How much did MRNA move each index today?
S&P 500: MRNA moved +14.21% and contributed +1.1 points of the index's +46.2-point move (2% of it), ranking #14 of 491 members by contribution to the move.
NASDAQ 100: MRNA moved +14.21% and contributed +6.0 points of the index's +157.3-point move (4% of it), ranking #11 of 100 members by contribution to the move.
XBI: MRNA moved +14.21% and contributed +0.45 points of the index's +4.46-point move (10% of it), ranking #1 of 154 members by contribution to the move.
XLV: MRNA moved +14.21% and contributed +0.26 points of the index's +2.66-point move (10% of it), ranking #2 of 59 members by contribution to the move.
MRNA closed the 2026-10-09 session at 225.00; that day's move sits in the 98th percentile of its own past year. The stock is at its 52-week closing high and +663.0% for the year so far.
MRNA in the S&P 500 beyond today
| window | MRNA return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +18.41% | +1.4 pts | +88.8 pts | #23 of 503 |
| 1 month | +64.69% | +3.5 pts | +219.8 pts | #21 of 503 |
| quarter to date | +16.84% | +1.3 pts | +160.0 pts | #34 of 503 |
| year to date | +662.97% | +7.3 pts | +966.0 pts | #37 of 503 |
Who moved with and against MRNA today?
On MRNA's side of the S&P 500 tape: MSFT (+11.3 pts), AMZN (+10.0 pts), PLTR (+2.8 pts). Pulling the other way: AAPL (−7.0 pts), NVDA (−3.7 pts), VZ (−2.7 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/MRNA, free to cite with attribution.