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, 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 |
|---|---|---|---|---|---|
| FMR LLC | 2,816,494 | $87.1M | 0.00% | +9,052+0.3% | Added |
| TCG Crossover Management, LLC | 1,204,891 | $37.2M | 1.07% | +1,204,891 | New |
| Standard Life Aberdeen plc | 1,141,824 | $35.3M | 0.06% | 00.0% | Unchanged |
| BlackRock, Inc. | 860,352 | $26.6M | 0.00% | +5,989+0.7% | Added |
| Braidwell LP | 847,151 | $26.2M | 0.87% | −80,373−8.7% | Reduced |
| First Light Asset Management, LLC | 647,743 | $20.0M | 1.79% | +647,743 | New |
| Baker Bros. Advisors LP | 607,788 | $18.8M | 0.11% | −295,612−32.7% | Reduced |
| 5AM Venture Management, LLC | 606,660 | $18.8M | 5.21% | 00.0% | Unchanged |
| Vanguard Capital Management LLC | 473,532 | $14.6M | 0.00% | +473,532 | New |
| Vestal Point Capital, LP | 328,000 | $10.1M | 0.28% | 00.0% | Unchanged |
| Bollard Group LLC | 302,953 | $9.36M | 0.29% | 00.0% | Unchanged |
| Kennedy Capital Management, Inc. | 286,682 | $8.86M | 0.19% | +77,457+37.0% | Added |
| Geode Capital Management, LLC | 268,273 | $8.29M | 0.00% | +4,713+1.8% | Added |
| Marshall Wace, LLP | 229,595 | $7.10M | 0.01% | +198,677+642.6% | Added |
| OrbiMed Advisors LLC | 226,600 | $7.00M | 0.16% | −348,000−60.6% | Reduced |
| State Street Corp | 213,505 | $6.60M | 0.00% | +4,380+2.1% | Added |
| Squarepoint Ops LLC | 164,419 | $5.08M | 0.01% | −35,227−17.6% | Reduced |
| Price T Rowe Associates Inc | 164,055 | $5.07M | 0.00% | +164,055 | New |
| Ikarian Capital, LLC | 157,537 | $4.87M | 0.70% | +157,537 | New |
| Ameriprise Financial Inc | 143,432 | $4.43M | 0.00% | +143,432 | New |
| Opaleye Management Inc. | 123,000 | $3.80M | 0.50% | −91,747−42.7% | Reduced |
| Soleus Capital Management, L.P. | 121,684 | $3.76M | 0.15% | +121,684 | New |
| D. E. Shaw & Co., Inc. | 116,120 | $3.59M | 0.00% | −4,130−3.4% | Reduced |
| Wells Fargo & Company | 112,664 | $3.48M | 0.00% | −7,747−6.4% | Reduced |
| Woodline Partners LP | 100,000 | $3.09M | 0.01% | −100,000−50.0% | Reduced |
| ExodusPoint Capital Management, LP | 83,679 | $2.59M | 0.03% | −27,509−24.7% | Reduced |
| Prosight Management, LP | 79,872 | $2.47M | 0.40% | −155,128−66.0% | Reduced |
| Northern Trust Corp | 78,353 | $2.42M | 0.00% | +6,098+8.4% | Added |
| Point72 Asset Management, L.P. | 68,598 | $2.12M | 0.00% | −423,734−86.1% | Reduced |
| Vanguard Fiduciary Trust Co | 67,895 | $2.10M | 0.00% | +67,895 | New |
| Connor, Clark & Lunn Investment Management Ltd. | 66,994 | $2.07M | 0.00% | −4,663−6.5% | Reduced |
| Morgan Stanley | 64,848 | $2.00M | 0.00% | −29,587−31.3% | Reduced |
| Raymond James Financial Inc | 64,196 | $1.98M | 0.00% | +9,595+17.6% | Added |
| Vanguard Portfolio Management LLC | 63,607 | $1.97M | 0.00% | +63,607 | New |
| Goldman Sachs Group Inc | 62,426 | $1.93M | 0.00% | −30,277−32.7% | Reduced |
| Millennium Management LLC | 58,348 | $1.80M | 0.00% | −242,472−80.6% | Reduced |
| JPMorgan Chase & Co | 58,870 | $1.70M | 0.00% | +53,091+918.7% | Added |
| Boothbay Fund Management, LLC | 46,137 | $1.43M | 0.03% | +46,137 | New |
| PFM Health Sciences, LP | 46,129 | $1.43M | 0.15% | +3,405+8.0% | Added |
| Jump Financial, LLC | 43,098 | $1.33M | 0.02% | +3,598+9.1% | Added |
| Polygon Management Ltd. | 37,588 | $1.16M | 0.23% | +37,588 | New |
| Aldebaran Capital, LLC | 37,184 | $1.15M | 0.88% | −169−0.5% | Reduced |
| SEI Investments Co | 36,870 | $1.14M | 0.00% | +21,619+141.8% | Added |
| UBS Group AG | 29,987 | $926.9K | 0.00% | −1,228−3.9% | Reduced |
| Wellington Management Group LLP | 29,240 | $903.8K | 0.00% | −8,139−21.8% | Reduced |
| Charles Schwab Investment Management Inc | 29,110 | $899.8K | 0.00% | −3,351−10.3% | Reduced |
| Clearstead Advisors, LLC | 26,760 | $827.2K | 0.01% | +20,260+311.7% | Added |
| Monimus Capital Management, LP | 26,753 | $826.9K | 0.23% | +159+0.6% | Added |
| Bank of New York Mellon Corp | 24,760 | $765.3K | 0.00% | −1,098−4.2% | Reduced |
