How much did ALKS move each index today?
XBI: ALKS moved −0.10% and contributed −0.00 points of the index's −0.71-point move (0% of it), ranking #82 of 145 members by contribution to the move.
ALKS closed the 2026-08-26 session at 49.16; that day's move sits in the 48th percentile of its own past year. The stock is 11.0% below its 52-week closing high and +75.7% for the year so far.
ALKS in the XBI beyond today
| window | ALKS return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | −2.03% | −0.03 pts | −1.16 pts | #33 of 147 |
| 1 month | −2.65% | −0.05 pts | +18.61 pts | #130 of 147 |
| quarter to date | −6.17% | −0.12 pts | +10.14 pts | #121 of 147 |
| year to date | +75.70% | +0.71 pts | +46.46 pts | #27 of 147 |
Who moved with and against ALKS today?
On ALKS's side of the XBI tape: MRNA (−0.24 pts), SYRE (−0.24 pts), RLAY (−0.08 pts). Pulling the other way: ERAS (+0.11 pts), BHVN (+0.09 pts), SMMT (+0.07 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/ALKS, free to cite with attribution.