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, Q4 2023
Institutional positions in Tectonic Therapeutic, Inc. as of Dec 31, 2023. 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
- 45
- −2 vs. Q3 2023
- Shares held
- 23.7M
- −1.64M (−6.5%) vs. Q3 2023
- Total value
- $32.2M
- −$6.79M (−17.4%) vs. Q3 2023
- New holders
- 4
- 14 more added
- Sold out
- 6
- 12 more reduced
1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2023: 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 2023
Shares, value and share of portfolio for each institution holding Tectonic Therapeutic, Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Group One Trading, L.P. | 13 | $18 | 0.00% | +13 | New |
| Bank of America Corp | 30 | $40 | 0.00% | +28+1,400.0% | Added |
| JPMorgan Chase & Co | 282 | $384 | 0.00% | −83,538−99.7% | Reduced |
| National Bank of Canada | 380 | $543 | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 1,208 | $1.64K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 1,893 | $3.00K | 0.00% | −86−4.3% | Reduced |
| BNP Paribas Arbitrage, SA | 2,994 | $4.07K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 3,782 | $5.14K | 0.00% | −1,416−27.2% | Reduced |
| CWM, LLC | 6,388 | $9.00K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 8,000 | $10.9K | 0.00% | +5,000+166.7% | Added |
| Virtu Financial LLC | 10,048 | $14.0K | 0.00% | −25,802−72.0% | Reduced |
| Commonwealth Equity Services, LLC | 11,000 | $15.0K | 0.00% | −320−2.8% | Reduced |
| Colonial River Wealth Management, LLC | 16,177 | $22.0K | 0.01% | −498−3.0% | Reduced |
| Bank of New York Mellon Corp | 16,788 | $22.8K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 17,306 | $23.5K | 0.00% | 00.0% | Unchanged |
| ADAR1 Capital Management, LLC | 50,147 | $68.2K | 0.03% | +50,147 | New |
| XTX Topco Ltd | 54,953 | $74.7K | 0.02% | +25,846+88.8% | Added |
| BBR Partners, LLC | 60,000 | $81.6K | 0.01% | 00.0% | Unchanged |
| Northern Trust Corp | 67,530 | $91.8K | 0.00% | −6,923−9.3% | Reduced |
| Wells Fargo & Company | 134,454 | $182.9K | 0.00% | −14,153−9.5% | Reduced |
| State Street Corp | 140,852 | $191.6K | 0.00% | 00.0% | Unchanged |
| Boothbay Fund Management, LLC | 154,833 | $210.6K | 0.01% | 00.0% | Unchanged |
| JBF Capital, Inc. | 160,000 | $217.6K | 0.04% | 00.0% | Unchanged |
| Bridgeway Capital Management, LLC | 239,987 | $326.4K | 0.01% | +92,587+62.8% | Added |
| Two Sigma Advisers, LP | 265,100 | $360.5K | 0.00% | +28,500+12.0% | Added |
| Two Sigma Investments, LP | 309,516 | $420.9K | 0.00% | −18,399−5.6% | Reduced |
| Western Standard LLC | 312,912 | $425.6K | 0.40% | +2,551+0.8% | Added |
| Gabelli Funds LLC | 343,421 | $467.1K | 0.00% | +343,421 | New |
| Gabelli & Co Investment Advisers, Inc. | 353,000 | $480.1K | 0.09% | +353,000 | New |
| Geode Capital Management, LLC | 366,516 | $498.6K | 0.00% | +13,400+3.8% | Added |
| FNY Investment Advisers, LLC | 400,000 | $544.0K | 0.61% | +175,000+77.8% | Added |
| Aldebaran Capital, LLC | 454,986 | $618.8K | 0.63% | −15,144−3.2% | Reduced |
| Affinity Asset Advisors, LLC | 500,000 | $680.0K | 0.14% | 00.0% | Unchanged |
| Citadel Advisors LLC | 515,216 | $700.7K | 0.00% | +5,233+1.0% | Added |
| BlackRock Inc. | 614,708 | $836.0K | 0.00% | −7,845−1.3% | Reduced |
| Morgan Stanley | 628,259 | $854.4K | 0.00% | +107,060+20.5% | Added |
| Vazirani Asset Management LLC | 650,000 | $884.0K | 3.82% | +181,727+38.8% | Added |
| Ikarian Capital, LLC | 718,259 | $976.8K | 0.27% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 758,943 | $1.03M | 0.00% | +240,476+46.4% | Added |
| Aisling Capital Management LP | 1,009,779 | $1.37M | 0.41% | 00.0% | Unchanged |
| Acadian Asset Management LLC | 1,454,264 | $1.98M | 0.01% | −270,825−15.7% | Reduced |
| Vanguard Group Inc | 1,601,834 | $2.18M | 0.00% | +27,000+1.7% | Added |
| Newtyn Management, LLC | 2,734,175 | $3.72M | 0.73% | +734,175+36.7% | Added |
| BML Capital Management, LLC | 4,001,627 | $5.44M | 4.30% | 00.0% | Unchanged |
| Atlas Venture Life Science Advisors, LLC | 4,541,381 | $6.18M | 0.74% | 00.0% | Unchanged |
| Tang Capital Management LLC | 0 | $0 | 0.00% | −3,512,686−100.0% | Sold out |
| Millennium Management LLC | 0 | $0 | 0.00% | −35,872−100.0% | Sold out |
| Private Advisor Group, LLC | 0 | $0 | 0.00% | −21,410−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −9,876−100.0% | Sold out |
| IFP Advisors, Inc | 0 | $0 | 0.00% | −3,500−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −215−100.0% | Sold out |
| Terrapin Asset Management, LLC | – | – | – | – | Not filed |