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
- 53.4M
- −2.14M (−3.9%) vs. Q2 2025
- Total value
- $46.4M
- +$6.72M (+16.9%) vs. Q2 2025
- New holders
- 10
- 20 more added
- Sold out
- 23
- 33 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 | $358.3M |
| Q4 2025 | 63 | $64.8M |
| Q3 2025 | 88 | $46.4M |
| Q2 2025 | 101 | $39.6M |
| Q1 2025 | 113 | $40.0M |
| Q4 2024 | 123 | $117.6M |
| Q3 2024 | 130 | $216.4M |
| Q2 2024 | 119 | $185.1M |
| Q1 2024 | 117 | $301.7M |
| Q4 2023 | 114 | $238.7M |
| Q3 2023 | 109 | $194.3M |
| Q2 2023 | 120 | $251.6M |
| Q1 2023 | 116 | $247.5M |
| Q4 2022 | 119 | $403.7M |
| Q3 2022 | 113 | $279.6M |
| Q2 2022 | 115 | $240.9M |
| Q1 2022 | 114 | $342.2M |
| Q4 2021 | 117 | $593.2M |
| 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 |
|---|---|---|---|---|---|
| Avion Wealth | 716 | $0 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 2 | $2 | 0.00% | 00.0% | Unchanged |
| Cubist Systematic Strategies, LLC | 10 | $9 | 0.00% | −6,068−99.8% | Reduced |
| Group One Trading, L.P. | 20 | $17 | 0.00% | 00.0% | Unchanged |
| IFP Advisors, Inc | 21 | $18 | 0.00% | −57−73.1% | Reduced |
| True Wealth Design, LLC | 45 | $40 | 0.00% | −514−91.9% | Reduced |
| Comerica Bank | 49 | $42 | 0.00% | 00.0% | Unchanged |
| Advisory Services Network, LLC | 147 | $128 | 0.00% | +147 | New |
| Essential Partners LLC | 212 | $184 | 0.00% | −442−67.6% | Reduced |
| HighMark Wealth Management LLC | 225 | $195 | 0.00% | 00.0% | Unchanged |
| Jones Financial Companies LLLP | 250 | $222 | 0.00% | +250 | New |
| Nisa Investment Advisors, LLC | 440 | $382 | 0.00% | −819−65.1% | Reduced |
| EverSource Wealth Advisors, LLC | 454 | $394 | 0.00% | −1,017−69.1% | Reduced |
| Parallel Advisors, LLC | 465 | $404 | 0.00% | 00.0% | Unchanged |
| Bogart Wealth, LLC | 500 | $434 | 0.00% | 00.0% | Unchanged |
| Bare Financial Services, Inc | 549 | $477 | 0.00% | +549 | New |
| The PNC Financial Services Group, Inc. | 614 | $533 | 0.00% | −155−20.2% | Reduced |
| Rise Advisors, LLC | 769 | $668 | 0.00% | 00.0% | Unchanged |
| Accredited Wealth Management, LLC | 5 | $869 | 0.00% | −995−99.5% | Reduced |
| UMA Financial Services, Inc. | 1,304 | $1.13K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 1,741 | $1.51K | 0.00% | −657−27.4% | Reduced |
| GF Fund Management Co. Ltd. | 1,918 | $1.67K | 0.00% | −64−3.2% | Reduced |
| Rockefeller Capital Management L.P. | 2,365 | $2.05K | 0.00% | +2,365 | New |
| Barclays PLC | 2,767 | $2.40K | 0.00% | −3,851−58.2% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 3,277 | $2.85K | 0.00% | +14+0.4% | Added |
| SRS Capital Advisors, Inc. | 3,843 | $3.34K | 0.00% | +3,843 | New |
| FNY Investment Advisers, LLC | 10,000 | $8.00K | 0.00% | +10,000 | New |
| Revolve Wealth Partners, LLC | 11,002 | $9.55K | 0.00% | +690+6.7% | Added |
| Quantinno Capital Management LP | 11,139 | $9.67K | 0.00% | +969+9.5% | Added |
| FMR LLC | 11,864 | $10.3K | 0.00% | +225+1.9% | Added |
| Ground Swell Capital, LLC | 14,345 | $12.5K | 0.03% | +1,662+13.1% | Added |
| China Universal Asset Management Co., Ltd. | 14,860 | $12.9K | 0.00% | −2,104−12.4% | Reduced |
| XTX Topco Ltd | 19,131 | $16.6K | 0.00% | +19,131 | New |
| Advisor Group Holdings, Inc. | 21,149 | $18.0K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 24,017 | $20.9K | 0.00% | −862−3.5% | Reduced |
| CWM, LLC | 25,236 | $22.0K | 0.00% | −31,421−55.5% | Reduced |
| Point72 Asia (Singapore) Pte. Ltd. | 31,026 | $26.9K | 0.00% | −30,042−49.2% | Reduced |
| Bluefin Capital Management, LLC | 34,934 | $30.3K | 0.01% | +34,934 | New |
| Prudential Financial Inc | 35,500 | $30.8K | 0.00% | 00.0% | Unchanged |
| Bridgeway Capital Management, LLC | 42,900 | $37.3K | 0.00% | +30,000+232.6% | Added |
| Vontobel Holding Ltd. | 50,000 | $43.4K | 0.00% | 00.0% | Unchanged |
| Ieq Capital, LLC | 59,752 | $51.9K | 0.00% | −63,567−51.5% | Reduced |
