Twist Bioscience
TWST · NASDAQ
$142.70+$2.93 (+2.10%)TodayMarket closed ·
Prev close $139.77
Who owns TWST
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 57.7% of TWST’s shares.
- BlackRock Institutional Trust Company, N.A.7.9%
- Artisan Partners Limited Partnership7.7%
- Fidelity Management & Research Company LLC7.4%
- ARK Investment Management LLC7.3%
- Next 6 largest institutions27.3%
- All other shareholders42.3%
| Holder | Shares | % of shares |
|---|---|---|
| BlackRock Institutional Trust Company, N.A. | 4.94M | 7.93% |
| Artisan Partners Limited Partnership | 4.80M | 7.71% |
| Fidelity Management & Research Company LLC | 4.61M | 7.40% |
| ARK Investment Management LLC | 4.55M | 7.31% |
| T. Rowe Price Associates, Inc. | 3.55M | 5.70% |
| State Street Investment Management (US) | 3.23M | 5.19% |
| Vanguard Portfolio Management, LLC | 2.82M | 4.54% |
| Vanguard Capital Management, LLC | 2.70M | 4.33% |
| EdgePoint Investment Group Inc. | 2.52M | 4.05% |
| William Blair Investment Management, LLC | 2.17M | 3.49% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| EdgePoint Global Portfolio | 2.81M | 4.51% |
| Vanguard Total Stock Market Index Fund | 1.88M | 3.02% |
| ARK Innovation ETF | 1.68M | 2.70% |
| iShares Russell 2000 ETF | 1.60M | 2.57% |
| State Street SPDR S&P Biotech ETF | 1.55M | 2.49% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $135.08M (120 trades) of TWST on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Laponis Adam | Sale | 2.46K | $384.82K |
| Leproust Emily M. | Sale | 45 | $9.34K |
| Leproust Emily M. | Sale | 146 | $30.20K |
| Leproust Emily M. | Sale | 297 | $61.12K |
| Leproust Emily M. | Sale | 290 | $59.39K |
| Leproust Emily M. | Sale | 432 | $87.96K |
| Leproust Emily M. | Sale | 1.02K | $205.76K |
| Leproust Emily M. | Sale | 481 | $96.80K |
| Leproust Emily M. | Sale | 1.84K | $368.81K |
| Leproust Emily M. | Sale | 45.74K | $8.64M |
Short interest
Settled Sep 30, 2026
- Shares short
- 10.57M
- Days to cover
- 3.83
- % of shares outstanding
- 16.97%
- Average daily volume
- 2.76M
- Change since last report
- −15.5%
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