Tectonic TherapeuticTECX
13F holders, Q4 2025 (December 31)105holders +6
28new positions
23sold out
4famous investors
$20.86avg. 13F price*
At the end of Q4 2025, 105 institutions reported holding Tectonic Therapeutic Inc. (TECX) in their 13F filings, up 6 from Q3 2025. 28 opened new positions and 23 sold out. The largest holders were FMR LLC ($58.6M), Aberdeen Group plc ($23.8M) and Braidwell LP ($19.3M). 4 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 Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Tectonic Therapeutic Inc.
- CUSIP
- 878972108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 28 | $35.8M |
| Exits | 23 | $33.5M |
All 13F filers, Q3 2025 → Q4 2025: 4,179,765 shares bought and 2,555,851 shares sold, net +1,623,914 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 105 holders
| FMR LLC | 0.00% | Add +0.0% | 2,807,442 | $58.6M |
| Aberdeen Group plc | 0.04% | Add +220.6% | 1,141,824 | $23.8M |
| Braidwell LP | 0.74% | Add +25.9% | 927,524 | $19.3M |
| Baker Bros. Advisors LP | 0.11% | Add +803.4% | 903,400 | $18.8M |
| BlackRock, Inc. | 0.00% | Add +3.2% | 854,363 | $17.8M |
| 5AM Venture Management, LLC | 3.98% | Add +18.6% | 606,660 | $12.7M |
| Vanguard Group Inc. | 0.00% | Add +5.3% | 599,898 | $12.5M |
| Orbimed Advisors LLC | 0.25% | New | 574,600 | $12.0M |
| Point72 Asset Management | 0.02% | Add +16.7% | 492,332 | $10.3M |
| Vestal Point Capital, LP | 0.25% | New | 328,000 | $6.8M |
| Citadel Advisors | 0.00% | Add +6.4% | 317,617 | $6.6M |
| Bollard Group LLC | 0.17% | No change | 302,953 | $6.3M |
| Millennium Management | 0.00% | Add +26.3% | 300,820 | $6.3M |
| Geode Capital Management, LLC | 0.00% | Reduce -2.1% | 263,560 | $5.5M |
| Pale Fire Capital SE | 0.70% | Add +0.5% | 261,026 | $5.4M |
| Prosight Management, LP | 1.01% | Reduce -38.0% | 235,000 | $4.9M |
| Opaleye Management Inc. | 0.59% | New | 214,747 | $4.5M |
| Kennedy Capital Management LLC | 0.09% | Add +0.2% | 209,225 | $4.4M |
| State Street Corp. | 0.00% | Add +26.3% | 209,125 | $4.4M |
| Woodline Partners LP | 0.02% | No change | 200,000 | $4.2M |
| Squarepoint Ops LLC | 0.01% | Add +205.1% | 199,646 | $4.2M |
| Susquehanna International Group, LLP | 0.00% | New | 151,713 | $3.2M |
| Wells Fargo & Company | 0.00% | Add +17.5% | 120,411 | $2.5M |
| D. E. Shaw & Co. | 0.00% | New | 120,250 | $2.5M |
| ExodusPoint Capital Management, LP | 0.03% | Add +754.2% | 111,188 | $2.3M |
| Morgan Stanley | 0.00% | Reduce -9.8% | 94,435 | $2.0M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -4.3% | 92,703 | $1.9M |
| Kotler Kevin | 1.23% | — | 80,000 | $1.7M |
| Knott David M Jr | 0.71% | No change | 74,000 | $1.5M |
| Northern Trust Corp. | 0.00% | Reduce -13.2% | 72,255 | $1.5M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Add +63.3% | 71,657 | $1.5M |
| Gsa Capital Partners LLP | 0.11% | New | 63,276 | $1.3M |
| Raymond James Financial Inc. | 0.00% | Add +5.1% | 54,601 | $1.1M |
| PFM Health Sciences, LP | 0.09% | New | 42,724 | $891K |
| Sectoral Asset Management Inc. | 0.71% | Reduce -78.1% | 42,255 | $881K |
| Jump Financial, LLC | 0.01% | New | 39,500 | $824K |
| Schonfeld Strategic Advisors LLC | 0.00% | New | 39,109 | $816K |
| Wellington Management Group LLP | 0.00% | Add +0.1% | 37,379 | $780K |
| Aldebaran Capital, LLC | 0.70% | Reduce -3.0% | 37,353 | $779K |
| Charles Schwab Investment Management Inc. | 0.00% | Add +0.3% | 32,461 | $677K |
| UBS Group AG | 0.00% | Reduce -53.0% | 31,215 | $651K |
| Marshall Wace, LLP | 0.00% | Add +23.3% | 30,918 | $645K |
| ADAR1 Capital Management, LLC | 0.05% | Reduce -46.4% | 30,007 | $626K |
| BIT Capital GmbH | 0.03% | New | 30,000 | $626K |
| Monimus Capital Management, LP | 0.37% | Add +11.3% | 26,594 | $555K |
