How much did SLDB move each index today?
XBI: SLDB moved +0.73% and contributed +0.00 points of the index's +4.46-point move (0% of it), ranking #115 of 154 members by contribution to the move.
SLDB closed the 2026-10-09 session at 6.87; that day's move sits in the 56th percentile of its own past year. The stock is 38.4% below its 52-week closing high and +21.8% for the year so far.
SLDB in the XBI beyond today
| window | SLDB return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +0.29% | +0.00 pts | −0.68 pts | #91 of 157 |
| 1 month | −24.26% | −0.08 pts | −3.07 pts | #55 of 157 |
| quarter to date | −4.98% | −0.01 pts | −3.93 pts | #93 of 157 |
| year to date | +21.81% | +0.02 pts | +31.82 pts | #74 of 157 |
Who moved with and against SLDB today?
On SLDB'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/SLDB, free to cite with attribution.