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, Q2 2026
Institutional positions in Tectonic Therapeutic, Inc. as of Jun 30, 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
- 122
- +13 vs. Q1 2026
- Shares held
- 14.0M
- +155.2K (+1.1%) vs. Q1 2026
- Total value
- $479.9M
- +$53.2M (+12.5%) vs. Q1 2026
- New holders
- 24
- 39 more added
- Sold out
- 11
- 40 more reduced
2 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: 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 | $190.0M |
| Q2 2025 | 82 | $240.7M |
| Q1 2025 | 78 | $198.8M |
| Q4 2024 | 70 | $354.9M |
| Q3 2024 | 53 | $218.5M |
| Q2 2024 | 39 | $88.0M |
| Q1 2024 | 0 | $0 |
| Q4 2023 | 0 | $0 |
| Q3 2023 | 0 | $0 |
| Q2 2023 | 0 | $0 |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Tectonic Therapeutic, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 2,830,378 | $97.3M | 0.00% | +13,884+0.5% | Added |
| TCG Crossover Management, LLC | 1,204,891 | $41.4M | 1.00% | 00.0% | Unchanged |
| Standard Life Aberdeen plc | 1,141,824 | $39.3M | 0.06% | 00.0% | Unchanged |
| BlackRock, Inc. | 862,592 | $29.7M | 0.00% | +2,240+0.3% | Added |
| First Light Asset Management, LLC | 800,726 | $27.5M | 1.67% | +152,983+23.6% | Added |
| Baker Bros. Advisors LP | 607,788 | $20.9M | 0.10% | 00.0% | Unchanged |
| 5AM Venture Management, LLC | 606,660 | $20.9M | 7.24% | 00.0% | Unchanged |
| Braidwell LP | 596,900 | $20.5M | 0.76% | −250,251−29.5% | Reduced |
| Vanguard Capital Management LLC | 488,805 | $16.8M | 0.00% | +15,273+3.2% | Added |
| Vestal Point Capital, LP | 425,000 | $14.6M | 0.34% | +97,000+29.6% | Added |
| Bollard Group LLC | 302,953 | $10.4M | 0.32% | 00.0% | Unchanged |
| Kennedy Capital Management, Inc. | 282,202 | $9.70M | 0.17% | −4,480−1.6% | Reduced |
| Geode Capital Management, LLC | 270,461 | $9.30M | 0.00% | +2,188+0.8% | Added |
| OrbiMed Advisors LLC | 226,600 | $7.79M | 0.15% | 00.0% | Unchanged |
| State Street Corp | 219,908 | $7.56M | 0.00% | +6,403+3.0% | Added |
| Ikarian Capital, LLC | 205,837 | $7.08M | 1.16% | +48,300+30.7% | Added |
| D. E. Shaw & Co., Inc. | 186,550 | $6.41M | 0.00% | +70,430+60.7% | Added |
| Marshall Wace, LLP | 172,101 | $5.92M | 0.00% | −57,494−25.0% | Reduced |
| Millennium Management LLC | 165,525 | $5.69M | 0.00% | +107,177+183.7% | Added |
| Squarepoint Ops LLC | 145,028 | $4.99M | 0.01% | −19,391−11.8% | Reduced |
| Ameriprise Financial Inc | 142,448 | $4.90M | 0.00% | −984−0.7% | Reduced |
| Wells Fargo & Company | 117,428 | $4.04M | 0.00% | +4,764+4.2% | Added |
| Northern Trust Corp | 113,904 | $3.92M | 0.00% | +35,551+45.4% | Added |
| Soleus Capital Management, L.P. | 101,684 | $3.50M | 0.12% | −20,000−16.4% | Reduced |
| Woodline Partners LP | 100,000 | $3.44M | 0.01% | 00.0% | Unchanged |
| Vanguard Portfolio Management LLC | 94,414 | $3.25M | 0.00% | +30,807+48.4% | Added |
