Sutro Biopharma Ownership | Who Owns Sutro Biopharma?
Sutro Biopharma Ownership Summary
Sutro Biopharma is owned by 0.21% institutional investors, 4.69% insiders, and 95.11% retail investors. Blackrock is the largest institutional shareholder, holding 11.24% of STRO shares. Vanguard Total Stock Mkt Idx Inv is the top mutual fund, with 3.22% of its assets in Sutro Biopharma shares.
STRO Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Sutro Biopharma | 0.21% | 4.69% | 95.11% |
| Sector | Healthcare Stocks | 232.86% | 10.65% | -143.51% |
| Industry | Biotech Stocks | 382.13% | 10.41% | -292.54% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock | 6.91M | 11.24% | $20.25M |
| Affinity asset advisors | 748.38K | 8.82% | $8.66B |
| Suvretta capital management | 6.49M | 7.67% | $5.63M |
| Kynam capital management, lp | 5.09M | 6.02% | $4.42M |
| Ubs group | 392.87K | 4.58% | $9.79M |
| Tang capital management | 2.83M | 3.34% | $2.46M |
| Merck | 2.72M | 3.22% | $2.37M |
| Vestal point capital, lp | 2.60M | 3.07% | $2.26M |
| Eversept partners, lp | 2.29M | 2.71% | $1.99M |
| Samsara biocapital | 2.20M | 2.60% | $1.91M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Merck | 2.72M | 1.04% | $2.37M |
| Aju ib investment | 17.50K | 0.89% | $202.47K |
| Affinity asset advisors | 748.38K | 0.49% | $8.66B |
| Kynam capital management, lp | 5.09M | 0.33% | $4.42M |
| Samsara biocapital | 2.20M | 0.25% | $1.91M |
| Suvretta capital management | 6.49M | 0.14% | $5.63M |
| Eversept partners, lp | 2.29M | 0.14% | $1.99M |
| Vestal point capital, lp | 2.60M | 0.10% | $2.26M |
| Tang capital management | 2.83M | 0.09% | $2.46M |
| Dafna capital management | 437.08K | 0.09% | $379.56K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Blackrock | 6.91M | 0.00% | 1.21M |
| Affinity asset advisors | 748.38K | 0.49% | 748.38K |
| Ubs group | 392.87K | 0.00% | 385.00K |
| Millennium management | 703.15K | 0.00% | 297.54K |
| Two sigma investments, lp | 396.79K | 0.00% | 281.72K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Ra capital management | - | - | -4.43M |
| Vanguard group | - | - | -3.68M |
| Acadian asset management | - | - | -3.39M |
| Velan capital investment management lp | - | - | -3.12M |
| Point72 asset management | - | - | -2.20M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Affinity asset advisors | 748.38K | 0.49% | 748.38K | $8.66B |
| Vanguard fiduciary trust | 94.84K | 0.00% | 94.84K | $2.36M |
| Marshall wace, llp | 85.61K | 0.00% | 85.61K | $990.57M |
| Nomura | 43.43K | 0.00% | 43.43K | $127.24K |
| Jane street group | 22.95K | - | 22.95K | $265.47K |
Sold Out
| Holder | Change |
|---|---|
| Sbi securities | -2.00 |
| Farther finance advisors | -9.00 |
| Nelson, van denburg & campbell wealth management group | -13.00 |
| Allspring global investments | -15.00 |
| Group one trading | -20.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | 3 | -96.51% | 17,606 | -99.97% | - | 0.01% | 1 | -96.55% | 2 | -93.94% |
| Sep 30, 2025 | 26 | -74.26% | 4,544,952 | -91.82% | 5 | 0.12% | 6 | -88.68% | 12 | -50.00% |
| Jun 30, 2025 | 100 | -14.53% | 55,566,817 | -9.91% | 65 | 1.19% | 52 | -10.34% | 24 | -27.27% |
| Mar 31, 2025 | 9 | -92.74% | 19,888,115 | -68.79% | 23 | 0.40% | 7 | -89.06% | - | -100.00% |
| Dec 31, 2024 | 121 | -9.70% | 63,450,822 | 1.49% | 77 | 1.33% | 62 | -15.07% | 35 | 9.38% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard Total Stock Mkt Idx Inv | 533.12K | 3.22% | 297.50K |
| Vanguard US Total Market Shares ETF | 2.42M | 2.88% | - |
| Baillie Gifford Global Discovery A Acc | 904.60K | 1.10% | -13.25K |
| Vanguard Institutional Extnd Mkt Idx Tr | 169.17K | 1.02% | 87.63K |
| Fidelity Small Cap Index | 835.21K | 0.99% | -23.86K |
| iShares Russell 2000 Value ETF | 728.08K | 0.86% | - |
| Edinburgh Worldwide Ord | 555.93K | 0.67% | -194.80K |
| State St Russell Sm/Mid Cp® Indx NL Cl C | 502.75K | 0.60% | - |
| State St Russell Sm/Mid Cp® Indx SL Cl I | 502.75K | 0.60% | - |
| Goldman Sachs Small Cp Val Insghts Instl | 467.61K | 0.55% | - |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Oct 15, 2025 | Gerber Hans-Peter | CHIEF SCIENTIFIC OFFICER | Buy | $13.61K |
| Oct 15, 2025 | Chow Gregory K. | CFO | Buy | $16.00K |
| Oct 15, 2025 | Chung Jane | Chief Executive Officer | Buy | $10.01K |
| Oct 15, 2025 | MATSUI CONNIE | - | Buy | $39.95K |
| Oct 15, 2025 | Pauling David | Chief Admin. Ofcr. & GC | Buy | $9.99K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2026 Q1 | - | - |
| 2025 Q4 | 5 | - |
| 2025 Q3 | - | - |
| 2025 Q2 | - | - |
| 2025 Q1 | - | - |
STRO Ownership FAQ
Try Tickergate Pro Free
Customize Everything. 100% Flexibility. Fast and Easy to Use (No code or Excel Needed)
Customize your own personal stocks lists, views and charts
Choose from hundreds of fields, up to 15 years of history
Conduct deep comparison analysis
Discover trending investment themes
Find your next best investment
Research stocks using tools