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 2 sales; 122 institutions reported holding it in 13F filings for Q2 2026, worth $479.9M in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in Tectonic Therapeutic, Inc. as of Mar 31, 2026. 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
- 111
- +9 vs. Q4 2025
- Shares held
- 13.8M
- +687.1K (+5.2%) vs. Q4 2025
- Total value
- $426.8M
- +$153.1M (+55.9%) vs. Q4 2025
- New holders
- 29
- 33 more added
- Sold out
- 20
- 37 more reduced
3 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Tectonic Therapeutic, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Zurcher Kantonalbank (Zurich Cantonalbank) | 3 | $93 | 0.00% | −161−98.2% | Reduced |
| Root Financial Partners, LLC | 5 | $155 | 0.00% | +5 | New |
| True Wealth Design, LLC | 7 | $217 | 0.00% | +2+40.0% | Added |
| MAI Capital Management | 7 | $217 | 0.00% | +7 | New |
| Sunbelt Securities, Inc. | 8 | $247 | 0.00% | +3+60.0% | Added |
| Rothschild Investment LLC | 11 | $340 | 0.00% | +11 | New |
| Huntington National Bank | 13 | $402 | 0.00% | +13 | New |
| Fortitude Family Office, LLC | 15 | $464 | 0.00% | +15 | New |
| Global Wealth Strategies & Associates | 18 | $556 | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 19 | $588 | 0.00% | +17+850.0% | Added |
| Caldwell Trust Co | 20 | $618 | 0.00% | 00.0% | Unchanged |
| The PNC Financial Services Group, Inc. | 26 | $804 | 0.00% | +26 | New |
| Essential Partners LLC | 37 | $1.14K | 0.00% | +37 | New |
| Marshall & Sterling Wealth Advisors Inc. | 50 | $1.55K | 0.00% | +50 | New |
| Allworth Financial LP | 65 | $2.01K | 0.00% | +3+4.8% | Added |
| Farther Finance Advisors, LLC | 102 | $3.14K | 0.00% | −271−72.7% | Reduced |
| Sterling Capital Management LLC | 313 | $9.68K | 0.00% | −224−41.7% | Reduced |
| GAMMA Investing LLC | 330 | $10.2K | 0.00% | +301+1,037.9% | Added |
| Rockefeller Capital Management L.P. | 370 | $11.4K | 0.00% | +370 | New |
| UBS Asset Management Americas Inc | 382 | $11.8K | 0.00% | +209+120.8% | Added |
| GF Fund Management Co. Ltd. | 415 | $12.8K | 0.00% | +48+13.1% | Added |
| Federation des caisses Desjardins du Quebec | 500 | $15.5K | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 587 | $18.1K | 0.01% | 00.0% | Unchanged |
| California State Teachers Retirement System | 595 | $18.4K | 0.00% | −81−12.0% | Reduced |
| Russell Investments Group, Ltd. | 851 | $26.3K | 0.00% | −78−8.4% | Reduced |
| Tower Research Capital LLC (TRC) | 914 | $28.3K | 0.00% | +162+21.5% | Added |
| Mirae Asset Global Investments Co., Ltd. | 979 | $30.3K | 0.00% | +70+7.7% | Added |
| Legal & General Group Plc | 1,000 | $30.9K | 0.00% | −50−4.8% | Reduced |
| Ameritas Investment Partners, Inc. | 1,122 | $34.7K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 1,136 | $35.1K | 0.00% | +1,099+2,970.3% | Added |
| Citigroup Inc | 1,147 | $35.5K | 0.00% | +114+11.0% | Added |
| Simplex Trading, LLC | 1,351 | $41.8K | 0.00% | −7,791−85.2% | Reduced |
| Caption Management, LLC | 1,449 | $44.8K | 0.00% | +1,449 | New |
| CWM, LLC | 1,829 | $56.5K | 0.00% | +1,363+292.5% | Added |
| Police & Firemen's Retirement System of New Jersey | 2,638 | $81.5K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 2,816 | $87.0K | 0.00% | −3−0.1% | Reduced |
| Vanguard Global Advisers, LLC | 3,964 | $122.5K | 0.00% | +3,964 | New |
| New York State Common Retirement Fund | 4,600 | $142.2K | 0.00% | −400−8.0% | Reduced |
| Nisa Investment Advisors, LLC | 5,000 | $154.6K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global ETFs Holdings Ltd. | 5,215 | $161.2K | 0.00% | +136+2.7% | Added |
| China Universal Asset Management Co., Ltd. | 6,332 | $195.7K | 0.01% | +282+4.7% | Added |
| Barclays PLC | 6,706 | $207.3K | 0.00% | −15,737−70.1% | Reduced |
| MetLife Investment Management | 6,724 | $207.8K | 0.00% | 00.0% | Unchanged |
| AlphaCentric Advisors LLC | 6,849 | $211.7K | 0.21% | +373+5.8% | Added |
| Invesco Ltd. | 7,675 | $237.2K | 0.00% | +7,675 | New |
| Deutsche Bank AG | 9,345 | $288.9K | 0.00% | +1,756+23.1% | Added |
| Dimensional Fund Advisors LP | 10,077 | $311.5K | 0.00% | +20.0% | Added |
