for the year so far.
MPWR in the S&P 500 beyond today
| window | MPWR return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | −2.18% | −0.2 pts | −14.5 pts | #109 of 503 |
| 1 month | −2.61% | −0.2 pts | +264.1 pts | #396 of 503 |
| quarter to date | −5.66% | −0.3 pts | +177.9 pts | #397 of 503 |
| year to date | +44.36% | +1.8 pts | +831.8 pts | #94 of 503 |
Who moved with and against MPWR today?
On MPWR's side of the S&P 500 tape: LLY (−3.1 pts), GOOGL (−2.4 pts), NVDA (−1.9 pts). Pulling the other way: AAPL (+4.7 pts), MSFT (+2.8 pts), AMD (+2.0 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/MPWR, free to cite with attribution.