How much did ZBIO move each index today?
XBI: ZBIO moved +3.89% and contributed +0.02 points of the index's +4.46-point move (0% of it), ranking #59 of 154 members by contribution to the move.
ZBIO closed the 2026-10-09 session at 27.26; that day's move sits in the 79th percentile of its own past year. The stock is 36.9% below its 52-week closing high and −24.9% for the year so far.
ZBIO in the XBI beyond today
| window | ZBIO return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | −3.66% | −0.02 pts | −0.68 pts | #52 of 157 |
| 1 month | −12.35% | −0.12 pts | −3.07 pts | #42 of 157 |
| quarter to date | +1.08% | +0.00 pts | −3.93 pts | #116 of 157 |
| year to date | −24.92% | +0.14 pts | +31.82 pts | #57 of 157 |
Who moved with and against ZBIO today?
On ZBIO'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/ZBIO, free to cite with attribution.