| Bank of New York Mellon Corp | 0.00% | Reduce -1.1% | 25,858 | $539K |
| Barclays PLC | 0.00% | Add +24.9% | 22,443 | $468K |
| Aquatic Capital Management LLC | 0.01% | New | 22,262 | $464K |
| Jane Street Group, LLC | 0.00% | Reduce -32.7% | 19,321 | $403K |
| AlphaQuest LLC | 0.02% | Add +149.2% | 18,187 | $379K |
| Alps Advisors Inc. | 0.00% | New | 15,369 | $321K |
| Sei Investments Co. | 0.00% | New | 15,251 | $318K |
| Nuveen, LLC | 0.00% | No change | 14,304 | $298K |
| Rhumbline Advisers | 0.00% | Reduce -11.2% | 14,196 | $296K |
| Virtus Investment Advisers, LLC | 0.08% | Add +165.5% | 13,462 | $281K |
| Palumbo Wealth Management LLC | 0.07% | New | 13,046 | $272K |
| Marex Group Ltd | 0.00% | New | 12,501 | $261K |
| Clarius Group, LLC | 0.01% | No change | 10,130 | $211K |
| Dimensional Fund Advisors LP | 0.00% | New | 10,075 | $210K |
| Quadrature Capital Ltd | 0.00% | Reduce -61.9% | 10,014 | $209K |
| Bank of America Corp. | 0.00% | Add +44.9% | 9,225 | $192K |
| Simplex Trading, LLC | 0.01% | Add +1090.4% | 9,142 | $191K |
| Deutsche Bank AG | 0.00% | New | 7,589 | $158K |
| MetLife Investment Management, LLC | 0.00% | No change | 6,724 | $140K |
| Clearstead Advisors, LLC | 0.00% | Add +333.3% | 6,500 | $136K |
| AlphaCentric Advisors LLC | 0.13% | — | 6,476 | $135K |
| Canada Pension Plan Investment Board | 0.00% | New | 6,300 | $131K |
| China Universal Asset Management Co., Ltd. | 0.01% | Reduce -12.1% | 6,050 | $126K |
| JPMorgan Chase & Co. | 0.00% | Reduce -2.5% | 5,779 | $121K |
| Los Angeles Capital Management LLC | 0.00% | New | 6,410 | $113K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -1.1% | 5,079 | $106K |
| Nisa Investment Advisors, LLC | 0.00% | New | 5,000 | $104K |
| New York State Common Retirement Fund | 0.00% | No change | 5,000 | $104K |
| BNP Paribas Financial Markets | 0.00% | Add +16.4% | 2,819 | $59K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 2,638 | $55K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 1,122 | $23K |
| Legal & General Group Plc | 0.00% | No change | 1,050 | $22K |
| Citigroup Inc. | 0.00% | Reduce -10.8% | 1,033 | $22K |
| Russell Investments Group, Ltd. | 0.00% | Add +2.1% | 929 | $19K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +25.7% | 909 | $19K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -48.7% | 752 | $16K |
| California State Teachers Retirement System | 0.00% | Reduce -1.2% | 676 | $14K |
| HighMark Wealth Management LLC | 0.01% | New | 587 | $12K |
| Group One Trading LLC | 0.00% | Add +212.7% | 541 | $11K |
| Sterling Capital Management LLC | 0.00% | Reduce -15.2% | 537 | $11K |
| Federation des caisses Desjardins du Quebec | 0.00% | Reduce -50.0% | 500 | $10K |
| Royal Bank of Canada | 0.00% | Add +82.2% | 521 | $10K |
| Cwm, LLC | 0.00% | Add +21.4% | 466 | $10K |
| Farther Finance Advisors, LLC | 0.00% | New | 373 | $8K |
| GF Fund Management Co. LTD. | 0.00% | Reduce -8.9% | 367 | $8K |
| Amalgamated Bank | 0.00% | Reduce -8.0% | 345 | $7K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | New | 173 | $4K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | No change | 164 | $3K |
| Vermillion & White Wealth Management Group, LLC | 0.00% | No change | 107 | $2K |
| Daiwa Securities Group Inc. | 0.00% | No change | 80 | $2K |
| Allworth Financial LP | 0.00% | New | 62 | $1K |
| US Bancorp \de | 0.00% | No change | 37 | $772 |
| Optima Capital LLC | 0.00% | New | 31 | $647 |
| GAMMA Investing LLC | 0.00% | Add +262.5% | 29 | $605 |
| Caldwell Trust Co | 0.00% | No change | 20 | $417 |
"% of holder's portfolio" is TECX's weight in each manager's 13F, not the share of Tectonic Therapeutic Inc. the manager owns.