How much did PRME move each index today?
XBI: PRME moved +14.15% and contributed +0.03 points of the index's +4.95-point move (1% of it), ranking #49 of 147 members by contribution to the move.
PRME closed the 2026-08-25 session at 3.71; that day's move sits in the 97th percentile of its own past year. The stock is 44.4% below its 52-week closing high and +6.9% for the year so far.
PRME in the XBI beyond today
| window | PRME return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +21.64% | +0.05 pts | +9.00 pts | #51 of 147 |
| 1 month | +23.26% | +0.05 pts | +18.53 pts | #78 of 147 |
| quarter to date | +0.54% | +0.03 pts | +10.87 pts | #78 of 147 |
| year to date | +6.92% | +0.13 pts | +47.19 pts | #85 of 147 |
Who moved with and against PRME today?
On PRME's side of the XBI tape: MRNA (+0.60 pts), TWST (+0.23 pts), BEAM (+0.13 pts). Pulling the other way: PTGX (−0.06 pts), SLS (−0.03 pts), PCVX (−0.03 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/PRME, free to cite with attribution.