STRO Sutro Biopharma, Inc.
Sutro Biopharma, Inc. (STRO) Institutional Ownership
What the institutions did with STRO last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| PERCEPTIVE ADVISORS LLC | 1.3M | 7.9% |
| BVF INC/IL | 1.3M | 7.6% |
| Affinity Asset Advisors, LLC | 1.2M | 7.1% |
| BlackRock, Inc. | 1.1M | 6.8% |
| SAMSARA BIOCAPITAL, LLC | 1.1M | 6.4% |
| Kynam Capital Management, LP | 872.6K | 5.3% |
| ORBIMED ADVISORS LLC | 743.9K | 4.5% |
| Balyasny Asset Management L.P. | 711.2K | 4.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | 694.2K | 4.2% |
| EVENTIDE ASSET MANAGEMENT, LLC | 585.3K | 3.6% |
| Velan Capital Investment Management LP | 512.2K | 3.1% |
| Woodline Partners LP | 458.0K | 2.8% |
| ADAR1 Capital Management, LLC | 404.0K | 2.5% |
| GEODE CAPITAL MANAGEMENT, LLC | 389.7K | 2.4% |
| ACADIAN ASSET MANAGEMENT LLC | 373.8K | 2.3% |
| MILLENNIUM MANAGEMENT LLC | 366.0K | 2.2% |
| STATE STREET CORP | 306.0K | 1.9% |
| Merck & Co., Inc. | 272.4K | 1.7% |
| ACUTA CAPITAL PARTNERS, LLC | 270.3K | 1.6% |
| AMERIPRISE FINANCIAL INC | 244.7K | 1.5% |
| Point72 Asset Management, L.P. | 237.8K | 1.4% |
| KVP Capital Advisors, LP | 226.6K | 1.4% |
| UBS Group AG | 208.5K | 1.3% |
| TWO SIGMA INVESTMENTS, LP | 201.7K | 1.2% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 197.6K | 1.2% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| BlackRock, Inc. | Increased | 232.7K | 1.1M | +890.0K |
| RA CAPITAL MANAGEMENT, L.P. | Sold Out | 715.3K | 0 | -715.3K |
| PERCEPTIVE ADVISORS LLC | Increased | 715.3K | 1.3M | +589.5K |
| Point72 Asset Management, L.P. | Reduced | 692.1K | 237.8K | -454.3K |
| STATE STREET CORP | Increased | 52.1K | 306.0K | +253.9K |
| Balyasny Asset Management L.P. | Increased | 465.8K | 711.2K | +245.4K |
| AMERIPRISE FINANCIAL INC | New | 0 | 244.7K | +244.7K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 171.4K | 389.7K | +218.3K |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Sold Out | 200.0K | 0 | -200.0K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New | 0 | 197.6K | +197.6K |
| Opaleye Management Inc. | Sold Out | 190.7K | 0 | -190.7K |
| UBS Group AG | Reduced | 392.9K | 208.5K | -184.4K |
| Nuveen, LLC | New | 0 | 168.0K | +168.0K |
| JPMORGAN CHASE & CO | New | 0 | 159.6K | +159.6K |
| Seven Fleet Capital Management LP | New | 0 | 159.1K | +159.1K |
| MILLENNIUM MANAGEMENT LLC | Increased | 210.4K | 366.0K | +155.6K |
| TWO SIGMA INVESTMENTS, LP | Increased | 65.2K | 201.7K | +136.5K |
| EVENTIDE ASSET MANAGEMENT, LLC | Reduced | 715.3K | 585.3K | -130.0K |
| GOLDMAN SACHS GROUP INC | Increased | 27.2K | 149.2K | +122.0K |
| ADAR1 Capital Management, LLC | Reduced | 524.4K | 404.0K | -120.4K |
| Qube Research & Technologies Ltd | New | 0 | 106.6K | +106.6K |
| Affinity Asset Advisors, LLC | Increased | 1.1M | 1.2M | +103.0K |
| MACKENZIE FINANCIAL CORP | New | 0 | 94.8K | +94.8K |
| NORTHERN TRUST CORP | Increased | 33.2K | 125.9K | +92.8K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 84.9K | 8.4K | -76.5K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.