Sutro Biopharma Ownership | Who Owns Sutro Biopharma?
Sutro Biopharma Ownership Summary
Sutro Biopharma is owned by 65.70% institutional investors, 4.56% insiders, and 29.74% retail investors. Blackrock is the largest institutional shareholder, holding 11.24% of STRO shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 2.88% of its assets in Sutro Biopharma shares.
STRO Ownership Benchmark
| Type | Name | % Inst | % Insiders | % Retail |
|---|---|---|---|---|
| Stock | Sutro Biopharma | 65.70% | 4.56% | 29.74% |
| Sector | Healthcare Stocks | 488.17% | 11.08% | -399.26% |
| Industry | Biotech Stocks | 306.59% | 11.10% | -217.69% |
Institutional Shareholders
Top Institutional Shareholders by Total Shares
| Holder | Shares | % Holding | Value |
|---|---|---|---|
| Blackrock | 6.91M | 11.24% | $20.25M |
| Suvretta capital management | 6.49M | 7.67% | $4.63M |
| Kynam capital management, lp | 5.09M | 6.02% | $3.63M |
| Vanguard group | 4.21M | 5.13% | $7.74M |
| Acadian asset management | 3.04M | 3.60% | $2.17M |
| Merck | 2.72M | 3.22% | $1.94M |
| Vestal point capital, lp | 2.60M | 3.07% | $1.86M |
| Tang capital management | 2.56M | 3.03% | $1.83M |
| Eversept partners, lp | 2.29M | 2.71% | $1.64M |
| Samsara biocapital | 2.20M | 2.60% | $1.57M |
Top Institutional Shareholders by % of Total Assets
| Holder | Shares | % Assets | Value |
|---|---|---|---|
| Merck | 2.72M | 0.90% | $1.94M |
| Velan capital investment management lp | 1.03M | 0.69% | $670.12K |
| Kynam capital management, lp | 5.09M | 0.39% | $3.63M |
| Samsara biocapital | 2.20M | 0.32% | $1.57M |
| Eversept partners, lp | 2.29M | 0.15% | $1.64M |
| Suvretta capital management | 6.49M | 0.14% | $4.63M |
| Aju ib investment | 175.00K | 0.14% | $124.93K |
| Vestal point capital, lp | 2.60M | 0.10% | $1.86M |
| Tang capital management | 2.56M | 0.09% | $1.83M |
| Dafna capital management | 437.08K | 0.09% | $312.03K |
Top Buyers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Tang capital management | 2.56M | 0.09% | 2.36M |
| Blackrock | 6.91M | 0.00% | 1.21M |
| Velan capital investment management lp | 1.03M | 0.69% | 1.00M |
| Cantor fitzgerald, l. p. | 500.00K | 0.01% | 500.00K |
| Prudential financial | 547.51K | 0.00% | 426.10K |
Top Sellers
| Holder | Shares | % Assets | Change |
|---|---|---|---|
| Ra capital management | - | - | -4.43M |
| Blackrock funding, inc. /de | 2.11M | - | -4.10M |
| Point72 asset management | - | - | -2.20M |
| Bioimpact capital | - | - | -2.16M |
| Parkman healthcare partners | - | - | -1.73M |
New Positions
| Holder | Shares | % Assets | Change | Value |
|---|---|---|---|---|
| Cantor fitzgerald, l. p. | 500.00K | 0.01% | 500.00K | $356.95K |
| Marshall wace, llp | 234.43K | 0.00% | 234.43K | $166.45K |
| Lpl financial | 230.15K | 0.00% | 230.15K | $674.34K |
| Rbf capital | 160.00K | 0.01% | 160.00K | $114.22K |
| Qube research | 115.40K | 0.00% | 115.40K | $82.39K |
Sold Out
| Holder | Change |
|---|---|
| Farther finance advisors | -9.00 |
| Nelson, van denburg & campbell wealth management group | -13.00 |
| Allspring global investments | -15.00 |
| Ifp advisors | -30.00 |
| Allworth financial lp | -50.00 |
Institutional Ownership Trends
| Date | Holdings | Change % | Shares | Change % | Ownership | Change % | Increased Position | Change % | Decreased Position | Change % |
|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| Sep 30, 2024 | 133 | 9.02% | 62,516,015 | -1.03% | 76 | 1.26% | 73 | -7.59% | 31 | 10.71% |
| Jun 30, 2024 | 122 | 3.39% | 63,167,394 | 18.26% | 77 | 1.03% | 79 | 16.18% | 28 | -12.50% |
Top Mutual Funds Shareholders
| Holder | Shares | % Holding | Change |
|---|---|---|---|
| Vanguard US Total Market Shares ETF | 2.42M | 2.88% | - |
| Vanguard Total Stock Mkt Idx Inv | 2.36M | 2.79% | -51.67K |
| Baillie Gifford Global Discovery A Acc | 904.60K | 1.10% | -13.25K |
| Fidelity Small Cap Index | 835.21K | 0.99% | -23.86K |
| Vanguard Institutional Extnd Mkt Idx Tr | 815.39K | 0.96% | -371.55K |
| 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% | - |
| iShares Biotechnology ETF | 481.13K | 0.57% | 4.11K |
Recent Insider Transactions
| Date | Name | Role | Activity | Value |
|---|---|---|---|---|
| Jan 29, 2024 | Vasquez Nicki | CHIEF PORT. STRAT & ALNCE OFCR | Sell | $60.92K |
| Aug 28, 2023 | Shtylla Brunilda | Chief Business Officer | Sell | $72.59K |
| Aug 25, 2023 | Shtylla Brunilda | Chief Business Officer | Sell | $53.28K |
| Mar 14, 2022 | NEWELL WILLIAM J | CEO | Buy | $77.51K |
| Sep 28, 2021 | Vasquez Nicki | Chief Port. Strat & Alnce Ofcr | Sell | $72.72K |
Insider Transactions Trends
| Date | Buy | Sell |
|---|---|---|
| 2025 Q2 | - | - |
| 2025 Q1 | - | - |
| 2024 Q4 | - | - |
| 2024 Q3 | - | - |
| 2024 Q2 | - | - |
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