How much did SION move each index today?
XBI: SION moved −1.60% and contributed −0.00 points of the index's −0.71-point move (0% of it), ranking #86 of 147 members by contribution to the move.
SION closed the 2026-08-25 session at 6.25; that day's move sits in the 96th percentile of its own past year. The stock is 87.8% below its 52-week closing high and −84.8% for the year so far.
SION in the XBI beyond today
| window | SION return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +5.22% | +0.00 pts | +9.00 pts | #98 of 147 |
| 1 month | −86.23% | −0.32 pts | +18.53 pts | #147 of 147 |
| quarter to date | −85.79% | −0.31 pts | +10.87 pts | #140 of 147 |
| year to date | −84.81% | −0.26 pts | +47.19 pts | #134 of 147 |
Who moved with and against SION today?
On SION's side of the XBI tape: MRNA (−0.36 pts), SYRE (−0.29 pts), RLAY (−0.10 pts). Pulling the other way: BHVN (+0.19 pts), ERAS (+0.12 pts), SMMT (+0.11 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/SION, free to cite with attribution.