How much did MYGN move each index today?
XBI: MYGN moved −2.19% and contributed −0.00 points of the index's −1.32-point move (0% of it), ranking #89 of 147 members by contribution to the move.
MYGN closed the 2026-08-25 session at 3.19; that day's move sits in the 88th percentile of its own past year. The stock is 61.0% below its 52-week closing high and −48.1% for the year so far.
MYGN in the XBI beyond today
| window | MYGN return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +11.15% | +0.02 pts | +9.00 pts | #81 of 147 |
| 1 month | −41.47% | −0.10 pts | +18.53 pts | #135 of 147 |
| quarter to date | −44.13% | −0.12 pts | +10.87 pts | #126 of 147 |
| year to date | −48.13% | −0.09 pts | +47.19 pts | #123 of 147 |
Who moved with and against MYGN today?
On MYGN'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/MYGN, free to cite with attribution.