Tectonic Therapeutic, Inc.
TECX- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001681087
In the last 90 days, Tectonic Therapeutic, Inc. insiders filed 0 open-market purchases and 3 sales; 122 institutions reported holding it in 13F filings for Q2 2026, worth $479.9M in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Tectonic Therapeutic, Inc. as of Dec 31, 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
- 105
- +7 vs. Q3 2025
- Shares held
- 13.8M
- +1.71M (+14.1%) vs. Q3 2025
- Total value
- $288.1M
- +$98.2M (+51.7%) vs. Q3 2025
- New holders
- 30
- 35 more added
- Sold out
- 23
- 24 more reduced
1 institution that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting TECX 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 | 122 | $479.9M |
| Q1 2026 | 111 | $426.8M |
| Q4 2025 | 105 | $288.1M |
| Q3 2025 | 99 | $189.9M |
| Q2 2025 | 82 | $240.7M |
| Q1 2025 | 78 | $198.8M |
| Q4 2024 | 70 | $354.9M |
| Q3 2024 | 53 | $217.4M |
| Q2 2024 | 40 | $88.1M |
| Q1 2024 | 47 | $35.2M |
| Q4 2023 | 45 | $32.2M |
| Q3 2023 | 48 | $39.9M |
| Q2 2023 | 41 | $18.9M |
| Q1 2023 | 48 | $22.8M |
| Q4 2022 | 45 | $14.8M |
| Q3 2022 | 54 | $15.7M |
| Q2 2022 | 64 | $23.8M |
| Q1 2022 | 81 | $38.8M |
| Q4 2021 | 94 | $134.9M |
| Q3 2021 | 101 | $166.5M |
| Q2 2021 | 97 | $287.7M |
| Q1 2021 | 99 | $423.5M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Tectonic Therapeutic, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 2,807,442 | $58.6M | 0.00% | +6610.0% | Added |
| Standard Life Aberdeen plc | 1,141,824 | $23.8M | 0.04% | +785,648+220.6% | Added |
| Braidwell LP | 927,524 | $19.3M | 0.62% | +190,657+25.9% | Added |
| Baker Bros. Advisors LP | 903,400 | $18.8M | 0.11% | +803,400+803.4% | Added |
| BlackRock, Inc. | 854,363 | $17.8M | 0.00% | +26,510+3.2% | Added |
| 5AM Venture Management, LLC | 606,660 | $12.7M | 3.98% | +95,000+18.6% | Added |
| Vanguard Group Inc | 599,898 | $12.5M | 0.00% | +30,418+5.3% | Added |
| OrbiMed Advisors LLC | 574,600 | $12.0M | 0.25% | +574,600 | New |
| Point72 Asset Management, L.P. | 492,332 | $10.3M | 0.02% | +70,577+16.7% | Added |
| Vestal Point Capital, LP | 328,000 | $6.84M | 0.25% | +328,000 | New |
| Citadel Advisors LLC | 317,617 | $6.63M | 0.00% | +19,229+6.4% | Added |
| Bollard Group LLC | 302,953 | $6.32M | 0.17% | 00.0% | Unchanged |
| Millennium Management LLC | 300,820 | $6.28M | 0.00% | +62,650+26.3% | Added |
| Geode Capital Management, LLC | 263,560 | $5.50M | 0.00% | −5,793−2.2% | Reduced |
| Pale Fire Capital SE | 261,026 | $5.45M | 0.70% | +1,300+0.5% | Added |
| Prosight Management, LP | 235,000 | $4.90M | 1.01% | −144,254−38.0% | Reduced |
| Opaleye Management Inc. | 214,747 | $4.48M | 0.59% | +214,747 | New |
| Kennedy Capital Management, Inc. | 209,225 | $4.36M | 0.09% | +449+0.2% | Added |
| State Street Corp | 209,125 | $4.36M | 0.00% | +43,594+26.3% | Added |
| Woodline Partners LP | 200,000 | $4.17M | 0.02% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 199,646 | $4.16M | 0.01% | +134,211+205.1% | Added |
