Sutro Biopharma, Inc.
STRO- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001382101
No open-market purchases or sales by Sutro Biopharma, Inc. insiders were filed in the last 90 days; 100 institutions reported holding it in 13F filings for Q2 2026, worth $545.7M in total; no superinvestor holds it.
13F holders, Q2 2025
Institutional positions in Sutro Biopharma, Inc. as of Jun 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 101
- −12 vs. Q1 2025
- Shares held
- 55.8M
- −5.72M (−9.3%) vs. Q1 2025
- Total value
- $39.8M
- −$191.3K (−0.5%) vs. Q1 2025
- New holders
- 31
- 23 more added
- Sold out
- 43
- 24 more reduced
Compare with Q1 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting STRO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 100 | $545.7M |
| Q1 2026 | 78 | $358.9M |
| Q4 2025 | 63 | $65.0M |
| Q3 2025 | 88 | $46.4M |
| Q2 2025 | 101 | $39.8M |
| Q1 2025 | 113 | $40.0M |
| Q4 2024 | 123 | $117.6M |
| Q3 2024 | 130 | $216.6M |
| Q2 2024 | 119 | $185.2M |
| Q1 2024 | 117 | $308.2M |
| Q4 2023 | 114 | $240.0M |
| Q3 2023 | 109 | $194.3M |
| Q2 2023 | 120 | $251.6M |
| Q1 2023 | 116 | $247.9M |
| Q4 2022 | 119 | $403.7M |
| Q3 2022 | 113 | $286.6M |
| Q2 2022 | 115 | $240.9M |
| Q1 2022 | 114 | $342.2M |
| Q4 2021 | 117 | $599.0M |
| Q3 2021 | 120 | $752.5M |
| Q2 2021 | 124 | $766.7M |
| Q1 2021 | 138 | $1.01B |
Institutions, Q2 2025
Shares, value and share of portfolio for each institution holding Sutro Biopharma, Inc.; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Suvretta Capital Management, LLC | 6,488,324 | $4.63M | 0.17% | −974,171−13.1% | Reduced |
| Kynam Capital Management, LP | 5,088,099 | $3.63M | 0.39% | −353,348−6.5% | Reduced |
| Millennium Management LLC | 4,732,243 | $3.38M | 0.00% | +4,029,088+573.0% | Added |
| Vanguard Group Inc | 4,115,250 | $2.94M | 0.00% | −279,994−6.4% | Reduced |
| Velan Capital Investment Management LP | 3,060,000 | $2.18M | 2.19% | +2,030,000+197.1% | Added |
| Acadian Asset Management LLC | 3,042,238 | $2.17M | 0.00% | −92,348−2.9% | Reduced |
| Merck & Co., Inc. | 2,723,509 | $1.94M | 0.90% | 00.0% | Unchanged |
| Vestal Point Capital, LP | 2,600,000 | $1.86M | 0.10% | 00.0% | Unchanged |
| Tang Capital Management LLC | 2,561,586 | $1.83M | 0.09% | +2,361,586+1,180.8% | Added |
| Eversept Partners, LP | 2,292,261 | $1.64M | 0.16% | 00.0% | Unchanged |
| Samsara BioCapital, LLC | 2,196,814 | $1.57M | 0.32% | 00.0% | Unchanged |
| BlackRock, Inc. | 2,107,008 | $1.50M | 0.00% | −4,097,776−66.0% | Reduced |
| Adage Capital Partners GP, L.L.C. | 2,000,000 | $1.43M | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 1,618,884 | $1.16M | 0.00% | +1,543,313+2,042.2% | Added |
| AQR Capital Management LLC | 1,012,716 | $723.0K | 0.00% | −308,201−23.3% | Reduced |
| Renaissance Technologies LLC | 913,197 | $651.9K | 0.00% | +44,200+5.1% | Added |
| Geode Capital Management, LLC | 816,915 | $583.4K | 0.00% | −1,072,357−56.8% | Reduced |
| Affinity Asset Advisors, LLC | 752,722 | $537.4K | 0.08% | 00.0% | Unchanged |
