TECX Tectonic Therapeutic, Inc.
Tectonic Therapeutic, Inc. (TECX) Institutional Ownership
What the institutions did with TECX 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 |
|---|---|---|
| FMR LLC | 2.8M | 20.3% |
| TCG Crossover Management, LLC | 1.2M | 8.6% |
| Aberdeen Group plc | 1.1M | 8.2% |
| BlackRock, Inc. | 862.6K | 6.2% |
| First Light Asset Management, LLC | 800.7K | 5.7% |
| BAKER BROS. ADVISORS LP | 607.8K | 4.4% |
| 5AM Venture Management, LLC | 606.7K | 4.3% |
| BRAIDWELL LP | 596.9K | 4.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | 488.8K | 3.5% |
| Vestal Point Capital, LP | 425.0K | 3.0% |
| Bollard Group LLC | 303.0K | 2.2% |
| KENNEDY CAPITAL MANAGEMENT LLC | 282.2K | 2.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 270.5K | 1.9% |
| ORBIMED ADVISORS LLC | 226.6K | 1.6% |
| STATE STREET CORP | 219.9K | 1.6% |
| Ikarian Capital, LLC | 205.8K | 1.5% |
| D. E. Shaw & Co., Inc. | 186.6K | 1.3% |
| MARSHALL WACE, LLP | 172.1K | 1.2% |
| MILLENNIUM MANAGEMENT LLC | 165.5K | 1.2% |
| Squarepoint Ops LLC | 145.0K | 1.0% |
| AMERIPRISE FINANCIAL INC | 142.4K | 1.0% |
| WELLS FARGO & COMPANY/MN | 117.4K | 0.8% |
| NORTHERN TRUST CORP | 113.9K | 0.8% |
| Soleus Capital Management, L.P. | 101.7K | 0.7% |
| Woodline Partners LP | 100.0K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| BRAIDWELL LP | Reduced | 847.2K | 596.9K | -250.3K |
| First Light Asset Management, LLC | Increased | 647.7K | 800.7K | +153.0K |
| Opaleye Management Inc. | Sold Out | 123.0K | 0 | -123.0K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 164.1K | 48.0K | -116.1K |
| MILLENNIUM MANAGEMENT LLC | Increased | 58.3K | 165.5K | +107.2K |
| Vestal Point Capital, LP | Increased | 328.0K | 425.0K | +97.0K |
| CITADEL ADVISORS LLC | New | 0 | 90.4K | +90.4K |
| D. E. Shaw & Co., Inc. | Increased | 116.1K | 186.6K | +70.4K |
| Point72 Asset Management, L.P. | Sold Out | 68.6K | 0 | -68.6K |
| JANE STREET GROUP, LLC | New | 0 | 65.8K | +65.8K |
| MARSHALL WACE, LLP | Reduced | 229.6K | 172.1K | -57.5K |
| SECTORAL ASSET MANAGEMENT INC | Increased | 19.1K | 71.0K | +52.0K |
| ExodusPoint Capital Management, LP | Reduced | 83.7K | 35.2K | -48.4K |
| Ikarian Capital, LLC | Increased | 157.5K | 205.8K | +48.3K |
| HRT FINANCIAL LP | New | 0 | 44.5K | +44.5K |
| Prosight Management, LP | Reduced | 79.9K | 39.7K | -40.1K |
| Trexquant Investment LP | New | 0 | 37.0K | +37.0K |
| NORTHERN TRUST CORP | Increased | 78.4K | 113.9K | +35.6K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 63.6K | 94.4K | +30.8K |
| TD Asset Management Inc | Sold Out | 20.4K | 0 | -20.4K |
| Soleus Capital Management, L.P. | Reduced | 121.7K | 101.7K | -20.0K |
| SEI INVESTMENTS CO | Reduced | 36.9K | 17.0K | -19.8K |
| Squarepoint Ops LLC | Reduced | 164.4K | 145.0K | -19.4K |
| Fisher Asset Management, LLC | New | 0 | 19.1K | +19.1K |
| Quadrature Capital Ltd | New | 0 | 18.1K | +18.1K |
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.