| Susquehanna International Group, LLP | 151,713 | $3.16M | 0.00% | +151,713 | New |
| Wells Fargo & Company | 120,411 | $2.51M | 0.00% | +17,938+17.5% | Added |
| D. E. Shaw & Co., Inc. | 120,250 | $2.51M | 0.00% | +120,250 | New |
| ExodusPoint Capital Management, LP | 111,188 | $2.32M | 0.03% | +98,171+754.2% | Added |
| Morgan Stanley | 94,435 | $1.97M | 0.00% | −10,298−9.8% | Reduced |
| Goldman Sachs Group Inc | 92,703 | $1.93M | 0.00% | −4,163−4.3% | Reduced |
| Kotler Kevin | 80,000 | $1.67M | 1.23% | +80,000 | New |
| Knott David M Jr | 74,000 | $1.54M | 0.71% | 00.0% | Unchanged |
| Northern Trust Corp | 72,255 | $1.51M | 0.00% | −10,976−13.2% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 71,657 | $1.49M | 0.00% | +27,772+63.3% | Added |
| Gsa Capital Partners LLP | 63,276 | $1.32M | 0.11% | +63,276 | New |
| Raymond James Financial Inc | 54,601 | $1.14M | 0.00% | +2,670+5.1% | Added |
| PFM Health Sciences, LP | 42,724 | $891.2K | 0.09% | +42,724 | New |
| Sectoral Asset Management Inc | 42,255 | $881.4K | 0.71% | −150,515−78.1% | Reduced |
| Jump Financial, LLC | 39,500 | $824.0K | 0.01% | +39,500 | New |
| Schonfeld Strategic Advisors LLC | 39,109 | $815.8K | 0.00% | +39,109 | New |
| Wellington Management Group LLP | 37,379 | $779.7K | 0.00% | +170.0% | Added |
| Aldebaran Capital, LLC | 37,353 | $779.2K | 0.70% | −1,149−3.0% | Reduced |
| Charles Schwab Investment Management Inc | 32,461 | $677.1K | 0.00% | +103+0.3% | Added |
| UBS Group AG | 31,215 | $651.1K | 0.00% | −35,245−53.0% | Reduced |
| Marshall Wace, LLP | 30,918 | $644.9K | 0.00% | +5,842+23.3% | Added |
| ADAR1 Capital Management, LLC | 30,007 | $625.9K | 0.05% | −26,000−46.4% | Reduced |
| BIT Capital GmbH | 30,000 | $625.8K | 0.03% | +30,000 | New |
| Monimus Capital Management, LP | 26,594 | $554.8K | 0.37% | +2,700+11.3% | Added |
| Bank of New York Mellon Corp | 25,858 | $539.4K | 0.00% | −275−1.1% | Reduced |
| Barclays PLC | 22,443 | $468.2K | 0.00% | +4,467+24.8% | Added |
| Aquatic Capital Management LLC | 22,262 | $464.4K | 0.01% | +22,262 | New |
| Jane Street Group, LLC | 19,321 | $403.0K | 0.00% | −9,399−32.7% | Reduced |
| Quest Partners LLC | 18,187 | $379.4K | 0.02% | +10,888+149.2% | Added |
| Alps Advisors Inc | 15,369 | $320.6K | 0.00% | +15,369 | New |
| SEI Investments Co | 15,251 | $318.1K | 0.00% | +15,251 | New |
| Nuveen, LLC | 14,304 | $298.4K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 14,196 | $296.1K | 0.00% | −1,797−11.2% | Reduced |
| Virtus Investment Advisers, Inc. | 13,462 | $280.8K | 0.08% | +8,391+165.5% | Added |
| Palumbo Wealth Management LLC | 13,046 | $272.1K | 0.07% | +13,046 | New |
| Marex Group plc | 12,501 | $260.8K | 0.00% | +12,501 | New |
| Clarius Group, LLC | 10,130 | $211.3K | 0.01% | 00.0% | Unchanged |
| Dimensional Fund Advisors LP | 10,075 | $210.2K | 0.00% | +10,075 | New |
| Quadrature Capital Ltd | 10,014 | $208.9K | 0.00% | −16,258−61.9% | Reduced |
