How much did ALKS move each index today?
XBI: ALKS moved +1.25% and contributed +0.03 points of the index's +4.46-point move (1% of it), ranking #47 of 154 members by contribution to the move.
ALKS closed the 2026-10-09 session at 40.61; that day's move sits in the 73th percentile of its own past year. The stock is 26.5% below its 52-week closing high and +45.1% for the year so far.
ALKS in the XBI beyond today
| window | ALKS return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | −2.73% | −0.05 pts | −0.68 pts | #27 of 157 |
| 1 month | −11.93% | −0.34 pts | −3.07 pts | #16 of 157 |
| quarter to date | +0.22% | −0.01 pts | −3.93 pts | #89 of 157 |
| year to date | +45.14% | +0.46 pts | +31.82 pts | #39 of 157 |
Who moved with and against ALKS today?
On ALKS'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/ALKS, free to cite with attribution.