How much did RARE move each index today?
XBI: RARE moved −0.91% and contributed −0.01 points of the index's −1.32-point move (1% of it), ranking #45 of 147 members by contribution to the move.
RARE closed the 2026-08-25 session at 26.46; that day's move sits in the 81th percentile of its own past year. The stock is 27.6% below its 52-week closing high and +15.0% for the year so far.
RARE in the XBI beyond today
| window | RARE return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +3.81% | +0.06 pts | +9.00 pts | #47 of 147 |
| 1 month | −1.60% | −0.03 pts | +18.53 pts | #120 of 147 |
| quarter to date | −20.75% | −0.34 pts | +10.87 pts | #141 of 147 |
| year to date | +15.04% | +0.26 pts | +47.19 pts | #65 of 147 |
Who moved with and against RARE today?
On RARE's side of the XBI tape: MRNA (−0.35 pts), SYRE (−0.29 pts), RLAY (−0.10 pts). Pulling the other way: ERAS (+0.17 pts), BHVN (+0.11 pts), SMMT (+0.10 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/RARE, free to cite with attribution.