| Jane Street Group, LLC | 688,850 | $491.8K | 0.00% | +688,850 | New |
| Dimensional Fund Advisors LP | 628,473 | $448.8K | 0.00% | −189,006−23.1% | Reduced |
| Cantor Fitzgerald, L. P. | 500,000 | $356.9K | 0.01% | +500,000 | New |
| Royal Bank of Canada | 443,658 | $318.0K | 0.00% | +437,461+7,059.2% | Added |
| DAFNA Capital Management LLC | 437,079 | $312.0K | 0.09% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 405,748 | $289.7K | 0.00% | −1,306,367−76.3% | Reduced |
| LPL Financial LLC | 370,748 | $264.7K | 0.00% | −19,184−4.9% | Reduced |
| Fisher Asset Management, LLC | 352,949 | $252.0K | 0.00% | 00.0% | Unchanged |
| State Street Corp | 342,652 | $244.6K | 0.00% | −1,339,687−79.6% | Reduced |
| Shay Capital LLC | 259,889 | $185.5K | 0.04% | +54,269+26.4% | Added |
| Morgan Stanley | 258,595 | $184.6K | 0.00% | +62,735+32.0% | Added |
| Susquehanna International Group, LLP | 245,206 | $175.1K | 0.00% | +142,864+139.6% | Added |
| Marshall Wace, LLP | 234,431 | $166.4K | 0.00% | +234,431 | New |
| AJU IB Investment Co., Ltd. | 175,000 | $124.9K | 0.14% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 173,477 | $123.8K | 0.00% | −127,930−42.4% | Reduced |
| Northern Trust Corp | 167,734 | $119.7K | 0.00% | −466,189−73.5% | Reduced |
| RBF Capital, LLC | 160,000 | $114.2K | 0.01% | +160,000 | New |
| Ieq Capital, LLC | 123,319 | $88.0K | 0.00% | +48,253+64.3% | Added |
| Qube Research & Technologies Ltd | 115,401 | $82.4K | 0.00% | +115,401 | New |
| Two Sigma Investments, LP | 115,068 | $82.1K | 0.00% | +19,187+20.0% | Added |
| Cerity Partners LLC | 105,437 | $75.3K | 0.00% | +66,372+169.9% | Added |
| Invesco Ltd. | 103,320 | $73.8K | 0.00% | +11,181+12.1% | Added |
| Omers Administration Corp | 95,150 | $67.9K | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 85,509 | $61.0K | 0.00% | +58,731+219.3% | Added |
| Jain Global LLC | 84,472 | $60.3K | 0.00% | +84,472 | New |
| Bank of America Corp | 78,946 | $56.3K | 0.00% | −30,155−27.6% | Reduced |
| Standard Life Aberdeen plc | 69,389 | $49.5K | 0.00% | 00.0% | Unchanged |
| Y-Intercept (Hong Kong) Ltd | 66,591 | $47.5K | 0.00% | +66,591 | New |
| Two Sigma Advisers, LP | 66,300 | $47.3K | 0.00% | −174,600−72.5% | Reduced |
| Point72 Asia (Singapore) Pte. Ltd. | 61,068 | $43.6K | 0.01% | +61,068 | New |
| JustInvest LLC | 60,617 | $43.3K | 0.00% | +38,561+174.8% | Added |
| CWM, LLC | 56,657 | $40.0K | 0.00% | +23,941+73.2% | Added |
| Vontobel Holding Ltd. | 50,000 | $35.7K | 0.00% | 00.0% | Unchanged |
| PEAK6 LLC | 42,612 | $30.4K | 0.00% | +21,306+100.0% | Added |
| Catalyst Funds Management Pty Ltd | 38,500 | $27.5K | 0.01% | +38,500 | New |
| Prudential Financial Inc | 35,500 | $25.3K | 0.00% | −569,080−94.1% | Reduced |
| Citigroup Inc | 28,528 | $20.4K | 0.00% | −36,777−56.3% | Reduced |
| HSBC Holdings PLC | 24,739 | $18.1K | 0.00% | −35,724−59.1% | Reduced |
| Tower Research Capital LLC (TRC) | 24,879 | $17.8K | 0.00% | +11,172+81.5% | Added |
| Resources Investment Advisors, LLC. | 24,099 | $17.2K | 0.00% | 00.0% | Unchanged |
