How much did MLYS move each index today?
XBI: MLYS moved +4.42% and contributed +0.02 points of the index's +4.46-point move (1% of it), ranking #50 of 154 members by contribution to the move.
MLYS closed the 2026-10-09 session at 23.37; that day's move sits in the 91th percentile of its own past year. The stock is 50.6% below its 52-week closing high and −35.6% for the year so far.
MLYS in the XBI beyond today
| window | MLYS return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | −1.10% | −0.01 pts | −0.68 pts | #79 of 157 |
| 1 month | −20.24% | −0.14 pts | −3.07 pts | #35 of 157 |
| quarter to date | −7.00% | −0.04 pts | −3.93 pts | #52 of 157 |
| year to date | −35.60% | −0.29 pts | +31.82 pts | #133 of 157 |
Who moved with and against MLYS today?
On MLYS'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/MLYS, free to cite with attribution.