How much did VIR move each index today?
XBI: VIR moved −3.17% and contributed −0.02 points of the index's −2.28-point move (1% of it), ranking #31 of 147 members by contribution to the move.
VIR closed the 2026-08-25 session at 10.71; that day's move sits in the 96th percentile of its own past year. The stock is 3.4% below its 52-week closing high and +77.6% for the year so far.
VIR in the XBI beyond today
| window | VIR return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +12.86% | +0.09 pts | +9.00 pts | #29 of 147 |
| 1 month | +21.70% | +0.14 pts | +18.53 pts | #52 of 147 |
| quarter to date | +5.10% | +0.05 pts | +10.87 pts | #68 of 147 |
| year to date | +77.61% | +0.17 pts | +47.19 pts | #80 of 147 |
Who moved with and against VIR today?
On VIR's side of the XBI tape: SYRE (−0.27 pts), MRNA (−0.22 pts), RLAY (−0.10 pts). Pulling the other way: SMMT (+0.16 pts), PGEN (+0.03 pts), PRAX (+0.03 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/VIR, free to cite with attribution.