How much did PTGX move each index today?
XBI: PTGX moved −1.32% and contributed −0.02 points of the index's −0.15-point move (14% of it), ranking #12 of 147 members by contribution to the move.
PTGX closed the 2026-08-27 session at 149.50; that day's move sits in the 26th percentile of its own past year. The stock is 5.7% below its 52-week closing high and +71.2% for the year so far.
PTGX in the XBI beyond today
| window | PTGX return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | −0.79% | −0.01 pts | +4.86 pts | #125 of 147 |
| 1 month | +12.41% | +0.22 pts | +20.33 pts | #31 of 147 |
| quarter to date | +21.96% | +0.35 pts | +9.99 pts | #11 of 147 |
| year to date | +71.17% | +1.03 pts | +46.31 pts | #13 of 147 |
Who moved with and against PTGX today?
On PTGX's side of the XBI tape: MRNA (−0.17 pts), KYMR (−0.08 pts), VERA (−0.07 pts). Pulling the other way: SLS (+0.13 pts), SRPT (+0.10 pts), PURR (+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/PTGX, free to cite with attribution.