| TD Asset Management Inc | 20,400 | $630.6K | 0.00% | +20,400 | New |
| Sectoral Asset Management Inc | 19,059 | $628.2K | 0.52% | −23,196−54.9% | Reduced |
| Gsa Capital Partners LLP | 18,873 | $583.0K | 0.04% | −44,403−70.2% | Reduced |
| AQR Capital Management LLC | 16,934 | $523.4K | 0.00% | +16,934 | New |
| Susquehanna International Group, LLP | 16,175 | $500.0K | 0.00% | −135,538−89.3% | Reduced |
| Alps Advisors Inc | 15,286 | $472.5K | 0.00% | −83−0.5% | Reduced |
| Rhumbline Advisers | 14,027 | $433.6K | 0.00% | −169−1.2% | Reduced |
| Manufacturers Life Insurance Company, The | 13,929 | $430.5K | 0.00% | +13,929 | New |
| Virtus Investment Advisers, Inc. | 13,799 | $426.5K | 0.12% | +337+2.5% | Added |
| ADAR1 Capital Management, LLC | 13,001 | $401.9K | 0.02% | −17,006−56.7% | Reduced |
| American Century Companies Inc | 12,534 | $387.4K | 0.00% | +12,534 | New |
| Creative Planning | 12,446 | $384.7K | 0.00% | +12,446 | New |
| Nuveen, LLC | 12,033 | $371.9K | 0.00% | −2,271−15.9% | Reduced |
| XTX Topco Ltd | 11,621 | $359.2K | 0.01% | +11,621 | New |
| Bank of America Corp | 11,466 | $354.4K | 0.00% | +2,241+24.3% | Added |
| Dimensional Fund Advisors LP | 10,077 | $311.5K | 0.00% | +20.0% | Added |
| Deutsche Bank AG | 9,345 | $288.9K | 0.00% | +1,756+23.1% | Added |
| Invesco Ltd. | 7,675 | $237.2K | 0.00% | +7,675 | New |
| AlphaCentric Advisors LLC | 6,849 | $211.7K | 0.21% | +373+5.8% | Added |
| MetLife Investment Management | 6,724 | $207.8K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 6,706 | $207.3K | 0.00% | −15,737−70.1% | Reduced |
| China Universal Asset Management Co., Ltd. | 6,332 | $195.7K | 0.01% | +282+4.7% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 5,215 | $161.2K | 0.00% | +136+2.7% | Added |
| Nisa Investment Advisors, LLC | 5,000 | $154.6K | 0.00% | 00.0% | Unchanged |
| New York State Common Retirement Fund | 4,600 | $142.2K | 0.00% | −400−8.0% | Reduced |
| Vanguard Global Advisers, LLC | 3,964 | $122.5K | 0.00% | +3,964 | New |
| BNP Paribas Arbitrage, SA | 2,816 | $87.0K | 0.00% | −3−0.1% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 2,638 | $81.5K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 1,829 | $56.5K | 0.00% | +1,363+292.5% | Added |
| Caption Management, LLC | 1,449 | $44.8K | 0.00% | +1,449 | New |
| Simplex Trading, LLC | 1,351 | $41.8K | 0.00% | −7,791−85.2% | Reduced |
| Citigroup Inc | 1,147 | $35.5K | 0.00% | +114+11.0% | Added |
| US Bancorp | 1,136 | $35.1K | 0.00% | +1,099+2,970.3% | Added |
| Ameritas Investment Partners, Inc. | 1,122 | $34.7K | 0.00% | 00.0% | Unchanged |
| Legal & General Group Plc | 1,000 | $30.9K | 0.00% | −50−4.8% | Reduced |
| Mirae Asset Global Investments Co., Ltd. | 979 | $30.3K | 0.00% | +70+7.7% | Added |
| Tower Research Capital LLC (TRC) | 914 | $28.3K | 0.00% | +162+21.5% | Added |
| Russell Investments Group, Ltd. | 851 | $26.3K | 0.00% | −78−8.4% | Reduced |
| California State Teachers Retirement System | 595 | $18.4K | 0.00% | −81−12.0% | Reduced |
| HighMark Wealth Management LLC | 587 | $18.1K | 0.01% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 500 | $15.5K | 0.00% | 00.0% | Unchanged |
| GF Fund Management Co. Ltd. | 415 | $12.8K | 0.00% | +48+13.1% | Added |
| UBS Asset Management Americas Inc | 382 | $11.8K | 0.00% | +209+120.8% | Added |
| Rockefeller Capital Management L.P. | 370 | $11.4K | 0.00% | +370 | New |
| GAMMA Investing LLC | 330 | $10.2K | 0.00% | +301+1,037.9% | Added |
| Sterling Capital Management LLC | 313 | $9.68K | 0.00% | −224−41.7% | Reduced |
| Farther Finance Advisors, LLC | 102 | $3.14K | 0.00% | −271−72.7% | Reduced |
| Allworth Financial LP | 65 | $2.01K | 0.00% | +3+4.8% | Added |
| Marshall & Sterling Wealth Advisors Inc. | 50 | $1.55K | 0.00% | +50 | New |
| Essential Partners LLC | 37 | $1.14K | 0.00% | +37 | New |
| The PNC Financial Services Group, Inc. | 26 | $804 | 0.00% | +26 | New |