Tectonic TherapeuticTECX
13F holders, Q1 2025 (March 31)78holders +8
30new positions
22sold out
4famous investors
$17.71avg. 13F price*
At the end of Q1 2025, 78 institutions reported holding Tectonic Therapeutic Inc. (TECX) in their 13F filings, up 8 from Q4 2024. 30 opened new positions and 22 sold out. The largest holders were FMR LLC ($49.6M), Deep Track Capital, LP ($24.8M) and EcoR1 Capital, LLC ($16.6M). 4 famous investors held it, including Steve Cohen (0.0% of Point72 Asset Management's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Tectonic Therapeutic Inc.
- CUSIP
- 878972108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 30 | $58.5M |
| Exits | 22 | $95.2M |
All 13F filers, Q4 2024 → Q1 2025: 6,004,801 shares bought and 2,464,040 shares sold, net +3,540,761 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 78 holders
| FMR LLC | 0.00% | Add +84.6% | 2,799,400 | $49.6M |
| Deep Track Capital, LP | 0.80% | New | 1,401,938 | $24.8M |
| EcoR1 Capital, LLC | 0.98% | Add +10.1% | 935,121 | $16.6M |
| Farallon Capital Management, L.L.C. | 0.08% | Add +19.6% | 853,050 | $15.1M |
| 5AM Venture Management, LLC | 3.43% | Reduce -14.3% | 511,660 | $9.1M |
| Prosight Management, LP | 2.32% | New | 398,885 | $7.1M |
| Vanguard Group Inc. | 0.00% | Add +0.0% | 361,168 | $6.4M |
| Bollard Group LLC | 0.14% | New | 302,953 | $5.4M |
| Woodline Partners LP | 0.03% | Add +132.3% | 302,215 | $5.4M |
| Ikarian Capital, LLC | 1.55% | Add +89.1% | 269,090 | $4.8M |
| Millennium Management | 0.00% | Add +726.4% | 237,938 | $4.2M |
| BlackRock, Inc. | 0.00% | Add +5.4% | 205,528 | $3.6M |
| Point72 Asset Management | 0.01% | New | 200,000 | $3.5M |
| Tetragon Partners GP Ltd | 1.30% | New | 187,500 | $3.3M |
| Tang Capital Management LLC | 0.18% | Add +126.3% | 179,166 | $3.2M |
| Morgan Stanley | 0.00% | Add +843.1% | 164,235 | $2.9M |
| Renaissance Technologies | 0.00% | Add +199.6% | 144,302 | $2.6M |
| Ally Bridge Group (NY) LLC | 2.11% | New | 132,222 | $2.3M |
| Susquehanna International Group, LLP | 0.00% | Reduce -35.9% | 106,703 | $1.9M |
| Goldman Sachs Group Inc. | 0.00% | Add +331.1% | 104,793 | $1.9M |
| Baker Bros. Advisors LP | 0.02% | New | 100,000 | $1.8M |
| Adage Capital Partners Gp, L.L.C. | 0.00% | New | 100,000 | $1.8M |
| Citadel Advisors | 0.00% | New | 93,474 | $1.6M |
| Geode Capital Management, LLC | 0.00% | Add +2.5% | 79,487 | $1.4M |
| Boothbay Fund Management, LLC | 0.05% | Add +92.4% | 79,469 | $1.4M |
| Soleus Capital Management, L.P. | 0.11% | Add +141.3% | 76,841 | $1.4M |
| Bank of America Corp. | 0.00% | Add +50831.0% | 65,701 | $1.2M |
| ADAR1 Capital Management, LLC | 0.22% | Add +6.6% | 62,603 | $1.1M |
| Marshall Wace, LLP | 0.00% | New | 53,340 | $945K |
| Squarepoint Ops LLC | 0.00% | New | 52,897 | $937K |
| Superstring Capital Management LP | 1.07% | New | 50,746 | $899K |
| Jane Street Group, LLC | 0.00% | Add +58.7% | 47,145 | $835K |
| Qube Research & Technologies Ltd | 0.00% | Add +58.3% | 47,105 | $834K |