| Citadel Advisors LLC | 90,393 | $3.11M | 0.00% | +90,393 | New |
| Goldman Sachs Group Inc | 73,924 | $2.54M | 0.00% | +11,498+18.4% | Added |
| Raymond James Financial Inc | 72,674 | $2.50M | 0.00% | +8,478+13.2% | Added |
| Sectoral Asset Management Inc | 71,009 | $2.44M | 1.70% | +51,950+272.6% | Added |
| Vanguard Fiduciary Trust Co | 68,394 | $2.35M | 0.00% | +499+0.7% | Added |
| Jane Street Group, LLC | 65,821 | $2.26M | 0.00% | +65,821 | New |
| Morgan Stanley | 65,373 | $2.25M | 0.00% | +525+0.8% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 64,940 | $2.23M | 0.00% | −2,054−3.1% | Reduced |
| Boothbay Fund Management, LLC | 60,771 | $2.09M | 0.04% | +14,634+31.7% | Added |
| JPMorgan Chase & Co | 55,364 | $1.83M | 0.00% | −3,506−6.0% | Reduced |
| Price T Rowe Associates Inc | 48,001 | $1.65M | 0.00% | −116,054−70.7% | Reduced |
| Polygon Management Ltd. | 46,516 | $1.60M | 0.26% | +8,928+23.8% | Added |
| PFM Health Sciences, LP | 45,631 | $1.57M | 0.14% | −498−1.1% | Reduced |
| HRT Financial LP | 44,540 | $1.53M | 0.00% | +44,540 | New |
| Jump Financial, LLC | 43,400 | $1.49M | 0.01% | +302+0.7% | Added |
| Prosight Management, LP | 39,731 | $1.37M | 0.24% | −40,141−50.3% | Reduced |
| Trexquant Investment LP | 36,991 | $1.27M | 0.01% | +36,991 | New |
| Aldebaran Capital, LLC | 36,797 | $1.26M | 0.95% | −387−1.0% | Reduced |
| ExodusPoint Capital Management, LP | 35,239 | $1.21M | 0.01% | −48,440−57.9% | Reduced |
| Wellington Management Group LLP | 31,432 | $1.08M | 0.00% | +2,192+7.5% | Added |
| Charles Schwab Investment Management Inc | 30,438 | $1.05M | 0.00% | +1,328+4.6% | Added |
| Monimus Capital Management, LP | 28,143 | $967.4K | 0.25% | +1,390+5.2% | Added |
| Bank of New York Mellon Corp | 25,247 | $867.9K | 0.00% | +487+2.0% | Added |
| Alps Advisors Inc | 19,147 | $658.2K | 0.00% | +3,861+25.3% | Added |
| Fisher Asset Management, LLC | 19,122 | $657.3K | 0.00% | +19,122 | New |
| American Century Companies Inc | 19,001 | $653.2K | 0.00% | +6,467+51.6% | Added |
| Quadrature Capital Ltd | 18,067 | $621.1K | 0.01% | +18,067 | New |
| SEI Investments Co | 17,029 | $585.4K | 0.00% | −19,841−53.8% | Reduced |
| Clearstead Advisors, LLC | 16,630 | $571.7K | 0.01% | −10,130−37.9% | Reduced |
| UBS Group AG | 15,055 | $517.5K | 0.00% | −14,932−49.8% | Reduced |
| ADAR1 Capital Management, LLC | 14,501 | $498.5K | 0.02% | +1,500+11.5% | Added |
| Rhumbline Advisers | 13,773 | $473.4K | 0.00% | −254−1.8% | Reduced |
| Nuveen, LLC | 13,514 | $464.5K | 0.00% | +1,481+12.3% | Added |
| Bank of America Corp | 11,043 | $379.6K | 0.00% | −423−3.7% | Reduced |
| Virtus Investment Advisers, Inc. | 10,806 | $371.5K | 0.09% | −2,993−21.7% | Reduced |
| Dimensional Fund Advisors LP | 10,443 | $359.0K | 0.00% | +366+3.6% | Added |
| Deutsche Bank AG | 10,039 | $345.1K | 0.00% | +694+7.4% | Added |
