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 2024
Institutional positions in Tectonic Therapeutic, Inc. as of Mar 31, 2024. 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
- 47
- +2 vs. Q4 2023
- Shares held
- 29.6M
- +5.86M (+24.7%) vs. Q4 2023
- Total value
- $35.2M
- +$3.02M (+9.4%) vs. Q4 2023
- New holders
- 9
- 10 more added
- Sold out
- 7
- 14 more reduced
Compare with Q4 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, Q1 2024
Shares, value and share of portfolio for each institution holding Tectonic Therapeutic, Inc.; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Bank of America Corp | 2 | $2 | 0.00% | −28−93.3% | Reduced |
| Group One Trading, L.P. | 13 | $17 | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 282 | $361 | 0.00% | 00.0% | Unchanged |
| National Bank of Canada | 380 | $463 | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 1,208 | $1.55K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 1,893 | $2.00K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 2,994 | $3.83K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 3,115 | $3.99K | 0.00% | −667−17.6% | Reduced |
| Advisor Group Holdings, Inc. | 4,000 | $5.12K | 0.00% | −4,000−50.0% | Reduced |
| CWM, LLC | 6,388 | $8.00K | 0.00% | 00.0% | Unchanged |
| Two Sigma Securities, LLC | 10,476 | $13.4K | 0.00% | +10,476 | New |
| Colonial River Wealth Management, LLC | 16,177 | $20.7K | 0.01% | 00.0% | Unchanged |
| Barclays PLC | 17,306 | $22.2K | 0.00% | 00.0% | Unchanged |
| XTX Topco Ltd | 24,359 | $31.2K | 0.00% | −30,594−55.7% | Reduced |
| Susquehanna International Group, LLP | 34,530 | $44.2K | 0.00% | +34,530 | New |
| Squarepoint Ops LLC | 38,694 | $49.5K | 0.00% | +38,694 | New |
| BBR Partners, LLC | 60,000 | $76.8K | 0.01% | 00.0% | Unchanged |
| Exome Asset Management LLC | 61,135 | $78.3K | 0.07% | +61,135 | New |
| Northern Trust Corp | 67,442 | $86.3K | 0.00% | −88−0.1% | Reduced |
| FNY Investment Advisers, LLC | 75,000 | $96.0K | 0.06% | −325,000−81.3% | Reduced |
| Wells Fargo & Company | 125,753 | $161.0K | 0.00% | −8,701−6.5% | Reduced |
| Walleye Capital LLC | 135,643 | $173.6K | 0.00% | +135,643 | New |
| State Street Corp | 140,852 | $180.3K | 0.00% | 00.0% | Unchanged |
| Vazirani Asset Management LLC | 150,000 | $192.0K | 0.53% | −500,000−76.9% | Reduced |
| Morgan Stanley | 159,709 | $204.4K | 0.00% | −468,550−74.6% | Reduced |
| Boothbay Fund Management, LLC | 190,635 | $244.0K | 0.01% | +35,802+23.1% | Added |
| Bridgeway Capital Management, LLC | 267,387 | $342.3K | 0.01% | +27,400+11.4% | Added |
| Two Sigma Investments, LP | 270,452 | $346.2K | 0.00% | −39,064−12.6% | Reduced |
| Two Sigma Advisers, LP | 296,300 | $379.3K | 0.00% | +31,200+11.8% | Added |
| Geode Capital Management, LLC | 372,439 | $476.8K | 0.00% | +5,923+1.6% | Added |
| Citadel Advisors LLC | 437,040 | $559.4K | 0.00% | −78,176−15.2% | Reduced |
| Aldebaran Capital, LLC | 517,431 | $662.3K | 0.63% | +62,445+13.7% | Added |
| Prosight Management, LP | 566,519 | $725.1K | 0.20% | +566,519 | New |
| BlackRock Inc. | 613,432 | $785.2K | 0.00% | −1,276−0.2% | Reduced |
| Affinity Asset Advisors, LLC | 700,000 | $896.0K | 0.15% | +200,000+40.0% | Added |
| Ikarian Capital, LLC | 754,061 | $965.2K | 0.26% | +35,802+5.0% | Added |
| Tang Capital Management LLC | 852,802 | $1.09M | 0.11% | +852,802 | New |
| Renaissance Technologies LLC | 888,167 | $1.14M | 0.00% | +129,224+17.0% | Added |
| Aisling Capital Management LP | 1,009,779 | $1.29M | 0.44% | 00.0% | Unchanged |
| Newtyn Management, LLC | 1,118,892 | $1.43M | 0.29% | −1,615,283−59.1% | Reduced |
| Acadian Asset Management LLC | 1,236,738 | $1.58M | 0.01% | −217,526−15.0% | Reduced |
| Vanguard Group Inc | 1,881,234 | $2.41M | 0.00% | +279,400+17.4% | Added |
| Verition Fund Management LLC | 1,927,865 | $2.47M | 0.02% | +1,927,865 | New |
| ADAR1 Capital Management, LLC | 3,954,857 | $5.06M | 1.38% | +3,904,710+7,786.5% | Added |
| BML Capital Management, LLC | 4,001,627 | $5.12M | 3.43% | 00.0% | Unchanged |
| Atlas Venture Life Science Advisors, LLC | 4,541,381 | $5.81M | 0.54% | 00.0% | Unchanged |
| FMR LLC | 2,017,633 | – | – | +2,017,633 | New |
| Gabelli & Co Investment Advisers, Inc. | 0 | $0 | 0.00% | −353,000−100.0% | Sold out |
| Gabelli Funds LLC | 0 | $0 | 0.00% | −343,421−100.0% | Sold out |
| Western Standard LLC | 0 | $0 | 0.00% | −312,912−100.0% | Sold out |
| JBF Capital, Inc. | 0 | $0 | 0.00% | −160,000−100.0% | Sold out |
| Bank of New York Mellon Corp | 0 | $0 | 0.00% | −16,788−100.0% | Sold out |
| Commonwealth Equity Services, LLC | 0 | $0 | 0.00% | −11,000−100.0% | Sold out |
| Virtu Financial LLC | 0 | $0 | 0.00% | −10,048−100.0% | Sold out |