How much did IBRX move each index today?
XBI: IBRX moved +6.05% and contributed +0.11 points of the index's +4.46-point move (3% of it), ranking #11 of 154 members by contribution to the move.
IBRX closed the 2026-10-09 session at 10.51; that day's move sits in the 85th percentile of its own past year. The stock is 9.0% below its 52-week closing high and +430.8% for the year so far.
IBRX in the XBI beyond today
| window | IBRX return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +2.19% | +0.05 pts | −0.68 pts | #131 of 157 |
| 1 month | +36.14% | +0.48 pts | −3.07 pts | #150 of 157 |
| quarter to date | +11.33% | +0.14 pts | −3.93 pts | #153 of 157 |
| year to date | +430.81% | +2.09 pts | +31.82 pts | #4 of 157 |
Who moved with and against IBRX today?
On IBRX'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/IBRX, free to cite with attribution.