How much did TWST move each index today?
ARKK: TWST moved +7.54% and contributed +0.25 points of the index's +2.51-point move (10% of it), ranking #2 of 43 members by contribution to the move.
XBI: TWST moved +7.54% and contributed +0.23 points of the index's +4.95-point move (5% of it), ranking #2 of 147 members by contribution to the move.
TWST closed the 2026-08-25 session at 151.42; that day's move sits in the 93th percentile of its own past year. The stock is at its 52-week closing high and +377.4% for the year so far.
TWST in the ARKK beyond today
| window | TWST return | points contributed | index move | rank |
|---|---|---|---|---|
| 1 week | +30.42% | +0.89 pts | +7.28 pts | #3 of 43 |
| 1 month | +74.97% | +1.44 pts | +13.90 pts | #2 of 43 |
| quarter to date | +47.18% | +1.06 pts | +5.61 pts | #3 of 43 |
| year to date | +377.36% | +2.70 pts | +9.51 pts | #1 of 43 |
Who moved with and against TWST today?
On TWST's side of the ARKK tape: CRSP (+0.26 pts), HOOD (+0.25 pts), CRCL (+0.22 pts). Pulling the other way: PLTR (−0.05 pts), ACHR (−0.02 pts), CBRS (−0.01 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/TWST, free to cite with attribution.