How much did MRNA move each index today?
S&P 500: MRNA moved +14.36% and contributed +0.8 points of the index's +24.4-point move (3% of it), ranking #12 of 503 members by contribution to the move.
XLV: MRNA moved +14.36% and contributed +0.20 points of the index's +0.60-point move (34% of it), ranking #2 of 59 members by contribution to the move.
XBI: MRNA moved +14.36% and contributed +0.60 points of the index's +4.95-point move (12% of it), ranking #1 of 147 members by contribution to the move.
MRNA closed the 2026-08-25 session at 158.83; that day's move sits in the 98th percentile of its own past year. The stock is 8.9% below its 52-week closing high and +438.6% for the year so far.
MRNA in the S&P 500 beyond today
| window | MRNA return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +152.27% | +3.4 pts | −14.5 pts | #498 of 503 |
| 1 month | +185.51% | +3.7 pts | +264.1 pts | #20 of 503 |
| quarter to date | +126.80% | +3.2 pts | +177.9 pts | #33 of 503 |
| year to date | +438.59% | +4.6 pts | +831.8 pts | #46 of 503 |
Who moved with and against MRNA today?
On MRNA's side of the S&P 500 tape: NVDA (+13.8 pts), AMD (+4.4 pts), MSFT (+4.1 pts). Pulling the other way: XOM (−1.8 pts), LLY (−1.3 pts), AMZN (−1.3 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.