| Bank of America Corp | 11,466 | $354.4K | 0.00% | +2,241+24.3% | Added |
| XTX Topco Ltd | 11,621 | $359.2K | 0.01% | +11,621 | New |
| Nuveen, LLC | 12,033 | $371.9K | 0.00% | −2,271−15.9% | Reduced |
| Creative Planning | 12,446 | $384.7K | 0.00% | +12,446 | New |
| American Century Companies Inc | 12,534 | $387.4K | 0.00% | +12,534 | New |
| ADAR1 Capital Management, LLC | 13,001 | $401.9K | 0.02% | −17,006−56.7% | Reduced |
| Virtus Investment Advisers, Inc. | 13,799 | $426.5K | 0.12% | +337+2.5% | Added |
| Manufacturers Life Insurance Company, The | 13,929 | $430.5K | 0.00% | +13,929 | New |
| Rhumbline Advisers | 14,027 | $433.6K | 0.00% | −169−1.2% | Reduced |
| Alps Advisors Inc | 15,286 | $472.5K | 0.00% | −83−0.5% | Reduced |
| Susquehanna International Group, LLP | 16,175 | $500.0K | 0.00% | −135,538−89.3% | Reduced |
| AQR Capital Management LLC | 16,934 | $523.4K | 0.00% | +16,934 | New |
| Gsa Capital Partners LLP | 18,873 | $583.0K | 0.04% | −44,403−70.2% | Reduced |
| Sectoral Asset Management Inc | 19,059 | $628.2K | 0.52% | −23,196−54.9% | Reduced |
| TD Asset Management Inc | 20,400 | $630.6K | 0.00% | +20,400 | New |
| Bank of New York Mellon Corp | 24,760 | $765.3K | 0.00% | −1,098−4.2% | Reduced |
| Monimus Capital Management, LP | 26,753 | $826.9K | 0.23% | +159+0.6% | Added |
| Clearstead Advisors, LLC | 26,760 | $827.2K | 0.01% | +20,260+311.7% | Added |
| Charles Schwab Investment Management Inc | 29,110 | $899.8K | 0.00% | −3,351−10.3% | Reduced |
| Wellington Management Group LLP | 29,240 | $903.8K | 0.00% | −8,139−21.8% | Reduced |
| UBS Group AG | 29,987 | $926.9K | 0.00% | −1,228−3.9% | Reduced |
| SEI Investments Co | 36,870 | $1.14M | 0.00% | +21,619+141.8% | Added |
| Aldebaran Capital, LLC | 37,184 | $1.15M | 0.88% | −169−0.5% | Reduced |
| Polygon Management Ltd. | 37,588 | $1.16M | 0.23% | +37,588 | New |
| Jump Financial, LLC | 43,098 | $1.33M | 0.02% | +3,598+9.1% | Added |
| PFM Health Sciences, LP | 46,129 | $1.43M | 0.15% | +3,405+8.0% | Added |
| Boothbay Fund Management, LLC | 46,137 | $1.43M | 0.03% | +46,137 | New |
| JPMorgan Chase & Co | 58,870 | $1.70M | 0.00% | +53,091+918.7% | Added |
| Millennium Management LLC | 58,348 | $1.80M | 0.00% | −242,472−80.6% | Reduced |
| Goldman Sachs Group Inc | 62,426 | $1.93M | 0.00% | −30,277−32.7% | Reduced |
| Vanguard Portfolio Management LLC | 63,607 | $1.97M | 0.00% | +63,607 | New |
| Raymond James Financial Inc | 64,196 | $1.98M | 0.00% | +9,595+17.6% | Added |
| Morgan Stanley | 64,848 | $2.00M | 0.00% | −29,587−31.3% | Reduced |
| Connor, Clark & Lunn Investment Management Ltd. | 66,994 | $2.07M | 0.00% | −4,663−6.5% | Reduced |
| Vanguard Fiduciary Trust Co | 67,895 | $2.10M | 0.00% | +67,895 | New |
| Point72 Asset Management, L.P. | 68,598 | $2.12M | 0.00% | −423,734−86.1% | Reduced |
| Northern Trust Corp | 78,353 | $2.42M | 0.00% | +6,098+8.4% | Added |
| Prosight Management, LP | 79,872 | $2.47M | 0.40% | −155,128−66.0% | Reduced |
| ExodusPoint Capital Management, LP | 83,679 | $2.59M | 0.03% | −27,509−24.7% | Reduced |
| Woodline Partners LP | 100,000 | $3.09M | 0.01% | −100,000−50.0% | Reduced |
| Wells Fargo & Company | 112,664 | $3.48M | 0.00% | −7,747−6.4% | Reduced |
| D. E. Shaw & Co., Inc. | 116,120 | $3.59M | 0.00% | −4,130−3.4% | Reduced |
| Soleus Capital Management, L.P. | 121,684 | $3.76M | 0.15% | +121,684 | New |
| Opaleye Management Inc. | 123,000 | $3.80M | 0.50% | −91,747−42.7% | Reduced |
| Ameriprise Financial Inc | 143,432 | $4.43M | 0.00% | +143,432 | New |
| Ikarian Capital, LLC | 157,537 | $4.87M | 0.70% | +157,537 | New |
| Price T Rowe Associates Inc | 164,055 | $5.07M | 0.00% | +164,055 | New |
| Squarepoint Ops LLC | 164,419 | $5.08M | 0.01% | −35,227−17.6% | Reduced |
| State Street Corp | 213,505 | $6.60M | 0.00% | +4,380+2.1% | Added |
| OrbiMed Advisors LLC | 226,600 | $7.00M | 0.16% | −348,000−60.6% | Reduced |
| Marshall Wace, LLP | 229,595 | $7.10M | 0.01% | +198,677+642.6% | Added |
| Geode Capital Management, LLC | 268,273 | $8.29M | 0.00% | +4,713+1.8% | Added |
| Kennedy Capital Management, Inc. | 286,682 | $8.86M | 0.19% | +77,457+37.0% | Added |