Tectonic TherapeuticTECX
13F holders, Q3 2025 (September 30)99holders +17
28new positions
11sold out
4famous investors
$15.69avg. 13F price*
At the end of Q3 2025, 99 institutions reported holding Tectonic Therapeutic Inc. (TECX) in their 13F filings, up 17 from Q2 2025. 28 opened new positions and 11 sold out. The largest holders were FMR LLC ($44.0M), BlackRock, Inc. ($13.0M) and Braidwell LP ($11.6M). 4 famous investors held it, including Steve Cohen (0.0% of Point72 Asset Management's portfolio), Ken Griffin (0.0% of Citadel Advisors's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Tectonic Therapeutic Inc.
- CUSIP
- 878972108
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 28 | $34.5M |
| Exits | 11 | $52.3M |
All 13F filers, Q2 2025 → Q3 2025: 3,236,301 shares bought and 3,243,929 shares sold, net −7,628 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 99 holders
| FMR LLC | 0.00% | Add +0.2% | 2,806,781 | $44.0M |
| BlackRock, Inc. | 0.00% | Add +8.7% | 827,853 | $13.0M |
| Braidwell LP | 0.47% | New | 736,867 | $11.6M |
| Farallon Capital Management, L.L.C. | 0.06% | Reduce -25.0% | 640,000 | $10.0M |
| Vanguard Group Inc. | 0.00% | Reduce -2.5% | 569,480 | $8.9M |
| 5AM Venture Management, LLC | 2.94% | No change | 511,660 | $8.0M |
| Point72 Asset Management | 0.02% | Add +82.5% | 421,755 | $6.6M |
| Prosight Management, LP | 1.43% | Reduce -14.2% | 379,254 | $6.0M |
| Aberdeen Group plc | 0.01% | New | 356,176 | $5.6M |
| Bollard Group LLC | 0.12% | No change | 302,953 | $4.8M |
| Citadel Advisors | 0.00% | Add +80.8% | 298,388 | $4.7M |
| Geode Capital Management, LLC | 0.00% | Reduce -1.1% | 269,353 | $4.2M |
| Pale Fire Capital SE | 0.45% | New | 259,726 | $4.1M |
| Tetragon Partners GP Ltd | 0.92% | Add +6.5% | 243,728 | $3.8M |
| Millennium Management | 0.00% | Add +218.0% | 238,170 | $3.7M |
| Kennedy Capital Management LLC | 0.07% | New | 208,776 | $3.3M |
| First Light Asset Management, LLC | 0.30% | New | 202,393 | $3.2M |
| Woodline Partners LP | 0.01% | Reduce -37.8% | 200,000 | $3.1M |
| Sectoral Asset Management Inc. | 1.87% | Add +94.8% | 192,770 | $3.0M |
| Stempoint Capital LP | 0.60% | Add +372.5% | 188,999 | $3.0M |
| Tang Capital Management LLC | 0.11% | No change | 179,166 | $2.8M |
| State Street Corp. | 0.00% | Add +26.3% | 165,531 | $2.6M |
| Ally Bridge Group (NY) LLC | 1.82% | Reduce -15.3% | 138,595 | $2.2M |
| Superstring Capital Management LP | 1.84% | Add +50.9% | 119,286 | $1.9M |
| Sphera Funds Management LTD. | 0.43% | New | 115,908 | $1.8M |
| Morgan Stanley | 0.00% | Reduce -34.7% | 104,733 | $1.6M |
| Wells Fargo & Company | 0.00% | Add +40.8% | 102,473 | $1.6M |
| Baker Bros. Advisors LP | 0.01% | No change | 100,000 | $1.6M |
| Goldman Sachs Group Inc. | 0.00% | New | 96,866 | $1.5M |
| Renaissance Technologies | 0.00% | Add +7.4% | 93,400 | $1.5M |
| Northern Trust Corp. | 0.00% | Add +5.3% | 83,231 | $1.3M |
| Knott David M Jr | 0.49% | No change | 74,000 | $1.2M |
| Jain Global LLC | 0.02% | New | 71,504 | $1.1M |
| UBS Group AG | 0.00% | Add +94.1% | 66,460 | $1.0M |
| Squarepoint Ops LLC | 0.00% | Reduce -23.4% | 65,435 | $1.0M |
| ADAR1 Capital Management, LLC | 0.09% | Reduce -23.8% | 56,007 | $879K |
| Raymond James Financial Inc. | 0.00% | Add +141.1% | 51,931 | $815K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Add +22.9% | 43,885 | $689K |
| Windmill Hill Asset Management Ltd | 0.16% | No change | 40,023 | $628K |
| Aldebaran Capital, LLC | 0.55% | Reduce -4.4% | 38,502 | $604K |
| Wellington Management Group LLP | 0.00% | Add +30.9% | 37,362 | $586K |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -0.0% | 32,358 | $508K |
| Jane Street Group, LLC | 0.00% | New | 28,720 | $451K |
