Tectonic TherapeuticTECX
13F holders, Q1 2026 (March 31)111holders +6
25new positions
19sold out
4famous investors
$30.90avg. 13F price*
At the end of Q1 2026, 111 institutions reported holding Tectonic Therapeutic Inc. (TECX) in their 13F filings, up 6 from Q4 2025. 25 opened new positions and 19 sold out. The largest holders were FMR LLC ($87.1M), TCG Crossover Management, LLC ($37.2M) and Aberdeen Group plc ($35.3M). 4 famous investors held it, including Steve Cohen (0.0% of Point72 Asset Management's portfolio), David E. Shaw (0.0% of D. E. Shaw & Co.'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 Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 25 | $81.0M |
| Exits | 19 | $16.9M |
All 13F filers, Q4 2025 → Q1 2026: 3,047,200 shares bought and 2,950,885 shares sold, net +96,315 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 111 holders
| FMR LLC | 0.00% | Add +0.3% | 2,816,494 | $87.1M |
| TCG Crossover Management, LLC | 1.07% | New | 1,204,891 | $37.2M |
| Aberdeen Group plc | 0.06% | No change | 1,141,824 | $35.3M |
| BlackRock, Inc. | 0.00% | Add +0.7% | 860,352 | $26.6M |
| Braidwell LP | 1.00% | Reduce -8.7% | 847,151 | $26.2M |
| First Light Asset Management, LLC | 1.79% | New | 647,743 | $20.0M |
| Baker Bros. Advisors LP | 0.11% | Reduce -32.7% | 607,788 | $18.8M |
| 5AM Venture Management, LLC | 5.21% | No change | 606,660 | $18.8M |
| Vanguard Capital Management LLC | 0.00% | — | 473,532 | $14.6M |
| Vestal Point Capital, LP | 0.28% | No change | 328,000 | $10.1M |
| Bollard Group LLC | 0.29% | No change | 302,953 | $9.4M |
| Kennedy Capital Management LLC | 0.19% | Add +37.0% | 286,682 | $8.9M |
| Geode Capital Management, LLC | 0.00% | Add +1.8% | 268,273 | $8.3M |
| Marshall Wace, LLP | 0.01% | Add +642.6% | 229,595 | $7.1M |
| Orbimed Advisors LLC | 0.16% | Reduce -60.6% | 226,600 | $7.0M |
| State Street Corp. | 0.00% | Add +2.1% | 213,505 | $6.6M |
| Squarepoint Ops LLC | 0.01% | Reduce -17.6% | 164,419 | $5.1M |
| T. Rowe Price Associates Inc. | 0.00% | New | 164,055 | $5.1M |
| Ikarian Capital, LLC | 0.70% | New | 157,537 | $4.9M |
| Ameriprise Financial Inc. | 0.00% | New | 143,432 | $4.4M |
| Opaleye Management Inc. | 0.50% | Reduce -42.7% | 123,000 | $3.8M |
| Soleus Capital Management, L.P. | 0.15% | New | 121,684 | $3.8M |
| D. E. Shaw & Co. | 0.00% | Reduce -3.4% | 116,120 | $3.6M |
| Wells Fargo & Company | 0.00% | Reduce -6.4% | 112,664 | $3.5M |
| Woodline Partners LP | 0.01% | Reduce -50.0% | 100,000 | $3.1M |
| ExodusPoint Capital Management, LP | 0.03% | Reduce -24.7% | 83,679 | $2.6M |
| Prosight Management, LP | 0.40% | Reduce -66.0% | 79,872 | $2.5M |
| Northern Trust Corp. | 0.00% | Add +8.4% | 78,353 | $2.4M |
| Point72 Asset Management | 0.00% | Reduce -86.1% | 68,598 | $2.1M |
| Vanguard Fiduciary Trust Co. | 0.00% | — | 67,895 | $2.1M |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Reduce -6.5% | 66,994 | $2.1M |
| Morgan Stanley | 0.00% | Reduce -31.3% | 64,848 | $2.0M |
| Raymond James Financial Inc. | 0.00% | Add +17.6% | 64,196 | $2.0M |
| Vanguard Portfolio Management LLC | 0.00% | — | 63,607 | $2.0M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -32.7% | 62,426 | $1.9M |
| Millennium Management | 0.00% | Reduce -80.6% | 58,348 | $1.8M |
| JPMorgan Chase & Co. | 0.00% | Add +918.7% | 58,870 | $1.7M |
| Boothbay Fund Management, LLC | 0.03% | New | 46,137 | $1.4M |
| PFM Health Sciences, LP | 0.15% | Add +8.0% | 46,129 | $1.4M |
| Jump Financial, LLC | 0.02% | Add +9.1% | 43,098 | $1.3M |
