How much did IMMX move each index today?
XBI: IMMX moved −1.59% and contributed −0.00 points of the index's −2.31-point move (0% of it), ranking #99 of 154 members by contribution to the move.
IMMX closed the 2026-10-09 session at 9.46; that day's move sits in the 62th percentile of its own past year. The stock is 34.6% below its 52-week closing high and +80.9% for the year so far.
IMMX in the XBI beyond today
| window | IMMX return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | −2.27% | −0.01 pts | −0.68 pts | #78 of 157 |
| 1 month | −25.51% | −0.11 pts | −3.07 pts | #43 of 157 |
| quarter to date | −9.08% | −0.02 pts | −3.93 pts | #66 of 157 |
| year to date | +80.88% | +0.04 pts | +31.82 pts | #71 of 157 |
Who moved with and against IMMX today?
On IMMX's side of the XBI tape: TWST (−0.18 pts), MRNA (−0.18 pts), RXRX (−0.09 pts). Pulling the other way: BIIB (+0.09 pts), REGN (+0.05 pts), BMRN (+0.04 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/IMMX, free to cite with attribution.