How much did PLTR move each index today?
S&P 500: PLTR moved −0.95% and contributed −0.5 points of the index's −2.5-point move (20% of it), ranking #23 of 491 members by contribution to the move.
NASDAQ 100: PLTR moved −0.95% and contributed −3.1 points of the index's −49.1-point move (6% of it), ranking #20 of 100 members by contribution to the move.
XLK: PLTR moved −0.95% and contributed −0.05 points of the index's −2.35-point move (2% of it), ranking #20 of 73 members by contribution to the move.
ARKK: PLTR moved −0.95% and contributed −0.03 points of the index's −1.74-point move (2% of it), ranking #21 of 39 members by contribution to the move.
PLTR closed the 2026-10-09 session at 209.05; that day's move sits in the 94th percentile of its own past year. The stock is at its 52-week closing high and +17.6% for the year so far.
PLTR in the S&P 500 beyond today
| window | PLTR return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +10.75% | +5.4 pts | +88.8 pts | #4 of 503 |
| 1 month | +26.04% | +11.2 pts | +219.8 pts | #8 of 503 |
| quarter to date | +11.76% | +5.8 pts | +160.0 pts | #5 of 503 |
| year to date | +17.61% | +10.6 pts | +966.0 pts | #25 of 503 |
Who moved with and against PLTR today?
On PLTR's side of the S&P 500 tape: NVDA (−8.1 pts), MU (−4.2 pts), AMZN (−3.1 pts). Pulling the other way: META (+7.3 pts), AAPL (+6.0 pts), MSFT (+4.5 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/PLTR, free to cite with attribution.