How much did NBIX move each index today?
XBI: NBIX moved +0.49% and contributed +0.01 points against the index's −1.45-point move, offsetting 0% of it, ranking #125 of 147 members by contribution to the move.
NBIX closed the 2026-08-25 session at 153.37; that day's move sits in the 54th percentile of its own past year. The stock is 17.3% below its 52-week closing high and +8.1% for the year so far.
NBIX in the XBI beyond today
| window | NBIX return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | −0.56% | −0.01 pts | +9.00 pts | #112 of 147 |
| 1 month | −13.06% | −0.21 pts | +18.53 pts | #143 of 147 |
| quarter to date | −9.00% | −0.13 pts | +10.87 pts | #127 of 147 |
| year to date | +8.14% | +0.06 pts | +47.19 pts | #103 of 147 |
Who moved with and against NBIX today?
On NBIX's side of the XBI tape: ERAS (+0.13 pts), SMMT (+0.09 pts), SRRK (+0.09 pts). Pulling the other way: MRNA (−0.31 pts), SYRE (−0.29 pts), RLAY (−0.10 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/NBIX, free to cite with attribution.