How much did RCUS move each index today?
XBI: RCUS moved −2.57% and contributed −0.02 points of the index's −0.71-point move (3% of it), ranking #14 of 145 members by contribution to the move.
RCUS closed the 2026-08-26 session at 30.76; that day's move sits in the 18th percentile of its own past year. The stock is 2.6% below its 52-week closing high and +29.1% for the year so far.
RCUS in the XBI beyond today
| window | RCUS return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +1.35% | +0.02 pts | −1.16 pts | #113 of 147 |
| 1 month | +13.72% | +0.15 pts | +18.61 pts | #49 of 147 |
| quarter to date | −0.23% | −0.10 pts | +10.14 pts | #118 of 147 |
| year to date | +29.08% | +0.38 pts | +46.46 pts | #54 of 147 |
Who moved with and against RCUS today?
On RCUS's side of the XBI tape: MRNA (−0.24 pts), SYRE (−0.24 pts), RLAY (−0.08 pts). Pulling the other way: ERAS (+0.11 pts), BHVN (+0.09 pts), SMMT (+0.07 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/RCUS, free to cite with attribution.