How much did SLDB move each index today?
XBI: SLDB moved −2.33% and contributed −0.01 points of the index's −1.61-point move (1% of it), ranking #65 of 147 members by contribution to the move.
SLDB closed the 2026-08-25 session at 9.89; that day's move sits in the 94th percentile of its own past year. The stock is 11.3% below its 52-week closing high and +75.4% for the year so far.
SLDB in the XBI beyond today
| window | SLDB return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +8.92% | +0.03 pts | +9.00 pts | #63 of 147 |
| 1 month | +25.35% | +0.07 pts | +18.53 pts | #72 of 147 |
| quarter to date | −1.00% | +0.02 pts | +10.87 pts | #82 of 147 |
| year to date | +75.35% | +0.17 pts | +47.19 pts | #79 of 147 |
Who moved with and against SLDB today?
On SLDB's side of the XBI tape: MRNA (−0.33 pts), SYRE (−0.28 pts), RLAY (−0.10 pts). Pulling the other way: ERAS (+0.11 pts), SMMT (+0.09 pts), SRRK (+0.08 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.