Sutro BiopharmaSTRO
13F holders, Q1 2026 (March 31)71holders +15
21new positions
7sold out
6famous investors
$24.91avg. 13F price*
At the end of Q1 2026, 71 institutions reported holding Sutro Biopharma Inc. (STRO) in their 13F filings, up 15 from Q4 2025. 21 opened new positions and 7 sold out. The largest holders were BVF Inc. ($31.2M), Affinity Asset Advisors, LLC ($26.6M) and Samsara Biocapital, LLC ($26.5M). 6 famous investors held it, including Steve Cohen (0.0% of Point72 Asset Management's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Sutro Biopharma Inc.
- CUSIP
- 869367201
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 21 | $129.1M |
| Exits | 7 | $5.6M |
All 13F filers, Q4 2025 → Q1 2026: 9,277,014 shares bought and 919,750 shares sold, net +8,357,264 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 71 holders
| BVF Inc. | 0.99% | New | 1,251,788 | $31.2M |
| Affinity Asset Advisors, LLC | 1.59% | Add +42.9% | 1,069,519 | $26.6M |
| Samsara Biocapital, LLC | 2.57% | Add +419.7% | 1,062,872 | $26.5M |
| Kynam Capital Management, LP | 1.38% | Add +81.9% | 872,558 | $21.7M |
| Orbimed Advisors LLC | 0.45% | New | 801,144 | $20.0M |
| Vanguard Capital Management LLC | 0.00% | — | 720,442 | $17.9M |
| Perceptive Advisors LLC | 0.35% | New | 715,307 | $17.8M |
| Eventide Asset Management, LLC | 0.29% | New | 715,307 | $17.8M |
| Ra Capital Management, L.P. | 0.19% | New | 715,307 | $17.8M |
| Point72 Asset Management | 0.03% | Add +286.5% | 692,111 | $17.2M |
| ADAR1 Capital Management, LLC | 0.79% | Add +681.9% | 524,441 | $13.1M |
| Velan Capital Investment Management LP | 7.99% | Add +64.2% | 512,160 | $12.8M |
| Balyasny Asset Management L.P. | 0.02% | Add +102.5% | 465,792 | $11.6M |
| Woodline Partners LP | 0.04% | New | 457,441 | $11.4M |
| UBS Group AG | 0.00% | Add +4892.0% | 392,871 | $9.8M |
| Acadian Asset Management LLC | 0.01% | Reduce -0.6% | 335,813 | $8.4M |
| Acuta Capital Partners, LLC | 4.77% | Add +299.4% | 269,425 | $6.7M |
| BlackRock, Inc. | 0.00% | Add +98.1% | 232,684 | $5.8M |
| KVP Capital Advisors, LP | 4.22% | New | 226,575 | $5.6M |
| Marshall Wace, LLP | 0.01% | Add +160.0% | 222,634 | $5.5M |
| Millennium Management | 0.00% | Reduce -49.7% | 210,378 | $5.2M |
| Adage Capital Partners Gp, L.L.C. | 0.01% | No change | 200,000 | $5.0M |
| Opaleye Management Inc. | 0.63% | No change | 190,671 | $4.7M |
| Geode Capital Management, LLC | 0.00% | Add +104.1% | 171,386 | $4.3M |
| Citadel Advisors | 0.00% | Add +266.3% | 117,537 | $2.9M |
| Renaissance Technologies | 0.00% | Reduce -20.4% | 97,824 | $2.4M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 94,838 | $2.4M |
| Susquehanna International Group, LLP | 0.00% | New | 84,902 | $2.1M |
| Eversept Partners, LP | 0.12% | Reduce -62.2% | 73,161 | $1.8M |
| Burkehill Global Management, LP | 0.09% | New | 71,530 | $1.8M |
| Two Sigma Investments, LP | 0.00% | Add +40.2% | 65,176 | $1.6M |
| State Street Corp. | 0.00% | Add +52.1% | 52,118 | $1.3M |
| Fisher Asset Management | 0.00% | Reduce -0.0% | 35,295 | $879K |
| Trexquant Investment LP | 0.01% | New | 34,343 | $855K |
| Northern Trust Corp. | 0.00% | Add +130.7% | 33,166 | $826K |
| Jane Street Group, LLC | 0.00% | Add +21.0% | 27,760 | $692K |
| Goldman Sachs Group Inc. | 0.00% | Add +73.5% | 27,187 | $677K |
| Gsa Capital Partners LLP | 0.04% | Reduce -71.0% | 25,822 | $643K |
| Stempoint Capital LP | 0.11% | New | 23,295 | $580K |
| Bank of America Corp. | 0.00% | Add +348.1% | 18,873 | $470K |
| Citigroup Inc. | 0.00% | Add +1706.8% | 18,845 | $469K |
| Brevan Howard Capital Management LP | 0.00% | New | 18,791 | $468K |
| Invesco Ltd. | 0.00% | Add +1.1% | 17,165 | $428K |
| RBF Capital, LLC | 0.02% | No change | 15,272 | $380K |
| Hudson Bay Capital Management LP | 0.00% | New | 14,768 | $368K |
| Sigma Planning Corp | 0.01% | New | 12,520 | $312K |
| Jump Financial, LLC | 0.01% | New | 12,385 | $309K |
| Charles Schwab Investment Management Inc. | 0.00% | New | 10,577 | $263K |
| Morgan Stanley | 0.00% | Reduce -33.9% | 10,529 | $262K |
| OMERS ADMINISTRATION Corp | 0.00% | Reduce -21.1% | 8,700 | $217K |
| AQR Capital Management | 0.00% | Reduce -52.3% | 8,605 | $214K |
| XTX Topco Ltd | 0.00% | New | 8,203 | $204K |
| Persistent Asset Partners Ltd | 0.07% | New | 7,411 | $185K |
| State of Tennessee, Department of Treasury | 0.00% | No change | 7,400 | $184K |
| Vanguard Global Advisers, LLC | 0.00% | — | 7,182 | $179K |
| Osaic Holdings, Inc. | 0.00% | Reduce -4.3% | 1,280 | $32K |
| FMR LLC | 0.00% | Reduce -5.2% | 1,050 | $26K |
| Cwm, LLC | 0.00% | Reduce -34.4% | 983 | $24K |
| FNY Investment Advisers, LLC | 0.01% | No change | 1,000 | $24K |
| Owl Creek Wealth Partners LLC | 0.00% | — | 491 | $12K |
| Physician Wealth Advisors, Inc. | 0.00% | No change | 182 | $5K |
| Barclays PLC | 0.00% | New | 139 | $3K |
| BNP Paribas Financial Markets | 0.00% | No change | 111 | $3K |
| PNC Financial Services Group, Inc. | 0.00% | No change | 62 | $2K |
| Simplex Trading, LLC | 0.00% | New | 62 | $2K |
| Nisa Investment Advisors, LLC | 0.00% | No change | 44 | $1K |
| Avion Wealth | 0.00% | No change | 72 | $1K |
| HighMark Wealth Management LLC | 0.00% | No change | 23 | $572 |
| Arax Advisory Partners | 0.00% | Add +1266.7% | 41 | $75 |
| Fifth Third Bancorp | 0.00% | New | 2 | $50 |
| Royal Bank of Canada | 0.00% | Add +9.1% | 12 | $0 |
"% of holder's portfolio" is STRO's weight in each manager's 13F, not the share of Sutro Biopharma Inc. the manager owns.