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  2. TWST

(TWST)

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Ownership

Major Holders

Breakdown
1.52%% of Shares Held by All Insider
122.67%% of Shares Held by Institutions
124.56%% of Float Held by Institutions
350Number of Institutions Holding Shares

Top Institutional Holders

HolderSharesDate Reported% OutValue
ARK Investment Management, LLC7.56M2025-12-3112.33%$336.62M
William Blair Investment Management, LLC5.95M2025-12-319.71%$265.15M
Blackrock Inc.5.89M2025-12-319.61%$262.50M
Artisan Partners Limited Partnership5.83M2025-12-319.51%$259.62M
Vanguard Group Inc5.78M2025-12-319.42%$257.21M
Edgepoint Investment Group Inc.5.38M2025-12-318.77%$239.48M
State Street Corporation3.63M2025-12-315.92%$161.55M
Sumitomo Mitsui Trust Group, Inc.1.90M2025-12-313.10%$84.73M
Amova Asset Management Americas Inc1.90M2025-12-313.10%$84.73M
Soleus Capital Management, L.P.1.86M2025-12-313.04%$82.91M

Top Mutual Fund Holders

HolderSharesDate Reported% OutValue
ARK ETF Trust-ARK Innovation ETF4.19M2026-01-316.84%$186.70M
ARK ETF Trust-ARK Genomic Revolution ETF2.23M2026-01-313.64%$99.26M
SPDR SERIES TRUST-State Street SPDR S&P Biotech ETF1.97M2026-01-313.22%$87.93M
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund1.83M2025-12-312.98%$81.32M
iShares Trust-iShares Russell 2000 ETF1.42M2026-01-312.32%$63.32M
VANGUARD INDEX FUNDS-Vanguard Small-Cap Index Fund1.32M2025-12-312.15%$58.60M
Artisan Partners Funds Inc.-Artisan Mid Cap Fund1.08M2025-12-311.77%$48.20M
Thrivent Mutual Funds-Thrivent Small Cap Stock Fund830,3432025-10-311.35%$36.98M
Artisan Partners Funds Inc.-Artisan Small Cap Fund790,1942025-09-301.29%$37.08M
VANGUARD INDEX FUNDS-Vanguard Small-Cap Growth Index Fund742,5652025-12-311.21%$33.07M
Bridge Builder Trust-Bridge Builder Small/Mid Cap Growth Fund693,5792025-12-311.13%$30.89M