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.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest 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 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Sold Out | 16.2K | 0 | -16.2K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 473.5K | 488.8K | +15.3K |
| UBS Group AG | Reduced | 30.0K | 15.1K | -14.9K |
| BOOTHBAY FUND MANAGEMENT, LLC | Increased | 46.1K | 60.8K | +14.6K |
| FMR LLC | Increased | 2.8M | 2.8M | +13.9K |
| XTX Topco Ltd | Sold Out | 11.6K | 0 | -11.6K |
| GOLDMAN SACHS GROUP INC | Increased | 62.4K | 73.9K | +11.5K |
| GSA CAPITAL PARTNERS LLP | Reduced | 18.9K | 8.3K | -10.6K |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 16.9K | 6.6K | -10.3K |
| Clearstead Advisors, LLC | Reduced | 26.8K | 16.6K | -10.1K |
| Brevan Howard Capital Management LP | New | 0 | 9.6K | +9.6K |
| Tetragon Partners GP Ltd | Increased | 37.6K | 46.5K | +8.9K |
| FOX RUN MANAGEMENT, L.L.C. | New | 0 | 8.9K | +8.9K |
| RAYMOND JAMES FINANCIAL INC | Increased | 64.2K | 72.7K | +8.5K |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | Reduced | 13.9K | 6.0K | -7.9K |
| ALLIANCEBERNSTEIN L.P. | New | 0 | 7.5K | +7.5K |
| AMERICAN CENTURY COMPANIES INC | Increased | 12.5K | 19.0K | +6.5K |
| STATE STREET CORP | Increased | 213.5K | 219.9K | +6.4K |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | New | 0 | 6.1K | +6.1K |
| Rangeley Capital, LLC | New | 0 | 6.0K | +6.0K |
| Velan Capital Investment Management LP | New | 0 | 6.0K | +6.0K |
| Vanguard Global Advisers, LLC | Increased | 4.0K | 8.8K | +4.8K |
| WELLS FARGO & COMPANY/MN | Increased | 112.7K | 117.4K | +4.8K |
| Russell Investments Group, Ltd. | Increased | 851 | 5.6K | +4.7K |
| KENNEDY CAPITAL MANAGEMENT LLC | Reduced | 286.7K | 282.2K | -4.5K |
| CITIGROUP INC | Increased | 1.1K | 5.5K | +4.4K |
| ALPS ADVISORS INC | Increased | 15.3K | 19.1K | +3.9K |
| JPMORGAN CHASE & CO | Reduced | 58.9K | 55.4K | -3.5K |
| Creative Planning | Reduced | 12.4K | 9.0K | -3.5K |
| Virtus Investment Advisers, LLC | Reduced | 13.8K | 10.8K | -3.0K |
| BARCLAYS PLC | Increased | 6.7K | 9.1K | +2.4K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 2.8K | 5.1K | +2.3K |
| BlackRock, Inc. | Increased | 860.4K | 862.6K | +2.2K |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 29.2K | 31.4K | +2.2K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 268.3K | 270.5K | +2.2K |
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.