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 | $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, 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 |
|---|---|---|---|---|---|
| Wells Fargo & Company | 117,428 | $4.04M | 0.00% | +4,764+4.2% | Added |
| Ameriprise Financial Inc | 142,448 | $4.90M | 0.00% | −984−0.7% | Reduced |
| Squarepoint Ops LLC | 145,028 | $4.99M | 0.01% | −19,391−11.8% | Reduced |
| Millennium Management LLC | 165,525 | $5.69M | 0.00% | +107,177+183.7% | Added |
| Marshall Wace, LLP | 172,101 | $5.92M | 0.00% | −57,494−25.0% | Reduced |
| D. E. Shaw & Co., Inc. | 186,550 | $6.41M | 0.00% | +70,430+60.7% | Added |
| Ikarian Capital, LLC | 205,837 | $7.08M | 1.16% | +48,300+30.7% | Added |
| State Street Corp | 219,908 | $7.56M | 0.00% | +6,403+3.0% | Added |
| OrbiMed Advisors LLC | 226,600 | $7.79M | 0.15% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 270,461 | $9.30M | 0.00% | +2,188+0.8% | Added |
| Kennedy Capital Management, Inc. | 282,202 | $9.70M | 0.17% | −4,480−1.6% | Reduced |
| Bollard Group LLC | 302,953 | $10.4M | 0.32% | 00.0% | Unchanged |
| Vestal Point Capital, LP | 425,000 | $14.6M | 0.34% | +97,000+29.6% | Added |
| Vanguard Capital Management LLC | 488,805 | $16.8M | 0.00% | +15,273+3.2% | Added |
| Braidwell LP | 596,900 | $20.5M | 0.76% | −250,251−29.5% | Reduced |
| 5AM Venture Management, LLC | 606,660 | $20.9M | 7.24% | 00.0% | Unchanged |
| Baker Bros. Advisors LP | 607,788 | $20.9M | 0.10% | 00.0% | Unchanged |
| First Light Asset Management, LLC | 800,726 | $27.5M | 1.67% | +152,983+23.6% | Added |
| BlackRock, Inc. | 862,592 | $29.7M | 0.00% | +2,240+0.3% | Added |
| Standard Life Aberdeen plc | 1,141,824 | $39.3M | 0.06% | 00.0% | Unchanged |
| TCG Crossover Management, LLC | 1,204,891 | $41.4M | 1.00% | 00.0% | Unchanged |
| FMR LLC | 2,830,378 | $97.3M | 0.00% | +13,884+0.5% | Added |
| Opaleye Management Inc. | 0 | $0 | 0.00% | −123,000−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −68,598−100.0% | Sold out |
| TD Asset Management Inc | 0 | $0 | 0.00% | −20,400−100.0% | Sold out |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −16,175−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −11,621−100.0% | Sold out |
| Caption Management, LLC | 0 | $0 | 0.00% | −1,449−100.0% | Sold out |
| Global Wealth Strategies & Associates | 0 | $0 | 0.00% | −18−100.0% | Sold out |
| Fortitude Family Office, LLC | 0 | $0 | 0.00% | −15−100.0% | Sold out |
| MAI Capital Management | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −7−100.0% | Sold out |
| Root Financial Partners, LLC | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| CWM, LLC | – | – | – | – | Not filed |
| Sunbelt Securities, Inc. | – | – | – | – | Not filed |