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, Q3 2025
Institutional positions in Sutro Biopharma, Inc. as of Sep 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
- 88
- −13 vs. Q2 2025
- Shares held
- 53.5M
- −2.31M (−4.1%) vs. Q2 2025
- Total value
- $46.4M
- +$6.61M (+16.6%) vs. Q2 2025
- New holders
- 10
- 19 more added
- Sold out
- 23
- 34 more reduced
Compare with Q2 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, Q3 2025
Shares, value and share of portfolio for each institution holding Sutro Biopharma, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Suvretta Capital Management, LLC | 6,488,324 | $5.63M | 0.17% | 00.0% | Unchanged |
| Kynam Capital Management, LP | 5,088,099 | $4.42M | 0.33% | 00.0% | Unchanged |
| Millennium Management LLC | 4,524,350 | $3.93M | 0.00% | −207,893−4.4% | Reduced |
| Vanguard Group Inc | 3,682,986 | $3.20M | 0.00% | −432,264−10.5% | Reduced |
| Acadian Asset Management LLC | 3,389,322 | $2.94M | 0.01% | +347,084+11.4% | Added |
| Velan Capital Investment Management LP | 3,120,000 | $2.71M | 2.54% | +60,000+2.0% | Added |
| Tang Capital Management LLC | 2,828,717 | $2.46M | 0.09% | +267,131+10.4% | Added |
| Merck & Co., Inc. | 2,723,509 | $2.37M | 1.04% | 00.0% | Unchanged |
| Vestal Point Capital, LP | 2,600,000 | $2.26M | 0.10% | 00.0% | Unchanged |
| Eversept Partners, LP | 2,291,313 | $1.99M | 0.15% | −9480.0% | Reduced |
| Samsara BioCapital, LLC | 2,196,814 | $1.91M | 0.25% | 00.0% | Unchanged |
| Adage Capital Partners GP, L.L.C. | 2,000,000 | $1.74M | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 1,845,839 | $1.60M | 0.00% | +226,955+14.0% | Added |
| BlackRock, Inc. | 1,687,880 | $1.47M | 0.00% | −419,128−19.9% | Reduced |
| Renaissance Technologies LLC | 1,424,797 | $1.24M | 0.00% | +511,600+56.0% | Added |
| Geode Capital Management, LLC | 820,948 | $713.2K | 0.00% | +4,033+0.5% | Added |
| Affinity Asset Advisors, LLC | 752,722 | $653.7K | 0.06% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 445,750 | $387.1K | 0.00% | +445,750 | New |
| DAFNA Capital Management LLC | 437,079 | $379.6K | 0.09% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 396,785 | $344.6K | 0.00% | +281,717+244.8% | Added |
| AQR Capital Management LLC | 354,449 | $307.8K | 0.00% | −658,267−65.0% | Reduced |
| Fisher Asset Management, LLC | 352,949 | $306.5K | 0.00% | 00.0% | Unchanged |
| State Street Corp | 342,652 | $297.6K | 0.00% | 00.0% | Unchanged |
| Shay Capital LLC | 312,051 | $271.0K | 0.05% | +52,162+20.1% | Added |
| Royal Bank of Canada | 258,991 | $225.0K | 0.00% | −184,667−41.6% | Reduced |
| Morgan Stanley | 241,885 | $210.1K | 0.00% | −16,710−6.5% | Reduced |
| Two Sigma Advisers, LP | 239,400 | $207.9K | 0.00% | +173,100+261.1% | Added |
| Dimensional Fund Advisors LP | 197,516 | $171.5K | 0.00% | −430,957−68.6% | Reduced |
| AJU IB Investment Co., Ltd. | 175,000 | $153.1K | 0.13% | 00.0% | Unchanged |
| Gsa Capital Partners LLP | 174,843 | $152.0K | 0.01% | +174,843 | New |
| RBF Capital, LLC | 152,714 | $132.6K | 0.01% | −7,286−4.6% | Reduced |
| JPMorgan Chase & Co | 152,316 | $132.3K | 0.00% | −21,161−12.2% | Reduced |
| LPL Financial LLC | 142,883 | $124.1K | 0.00% | −227,865−61.5% | Reduced |
| Invesco Ltd. | 134,919 | $117.2K | 0.00% | +31,599+30.6% | Added |
| Northern Trust Corp | 122,115 | $106.0K | 0.00% | −45,619−27.2% | Reduced |
| Bank of America Corp | 119,434 | $103.7K | 0.00% | +40,488+51.3% | Added |
| Marshall Wace, LLP | 118,443 | $103.0K | 0.00% | −115,988−49.5% | Reduced |
| Susquehanna International Group, LLP | 103,592 | $90.0K | 0.00% | −141,614−57.8% | Reduced |
| Omers Administration Corp | 95,150 | $82.6K | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 88,111 | $76.5K | 0.00% | −317,637−78.3% | Reduced |
| Citigroup Inc | 75,377 | $65.5K | 0.00% | +46,849+164.2% | Added |
| Standard Life Aberdeen plc | 69,389 | $60.3K | 0.00% | 00.0% | Unchanged |
| Cerity Partners LLC | 68,061 | $59.1K | 0.00% | −37,376−35.4% | Reduced |
| Qube Research & Technologies Ltd | 65,226 | $56.6K | 0.00% | −50,175−43.5% | Reduced |