| Wealth Enhancement Advisory Services, LLC | 21,201 | $16.2K | 0.00% | +4,002+23.3% | Added |
| Hudson Bay Capital Management LP | 22,571 | $16.1K | 0.00% | +22,571 | New |
| Advisor Group Holdings, Inc. | 21,149 | $15.0K | 0.00% | −1,854−8.1% | Reduced |
| China Universal Asset Management Co., Ltd. | 16,964 | $12.1K | 0.00% | +424+2.6% | Added |
| Callan Family Office, LLC | 16,177 | $11.5K | 0.00% | +16,177 | New |
| Mariner, LLC | 13,630 | $9.73K | 0.00% | +13,630 | New |
| Axxcess Wealth Management, LLC | 12,907 | $9.21K | 0.00% | 00.0% | Unchanged |
| Bridgeway Capital Management, LLC | 12,900 | $9.21K | 0.00% | 00.0% | Unchanged |
| Ground Swell Capital, LLC | 12,683 | $9.05K | 0.01% | +12,683 | New |
| FMR LLC | 11,639 | $8.31K | 0.00% | −49,910−81.1% | Reduced |
| Pallas Capital Advisors LLC | 11,110 | $7.93K | 0.00% | +11,110 | New |
| Captrust Financial Advisors | 10,998 | $7.85K | 0.00% | +10,998 | New |
| Revolve Wealth Partners, LLC | 10,312 | $7.36K | 0.00% | +10,312 | New |
| Quantinno Capital Management LP | 10,170 | $7.26K | 0.00% | +10,170 | New |
| Lazard Asset Management LLC | 10,947 | $7.00K | 0.00% | +10,947 | New |
| Barclays PLC | 6,618 | $4.72K | 0.00% | −109,668−94.3% | Reduced |
| Cubist Systematic Strategies, LLC | 6,078 | $4.34K | 0.00% | +6,078 | New |
| GWM Advisors LLC | 4,113 | $2.94K | 0.00% | +4,113 | New |
| Gen-Wealth Partners Inc | 4,042 | $2.89K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global Investments Co., Ltd. | 3,263 | $2.33K | 0.00% | +587+21.9% | Added |
| BNP Paribas Arbitrage, SA | 2,398 | $1.71K | 0.00% | −152,837−98.5% | Reduced |
| GF Fund Management Co. Ltd. | 1,982 | $1.42K | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 1,471 | $1.05K | 0.00% | +614+71.6% | Added |
| UMA Financial Services, Inc. | 1,304 | $931 | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 1,259 | $899 | 0.00% | +1,259 | New |
| Accredited Wealth Management, LLC | 1,000 | $714 | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 769 | $549 | 0.00% | +103+15.5% | Added |
| Rise Advisors, LLC | 769 | $549 | 0.00% | +769 | New |
| Rialto Wealth Management, LLC | 707 | $505 | 0.00% | +707 | New |
| Wells Fargo & Company | 693 | $495 | 0.00% | −48,441−98.6% | Reduced |
| Essential Partners LLC | 654 | $467 | 0.00% | +654 | New |
| True Wealth Design, LLC | 559 | $400 | 0.00% | +559 | New |
| Bogart Wealth, LLC | 500 | $357 | 0.00% | 00.0% | Unchanged |
| Raymond James Financial Inc | 500 | $357 | 0.00% | +500 | New |
| Parallel Advisors, LLC | 465 | $332 | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 225 | $161 | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 121 | $87 | 0.00% | +121 | New |
| IFP Advisors, Inc | 78 | $56 | 0.00% | +78 | New |
| Comerica Bank | 49 | $35 | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 20 | $14 | 0.00% | +20 | New |
| SBI Securities Co., Ltd. | 2 | $1 | 0.00% | −1−33.3% | Reduced |
| Caitong International Asset Management Co., Ltd | 1 | $1 | 0.00% | +1 | New |