| Bank of America Corp | 9,225 | $192.4K | 0.00% | +2,860+44.9% | Added |
| Simplex Trading, LLC | 9,142 | $190.7K | 0.01% | +8,374+1,090.4% | Added |
| Deutsche Bank AG | 7,589 | $158.3K | 0.00% | +7,589 | New |
| MetLife Investment Management | 6,724 | $140.3K | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 6,500 | $135.6K | 0.00% | +5,000+333.3% | Added |
| AlphaCentric Advisors LLC | 6,476 | $135.1K | 0.13% | +6,476 | New |
| Canada Pension Plan Investment Board | 6,300 | $131.4K | 0.00% | +6,300 | New |
| China Universal Asset Management Co., Ltd. | 6,050 | $126.2K | 0.01% | −830−12.1% | Reduced |
| JPMorgan Chase & Co | 5,779 | $120.5K | 0.00% | −145−2.4% | Reduced |
| Los Angeles Capital Management LLC | 6,410 | $112.8K | 0.00% | +6,410 | New |
| Mirae Asset Global ETFs Holdings Ltd. | 5,079 | $105.9K | 0.00% | −55−1.1% | Reduced |
| New York State Common Retirement Fund | 5,000 | $104.3K | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 5,000 | $104.3K | 0.00% | +5,000 | New |
| BNP Paribas Arbitrage, SA | 2,819 | $58.8K | 0.00% | +397+16.4% | Added |
| Police & Firemen's Retirement System of New Jersey | 2,638 | $55.0K | 0.00% | 00.0% | Unchanged |
| Ameritas Investment Partners, Inc. | 1,122 | $23.4K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 1,050 | $21.9K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 1,033 | $21.5K | 0.00% | −125−10.8% | Reduced |
| Russell Investments Group, Ltd. | 929 | $19.4K | 0.00% | +19+2.1% | Added |
| Mirae Asset Global Investments Co., Ltd. | 909 | $19.0K | 0.00% | +186+25.7% | Added |
| Tower Research Capital LLC (TRC) | 752 | $15.7K | 0.00% | −713−48.7% | Reduced |
| California State Teachers Retirement System | 676 | $14.1K | 0.00% | −8−1.2% | Reduced |
| HighMark Wealth Management LLC | 587 | $12.2K | 0.00% | +587 | New |
| Group One Trading, L.P. | 541 | $11.3K | 0.00% | +368+212.7% | Added |
| Sterling Capital Management LLC | 537 | $11.2K | 0.00% | −96−15.2% | Reduced |
| Federation des caisses Desjardins du Quebec | 500 | $10.4K | 0.00% | −500−50.0% | Reduced |
| CWM, LLC | 466 | $10.0K | 0.00% | +82+21.4% | Added |
| Royal Bank of Canada | 521 | $10.0K | 0.00% | +235+82.2% | Added |
| Farther Finance Advisors, LLC | 373 | $7.78K | 0.00% | +373 | New |
| GF Fund Management Co. Ltd. | 367 | $7.66K | 0.00% | −36−8.9% | Reduced |
| Amalgamated Bank | 345 | $7.00K | 0.00% | −30−8.0% | Reduced |
| UBS Asset Management Americas Inc | 173 | $3.61K | 0.00% | +173 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 164 | $3.42K | 0.00% | 00.0% | Unchanged |
| Vermillion & White Wealth Management Group, LLC | 107 | $2.23K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 80 | $2.00K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 62 | $1.29K | 0.00% | +62 | New |
| US Bancorp | 37 | $772 | 0.00% | 00.0% | Unchanged |
| Optima Capital LLC | 31 | $647 | 0.00% | +31 | New |
| GAMMA Investing LLC | 29 | $605 | 0.00% | +21+262.5% | Added |
| Caldwell Trust Co | 20 | $417 | 0.00% | 00.0% | Unchanged |