How much did NVAX move each index today?
XBI: NVAX moved −2.91% and contributed −0.03 points of the index's −0.69-point move (4% of it), ranking #13 of 147 members by contribution to the move.
NVAX closed the 2026-08-25 session at 9.44; that day's move sits in the 96th percentile of its own past year. The stock is 15.6% below its 52-week closing high and +40.5% for the year so far.
NVAX in the XBI beyond today
| window | NVAX return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +19.04% | +0.17 pts | +9.00 pts | #10 of 147 |
| 1 month | +26.03% | +0.22 pts | +18.53 pts | #31 of 147 |
| quarter to date | +0.21% | −0.04 pts | +10.87 pts | #104 of 147 |
| year to date | +40.48% | +1.04 pts | +47.19 pts | #18 of 147 |
Who moved with and against NVAX today?
On NVAX's side of the XBI tape: MRNA (−0.36 pts), SYRE (−0.31 pts), RLAY (−0.09 pts). Pulling the other way: BHVN (+0.18 pts), ERAS (+0.14 pts), SMMT (+0.12 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/NVAX, free to cite with attribution.