How much did NVAX move each index today?
XBI: NVAX moved +15.80% and contributed +0.12 points of the index's +4.46-point move (3% of it), ranking #9 of 154 members by contribution to the move.
NVAX closed the 2026-10-09 session at 12.75; that day's move sits in the 98th percentile of its own past year. The stock is at its 52-week closing high and +89.7% for the year so far.
NVAX in the XBI beyond today
| window | NVAX return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +21.89% | +0.16 pts | −0.68 pts | #154 of 157 |
| 1 month | +37.10% | +0.24 pts | −3.07 pts | #146 of 157 |
| quarter to date | +17.95% | +0.14 pts | −3.93 pts | #154 of 157 |
| year to date | +89.73% | +0.91 pts | +31.82 pts | #21 of 157 |
Who moved with and against NVAX today?
On NVAX's side of the XBI tape: MRNA (+0.45 pts), IOVA (+0.23 pts), PCVX (+0.19 pts). Pulling the other way: PRAX (−0.03 pts), MDGL (−0.02 pts), PURR (−0.02 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.