| Catalyst Funds Management Pty Ltd | 63,776 | $55.4K | 0.01% | +25,276+65.7% | Added |
| JustInvest LLC | 60,184 | $52.3K | 0.00% | −433−0.7% | Reduced |
| Ieq Capital, LLC | 59,752 | $51.9K | 0.00% | −63,567−51.5% | Reduced |
| Vontobel Holding Ltd. | 50,000 | $43.4K | 0.00% | 00.0% | Unchanged |
| Bridgeway Capital Management, LLC | 42,900 | $37.3K | 0.00% | +30,000+232.6% | Added |
| Prudential Financial Inc | 35,500 | $30.8K | 0.00% | 00.0% | Unchanged |
| Bluefin Capital Management, LLC | 34,934 | $30.3K | 0.01% | +34,934 | New |
| Point72 Asia (Singapore) Pte. Ltd. | 31,026 | $26.9K | 0.00% | −30,042−49.2% | Reduced |
| CWM, LLC | 25,236 | $22.0K | 0.00% | −31,421−55.5% | Reduced |
| Tower Research Capital LLC (TRC) | 24,017 | $20.9K | 0.00% | −862−3.5% | Reduced |
| Advisor Group Holdings, Inc. | 21,149 | $18.0K | 0.00% | 00.0% | Unchanged |
| XTX Topco Ltd | 19,131 | $16.6K | 0.00% | +19,131 | New |
| China Universal Asset Management Co., Ltd. | 14,860 | $12.9K | 0.00% | −2,104−12.4% | Reduced |
| Ground Swell Capital, LLC | 14,345 | $12.5K | 0.03% | +1,662+13.1% | Added |
| FMR LLC | 11,864 | $10.3K | 0.00% | +225+1.9% | Added |
| Quantinno Capital Management LP | 11,139 | $9.67K | 0.00% | +969+9.5% | Added |
| Revolve Wealth Partners, LLC | 11,002 | $9.55K | 0.00% | +690+6.7% | Added |
| FNY Investment Advisers, LLC | 10,000 | $8.00K | 0.00% | +10,000 | New |
| SRS Capital Advisors, Inc. | 3,843 | $3.34K | 0.00% | +3,843 | New |
| Mirae Asset Global Investments Co., Ltd. | 3,277 | $2.85K | 0.00% | +14+0.4% | Added |
| Barclays PLC | 2,767 | $2.40K | 0.00% | −3,851−58.2% | Reduced |
| Rockefeller Capital Management L.P. | 2,365 | $2.05K | 0.00% | +2,365 | New |
| GF Fund Management Co. Ltd. | 1,918 | $1.67K | 0.00% | −64−3.2% | Reduced |
| BNP Paribas Arbitrage, SA | 1,741 | $1.51K | 0.00% | −657−27.4% | Reduced |
| UMA Financial Services, Inc. | 1,304 | $1.13K | 0.00% | 00.0% | Unchanged |
| Accredited Wealth Management, LLC | 5 | $869 | 0.00% | −995−99.5% | Reduced |
| Rise Advisors, LLC | 769 | $668 | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 614 | $533 | 0.00% | −155−20.2% | Reduced |
| Bare Financial Services, Inc | 549 | $477 | 0.00% | +549 | New |
| Bogart Wealth, LLC | 500 | $434 | 0.00% | 00.0% | Unchanged |
| Parallel Advisors, LLC | 465 | $404 | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 454 | $394 | 0.00% | −1,017−69.1% | Reduced |
| Nisa Investment Advisors, LLC | 440 | $382 | 0.00% | −819−65.1% | Reduced |
| Jones Financial Companies LLLP | 250 | $222 | 0.00% | +250 | New |
| HighMark Wealth Management LLC | 225 | $195 | 0.00% | 00.0% | Unchanged |
| Essential Partners LLC | 212 | $184 | 0.00% | −442−67.6% | Reduced |
| Advisory Services Network, LLC | 147 | $128 | 0.00% | +147 | New |
| Comerica Bank | 49 | $42 | 0.00% | 00.0% | Unchanged |
| True Wealth Design, LLC | 45 | $40 | 0.00% | −514−91.9% | Reduced |
| IFP Advisors, Inc | 21 | $18 | 0.00% | −57−73.1% | Reduced |
| Group One Trading, L.P. | 20 | $17 | 0.00% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 10 | $9 | 0.00% | −6,068−99.8% | Reduced |
| SBI Securities Co., Ltd. | 2 | $2 | 0.00% | 00.0% | Unchanged |
| Avion Wealth | 716 | $0 | 0.00% | 00.0% | Unchanged |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −688,850−100.0% | Sold out |
| Cantor Fitzgerald, L. P. | 0 | $0 | 0.00% | −500,000−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −85,509−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −84,472−100.0% | Sold out |
| Y-Intercept (Hong Kong) Ltd | 0 | $0 | 0.00% | −66,591−100.0% | Sold out |
| PEAK6 LLC | 0 | $0 | 0.00% | −42,612−100.0% | Sold out |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −24,739−100.0% | Sold out |
| Resources Investment Advisors, LLC. | 0 | $0 | 0.00% | −24,099−100.0% | Sold out |
| Wealth Enhancement Advisory Services, LLC | 0 | $0 | 0.00% | −21,201−100.0% | Sold out |
| Hudson Bay Capital Management LP | 0 | $0 | 0.00% | −22,571−100.0% | Sold out |
| Callan Family Office, LLC | 0 | $0 | 0.00% | −16,177−100.0% | Sold out |
| Mariner, LLC | 0 | $0 | 0.00% | −13,630−100.0% | Sold out |