| JustInvest LLC | 60,184 | $52.3K | 0.00% | −433−0.7% | Reduced |
| Catalyst Funds Management Pty Ltd | 63,776 | $55.4K | 0.01% | +25,276+65.7% | Added |
| Qube Research & Technologies Ltd | 65,226 | $56.6K | 0.00% | −50,175−43.5% | Reduced |
| Cerity Partners LLC | 68,061 | $59.1K | 0.00% | −37,376−35.4% | Reduced |
| Standard Life Aberdeen plc | 69,389 | $60.3K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 75,377 | $65.5K | 0.00% | +46,849+164.2% | Added |
| JPMorgan Chase & Co | 76,158 | $66.1K | 0.00% | −97,319−56.1% | Reduced |
| Goldman Sachs Group Inc | 88,111 | $76.5K | 0.00% | −317,637−78.3% | Reduced |
| Omers Administration Corp | 95,150 | $82.6K | 0.00% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 103,592 | $90.0K | 0.00% | −141,614−57.8% | Reduced |
| Marshall Wace, LLP | 118,443 | $103.0K | 0.00% | −115,988−49.5% | Reduced |
| Bank of America Corp | 119,434 | $103.7K | 0.00% | +40,488+51.3% | Added |
| Northern Trust Corp | 122,115 | $106.0K | 0.00% | −45,619−27.2% | Reduced |
| Invesco Ltd. | 134,919 | $117.2K | 0.00% | +31,599+30.6% | Added |
| LPL Financial LLC | 142,883 | $124.1K | 0.00% | −227,865−61.5% | Reduced |
| RBF Capital, LLC | 152,714 | $132.6K | 0.01% | −7,286−4.6% | Reduced |
| Gsa Capital Partners LLP | 174,843 | $152.0K | 0.01% | +174,843 | New |
| AJU IB Investment Co., Ltd. | 175,000 | $153.1K | 0.13% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 197,516 | $171.5K | 0.00% | −430,957−68.6% | Reduced |
| Two Sigma Advisers, LP | 239,400 | $207.9K | 0.00% | +173,100+261.1% | Added |
| Morgan Stanley | 241,885 | $210.1K | 0.00% | −16,710−6.5% | Reduced |
| Royal Bank of Canada | 258,991 | $225.0K | 0.00% | +37,162+16.8% | Added |
| Shay Capital LLC | 312,051 | $271.0K | 0.05% | +52,162+20.1% | Added |
| State Street Corp | 342,652 | $297.6K | 0.00% | 00.0% | Unchanged |
| Fisher Asset Management, LLC | 352,949 | $306.5K | 0.00% | 00.0% | Unchanged |
| AQR Capital Management LLC | 354,449 | $307.8K | 0.00% | −658,267−65.0% | Reduced |
| Two Sigma Investments, LP | 396,785 | $344.6K | 0.00% | +281,717+244.8% | Added |
| DAFNA Capital Management LLC | 437,079 | $379.6K | 0.09% | 00.0% | Unchanged |
| Jacobs Levy Equity Management, Inc | 445,750 | $387.1K | 0.00% | +445,750 | New |
| Affinity Asset Advisors, LLC | 752,722 | $653.7K | 0.06% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 820,948 | $713.2K | 0.00% | +4,033+0.5% | Added |
| Renaissance Technologies LLC | 1,424,797 | $1.24M | 0.00% | +511,600+56.0% | Added |
| BlackRock, Inc. | 1,687,880 | $1.47M | 0.00% | −419,128−19.9% | Reduced |
| UBS Group AG | 1,845,839 | $1.60M | 0.00% | +226,955+14.0% | Added |
| Adage Capital Partners GP, L.L.C. | 2,000,000 | $1.74M | 0.00% | 00.0% | Unchanged |
| Samsara BioCapital, LLC | 2,196,814 | $1.91M | 0.25% | 00.0% | Unchanged |
| Eversept Partners, LP | 2,291,313 | $1.99M | 0.15% | −9480.0% | Reduced |
| Vestal Point Capital, LP | 2,600,000 | $2.26M | 0.10% | 00.0% | Unchanged |
| Merck & Co., Inc. | 2,723,509 | $2.37M | 1.04% | 00.0% | Unchanged |
| Tang Capital Management LLC | 2,828,717 | $2.46M | 0.09% | +267,131+10.4% | Added |
| Velan Capital Investment Management LP | 3,120,000 | $2.71M | 2.54% | +60,000+2.0% | Added |
| Acadian Asset Management LLC | 3,389,322 | $2.94M | 0.01% | +347,084+11.4% | Added |
| Vanguard Group Inc | 3,682,986 | $3.20M | 0.00% | −432,264−10.5% | Reduced |
| Millennium Management LLC | 4,524,350 | $3.93M | 0.00% | −207,893−4.4% | Reduced |
| Kynam Capital Management, LP | 5,088,099 | $4.42M | 0.33% | 00.0% | Unchanged |
| Suvretta Capital Management, LLC | 6,488,324 | $5.63M | 0.17% | 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 |
| 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 |
| PEAK6 LLC | 0 | $0 | 0.00% | −21,306−100.0% | 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 |