| Quadrature Capital Ltd | 0.00% | New | 26,272 | $411K |
| Bank of New York Mellon Corp | 0.00% | Add +3.5% | 26,133 | $410K |
| Marshall Wace, LLP | 0.00% | Add +134.8% | 25,076 | $393K |
| Soleus Capital Management, L.P. | 0.02% | Reduce -67.5% | 25,000 | $392K |
| Monimus Capital Management, LP | 0.28% | No change | 23,894 | $375K |
| Barclays PLC | 0.00% | Reduce -17.9% | 17,976 | $282K |
| Rhumbline Advisers | 0.00% | Add +0.1% | 15,993 | $251K |
| State of Wisconsin Investment Board | 0.00% | New | 15,559 | $244K |
| DLD Asset Management, LP | 0.10% | New | 15,000 | $235K |
| Nuveen, LLC | 0.00% | No change | 14,304 | $224K |
| ExodusPoint Capital Management, LP | 0.00% | New | 13,017 | $204K |
| Rangeley Capital, LLC | 0.18% | New | 12,000 | $188K |
| Engineers Gate Manager LP | 0.00% | New | 11,093 | $174K |
| XTX Topco Ltd | 0.01% | New | 10,856 | $170K |
| Trexquant Investment LP | 0.00% | New | 10,662 | $167K |
| Clarius Group, LLC | 0.01% | No change | 10,130 | $159K |
| AlphaQuest LLC | 0.01% | Add +208.6% | 7,299 | $115K |
| China Universal Asset Management Co., Ltd. | 0.01% | Add +83.5% | 6,880 | $108K |
| MetLife Investment Management, LLC | 0.00% | No change | 6,724 | $106K |
| Bank of America Corp. | 0.00% | Reduce -8.1% | 6,365 | $100K |
| JPMorgan Chase & Co. | 0.00% | Reduce -9.5% | 5,924 | $93K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -14.6% | 5,134 | $81K |
| Virtus Investment Advisers, LLC | 0.02% | Add +21.0% | 5,071 | $80K |
| New York State Common Retirement Fund | 0.00% | No change | 5,000 | $78K |
| Caitong International Asset Management Co., Ltd | 0.04% | Add +451.6% | 3,966 | $62K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 2,638 | $41K |
| BNP Paribas Financial Markets | 0.00% | Reduce -85.2% | 2,422 | $38K |
| Clearstead Advisors, LLC | 0.00% | No change | 1,500 | $24K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +17.5% | 1,465 | $23K |
| Citigroup Inc. | 0.00% | Reduce -71.6% | 1,158 | $18K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 1,122 | $18K |
| Point72 (DIFC) Ltd | 0.00% | New | 1,103 | $17K |
| Legal & General Group Plc | 0.00% | No change | 1,050 | $16K |
| Federation des caisses Desjardins du Quebec | 0.00% | New | 1,000 | $16K |
| Russell Investments Group, Ltd. | 0.00% | New | 910 | $14K |
| Simplex Trading, LLC | 0.00% | New | 768 | $12K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +0.3% | 723 | $11K |
| California State Teachers Retirement System | 0.00% | New | 684 | $11K |
| Sterling Capital Management LLC | 0.00% | Add +152.2% | 633 | $10K |
| GF Fund Management Co. LTD. | 0.00% | Add +6.9% | 403 | $6K |
| Amalgamated Bank | 0.00% | No change | 375 | $6K |
| Cwm, LLC | 0.00% | Add +5.2% | 384 | $6K |
| Royal Bank of Canada | 0.00% | Reduce -58.1% | 286 | $5K |
| Group One Trading LLC | 0.00% | New | 173 | $3K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Reduce -42.0% | 164 | $3K |
| Vermillion & White Wealth Management Group, LLC | 0.00% | No change | 107 | $2K |
| Daiwa Securities Group Inc. | 0.00% | No change | 80 | $1K |
| US Bancorp \de | 0.00% | No change | 37 | $581 |
| Rise Advisors, LLC | 0.00% | No change | 28 | $439 |
| Caldwell Trust Co | 0.00% | No change | 20 | $314 |
| Global Wealth Strategies & Associates | 0.00% | New | 18 | $282 |
| Arax Advisory Partners | 0.00% | New | 15 | $235 |
| GAMMA Investing LLC | 0.00% | New | 8 | $126 |
| National Bank of Canada | 0.00% | Reduce -79.5% | 8 | $125 |
| Osaic Holdings, Inc. | 0.00% | New | 2 | $31 |
| SBI Securities Co., Ltd. | 0.00% | New | 1 | $16 |
"% of holder's portfolio" is TECX's weight in each manager's 13F, not the share of Tectonic Therapeutic Inc. the manager owns.