| Brevan Howard Capital Management LP | 9,573 | $329.1K | 0.00% | +9,573 | New |
| Barclays PLC | 9,128 | $313.8K | 0.00% | +2,422+36.1% | Added |
| Creative Planning | 8,961 | $308.0K | 0.00% | −3,485−28.0% | Reduced |
| Fox Run Management, L.L.C. | 8,865 | $304.7K | 0.05% | +8,865 | New |
| Vanguard Global Advisers, LLC | 8,765 | $301.3K | 0.00% | +4,801+121.1% | Added |
| Gsa Capital Partners LLP | 8,275 | $284.0K | 0.02% | −10,598−56.2% | Reduced |
| AlphaCentric Advisors LLC | 6,948 | $238.8K | 0.20% | +99+1.4% | Added |
| MetLife Investment Management | 6,724 | $231.1K | 0.00% | 00.0% | Unchanged |
| Alliancebernstein L.P. | 7,460 | $230.6K | 0.00% | +7,460 | New |
| AQR Capital Management LLC | 6,617 | $227.5K | 0.00% | −10,317−60.9% | Reduced |
| Invesco Ltd. | 6,388 | $219.6K | 0.00% | −1,287−16.8% | Reduced |
| State Board of Administration of Florida Retirement System | 6,060 | $208.3K | 0.00% | +6,060 | New |
| Rangeley Capital, LLC | 6,000 | $206.3K | 0.19% | +6,000 | New |
| Velan Capital Investment Management LP | 6,000 | $206.3K | 0.13% | +6,000 | New |
| Manufacturers Life Insurance Company, The | 5,996 | $206.1K | 0.00% | −7,933−57.0% | Reduced |
| Russell Investments Group, Ltd. | 5,567 | $191.4K | 0.00% | +4,716+554.2% | Added |
| Citigroup Inc | 5,548 | $190.7K | 0.00% | +4,401+383.7% | Added |
| China Universal Asset Management Co., Ltd. | 5,503 | $189.2K | 0.01% | −829−13.1% | Reduced |
| Nisa Investment Advisors, LLC | 5,400 | $185.6K | 0.00% | +400+8.0% | Added |
| BNP Paribas Arbitrage, SA | 5,146 | $176.9K | 0.00% | +2,330+82.7% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 4,694 | $161.4K | 0.00% | −521−10.0% | Reduced |
| New York State Common Retirement Fund | 4,600 | $158.1K | 0.00% | 00.0% | Unchanged |
| Police & Firemen's Retirement System of New Jersey | 2,638 | $90.7K | 0.00% | 00.0% | Unchanged |
| Quantbot Technologies LP | 1,819 | $62.5K | 0.00% | +1,819 | New |
| Ameritas Investment Partners, Inc. | 1,122 | $38.6K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 1,080 | $37.1K | 0.00% | −56−4.9% | Reduced |
| Legal & General Group Plc | 1,000 | $34.4K | 0.00% | 00.0% | Unchanged |
| Mirae Asset Global Investments Co., Ltd. | 844 | $29.0K | 0.00% | −135−13.8% | Reduced |
| Chung Wu Investment Group, LLC | 800 | $27.5K | 0.02% | +800 | New |
| SRS Capital Advisors, Inc. | 725 | $24.9K | 0.00% | +725 | New |
| Tower Research Capital LLC (TRC) | 661 | $22.7K | 0.00% | −253−27.7% | Reduced |
| State of Wyoming | 601 | $20.7K | 0.00% | +601 | New |
| HighMark Wealth Management LLC | 587 | $20.2K | 0.01% | 00.0% | Unchanged |
| Simplex Trading, LLC | 439 | $15.1K | 0.00% | −912−67.5% | Reduced |
| GF Fund Management Co. Ltd. | 400 | $13.8K | 0.00% | −15−3.6% | Reduced |
| UBS Asset Management Americas Inc | 382 | $13.1K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 370 | $12.7K | 0.00% | 00.0% | Unchanged |