| Aldebaran Capital, LLC | 0.69% | Reduce -0.8% | 40,896 | $724K |
| Windmill Hill Asset Management Ltd | 0.22% | New | 40,023 | $709K |
| Knott David M Jr | 0.33% | New | 40,000 | $708K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Add +139.2% | 34,645 | $614K |
| Wells Fargo & Company | 0.00% | Add +77.0% | 32,771 | $580K |
| Dimensional Fund Advisors LP | 0.00% | Add +22.4% | 32,161 | $570K |
| State Street Corp. | 0.00% | Add +12.4% | 30,805 | $546K |
| OAKMONT Corp | 0.09% | New | 25,115 | $445K |
| Jump Financial, LLC | 0.01% | New | 21,126 | $374K |
| Wellington Management Group LLP | 0.00% | New | 19,660 | $348K |
| Raymond James Financial Inc. | 0.00% | Add +279.3% | 18,735 | $332K |
| Monimus Capital Management, LP | 0.28% | New | 18,461 | $327K |
| Cliffwater LLC | 0.07% | New | 15,369 | $272K |
| Northern Trust Corp. | 0.00% | No change | 14,682 | $260K |
| Bridgeway Capital Management, LLC | 0.01% | No change | 14,668 | $260K |
| Schonfeld Strategic Advisors LLC | 0.00% | Reduce -17.6% | 14,296 | $253K |
| Barclays PLC | 0.00% | Reduce -14.2% | 13,710 | $243K |
| Y-Intercept (Hong Kong) Ltd | 0.02% | New | 13,212 | $234K |
| T. Rowe Price Associates Inc. | 0.00% | New | 12,807 | $227K |
| American Century Companies Inc. | 0.00% | New | 12,057 | $214K |
| UBS Group AG | 0.00% | Add +4.2% | 11,227 | $199K |
| Balyasny Asset Management L.P. | 0.00% | Reduce -95.9% | 10,192 | $181K |
| Clarius Group, LLC | 0.01% | No change | 10,130 | $179K |
| Royal Bank of Canada | 0.00% | New | 7,000 | $124K |
| Virtus Investment Advisers, LLC | 0.02% | New | 3,541 | $63K |
| China Universal Asset Management Co., Ltd. | 0.00% | Reduce -5.4% | 2,959 | $52K |
| BNP Paribas Financial Markets | 0.00% | Add +1436.1% | 2,596 | $46K |
| Nordwand Advisors, LLC | 0.01% | No change | 1,500 | $27K |
| Clearstead Advisors, LLC | 0.00% | Reduce -60.9% | 1,500 | $27K |
| JPMorgan Chase & Co. | 0.00% | Reduce -9.8% | 1,122 | $20K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +285.6% | 833 | $15K |
| Citigroup Inc. | 0.00% | Reduce -95.2% | 648 | $11K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +1.6% | 500 | $9K |
| GF Fund Management Co. LTD. | 0.00% | Add +21.6% | 377 | $7K |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 369 | $7K |
| Cwm, LLC | 0.00% | Reduce -31.3% | 365 | $6K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | New | 283 | $5K |
| AlphaQuest LLC | 0.00% | New | 232 | $4K |
| Rhumbline Advisers | 0.00% | No change | 100 | $2K |
| SBI Securities Co., Ltd. | 0.00% | No change | 87 | $2K |
| Daiwa Securities Group Inc. | 0.00% | New | 80 | $1K |
| US Bancorp \de | 0.00% | Reduce -34.8% | 45 | $797 |
| National Bank of Canada | 0.00% | No change | 39 | $688 |
| Caldwell Trust Co | 0.00% | New | 20 | $354 |
| GAMMA Investing LLC | 0.00% | New | 8 | $142 |
"% of holder's portfolio" is TECX's weight in each manager's 13F, not the share of Tectonic Therapeutic Inc. the manager owns.