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
- 55.5M
- −5.92M (−9.6%) vs. Q1 2025
- Total value
- $39.6M
- −$341.8K (−0.9%) vs. Q1 2025
- New holders
- 31
- 22 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 | $358.3M |
| 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, 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 |
| Ra Capital Management, L.P. | 0 | $0 | 0.00% | −4,434,637−100.0% | Sold out |
| Nuveen, LLC | 0 | $0 | 0.00% | −290,897−100.0% | Sold out |
| Bank of New York Mellon Corp | 0 | $0 | 0.00% | −209,222−100.0% | Sold out |
| Charles Schwab Investment Management Inc | 0 | $0 | 0.00% | −199,901−100.0% | Sold out |
| D. E. Shaw & Co., Inc. | 0 | $0 | 0.00% | −158,037−100.0% | Sold out |
| STRS Ohio | 0 | $0 | 0.00% | −152,800−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −141,229−100.0% | Sold out |
| Panagora Asset Management Inc | 0 | $0 | 0.00% | −140,362−100.0% | Sold out |
| Exchange Traded Concepts, LLC | 0 | $0 | 0.00% | −136,623−100.0% | Sold out |
| Rhumbline Advisers | 0 | $0 | 0.00% | −122,816−100.0% | Sold out |
| Alliancebernstein L.P. | 0 | $0 | 0.00% | −96,370−100.0% | Sold out |
| State of Wyoming | 0 | $0 | 0.00% | −94,932−100.0% | Sold out |
| SG Americas Securities, LLC | 0 | $0 | 0.00% | −84,907−100.0% | Sold out |
| Intech Investment Management LLC | 0 | $0 | 0.00% | −72,540−100.0% | Sold out |
| Alps Advisors Inc | 0 | $0 | 0.00% | −61,267−100.0% | Sold out |
| SEI Investments Co | 0 | $0 | 0.00% | −56,347−100.0% | Sold out |
| Mirae Asset Global ETFs Holdings Ltd. | 0 | $0 | 0.00% | −48,998−100.0% | Sold out |
| Corebridge Financial, Inc. | 0 | $0 | 0.00% | −40,104−100.0% | Sold out |
| Price T Rowe Associates Inc | 0 | $0 | 0.00% | −36,893−100.0% | Sold out |
| Susquehanna Fundamental Investments, LLC | 0 | $0 | 0.00% | −37,956−100.0% | Sold out |
| Voya Investment Management LLC | 0 | $0 | 0.00% | −36,487−100.0% | Sold out |
| Manufacturers Life Insurance Company, The | 0 | $0 | 0.00% | −30,993−100.0% | Sold out |
| UBS Oconnor LLC | 0 | $0 | 0.00% | −28,278−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −25,166−100.0% | Sold out |
| Oxford Asset Management LLP | 0 | $0 | 0.00% | −22,850−100.0% | Sold out |
| ProShare Advisors LLC | 0 | $0 | 0.00% | −21,441−100.0% | Sold out |
| CIBC World Markets Corp | 0 | $0 | 0.00% | −18,164−100.0% | Sold out |
| State Board of Administration of Florida Retirement System | 0 | $0 | 0.00% | −17,273−100.0% | Sold out |
| Prime Capital Investment Advisors, LLC | 0 | $0 | 0.00% | −17,111−100.0% | Sold out |
| Police & Firemen's Retirement System of New Jersey | 0 | $0 | 0.00% | −16,570−100.0% | Sold out |
| Zacks Investment Management | 0 | $0 | 0.00% | −15,143−100.0% | Sold out |
| New York State Common Retirement Fund | 0 | $0 | 0.00% | −13,625−100.0% | Sold out |
| Diversified Trust Co | 0 | $0 | 0.00% | −12,610−100.0% | Sold out |
| Sherbrooke Park Advisers LLC | 0 | $0 | 0.00% | −10,508−100.0% | Sold out |
| Russell Investments Group, Ltd. | 0 | $0 | 0.00% | −9,258−100.0% | Sold out |
| Legal & General Group Plc | 0 | $0 | 0.00% | −7,073−100.0% | Sold out |
| Ameritas Investment Partners, Inc. | 0 | $0 | 0.00% | −6,622−100.0% | Sold out |
| California State Teachers Retirement System | 0 | $0 | 0.00% | −5,932−100.0% | Sold out |
| Amalgamated Bank | 0 | $0 | 0.00% | −2,825−100.0% | Sold out |
| Sterling Capital Management LLC | 0 | $0 | 0.00% | −1,471−100.0% | Sold out |
| Concord Wealth Partners | 0 | $0 | 0.00% | −1,000−100.0% | Sold out |
| AdvisorNet Financial, Inc | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| Rothschild Investment LLC | 0 | $0 | 0.00% | −300−100.0% | Sold out |