| Tetragon Partners GP Ltd | 0.23% | New | 37,588 | $1.2M |
| Aldebaran Capital, LLC | 0.88% | Reduce -0.5% | 37,184 | $1.1M |
| Sei Investments Co. | 0.00% | Add +141.8% | 36,870 | $1.1M |
| UBS Group AG | 0.00% | Reduce -3.9% | 29,987 | $927K |
| Wellington Management Group LLP | 0.00% | Reduce -21.8% | 29,240 | $904K |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -10.3% | 29,110 | $900K |
| Clearstead Advisors, LLC | 0.01% | Add +311.7% | 26,760 | $827K |
| Monimus Capital Management, LP | 0.23% | Add +0.6% | 26,753 | $827K |
| Bank of New York Mellon Corp | 0.00% | Reduce -4.3% | 24,760 | $765K |
| TD Asset Management Inc | 0.00% | New | 20,400 | $631K |
| Sectoral Asset Management Inc. | 0.52% | Reduce -54.9% | 19,059 | $628K |
| Gsa Capital Partners LLP | 0.04% | Reduce -70.2% | 18,873 | $583K |
| AQR Capital Management | 0.00% | New | 16,934 | $523K |
| Susquehanna International Group, LLP | 0.00% | Reduce -89.3% | 16,175 | $500K |
| Alps Advisors Inc. | 0.00% | Reduce -0.5% | 15,286 | $472K |
| Rhumbline Advisers | 0.00% | Reduce -1.2% | 14,027 | $434K |
| Manufacturers Life Insurance Company, The | 0.00% | New | 13,929 | $431K |
| Virtus Investment Advisers, LLC | 0.12% | Add +2.5% | 13,799 | $427K |
| ADAR1 Capital Management, LLC | 0.02% | Reduce -56.7% | 13,001 | $402K |
| American Century Companies Inc. | 0.00% | New | 12,534 | $387K |
| Creative Planning | 0.00% | New | 12,446 | $385K |
| Nuveen, LLC | 0.00% | Reduce -15.9% | 12,033 | $372K |
| XTX Topco Ltd | 0.01% | New | 11,621 | $359K |
| Bank of America Corp. | 0.00% | Add +24.3% | 11,466 | $354K |
| Dimensional Fund Advisors LP | 0.00% | Add +0.0% | 10,077 | $311K |
| Deutsche Bank AG | 0.00% | Add +23.1% | 9,345 | $289K |
| Invesco Ltd. | 0.00% | New | 7,675 | $237K |
| AlphaCentric Advisors LLC | 0.21% | Add +5.8% | 6,849 | $212K |
| MetLife Investment Management, LLC | 0.00% | No change | 6,724 | $208K |
| Barclays PLC | 0.00% | Reduce -70.1% | 6,706 | $207K |
| China Universal Asset Management Co., Ltd. | 0.01% | Add +4.7% | 6,332 | $196K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +2.7% | 5,215 | $161K |
| Nisa Investment Advisors, LLC | 0.00% | No change | 5,000 | $155K |
| New York State Common Retirement Fund | 0.00% | Reduce -8.0% | 4,600 | $142K |
| Vanguard Global Advisers, LLC | 0.00% | — | 3,964 | $123K |
| BNP Paribas Financial Markets | 0.00% | Reduce -0.1% | 2,816 | $87K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 2,638 | $82K |
| Cwm, LLC | 0.00% | Add +292.5% | 1,829 | $57K |
| Caption Management, LLC | 0.00% | New | 1,449 | $45K |
| Simplex Trading, LLC | 0.00% | Reduce -85.2% | 1,351 | $42K |
| Citigroup Inc. | 0.00% | Add +11.0% | 1,147 | $35K |
| US Bancorp \de | 0.00% | Add +2970.3% | 1,136 | $35K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 1,122 | $35K |
| Legal & General Group Plc | 0.00% | Reduce -4.8% | 1,000 | $31K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +7.7% | 979 | $30K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +21.5% | 914 | $28K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -8.4% | 851 | $26K |
| California State Teachers Retirement System | 0.00% | Reduce -12.0% | 595 | $18K |
| HighMark Wealth Management LLC | 0.01% | No change | 587 | $18K |
| Federation des caisses Desjardins du Quebec | 0.00% | No change | 500 | $15K |
| GF Fund Management Co. LTD. | 0.00% | Add +13.1% | 415 | $13K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +120.8% | 382 | $12K |
| Rockefeller Capital Management L.P. | 0.00% | New | 370 | $11K |
| GAMMA Investing LLC | 0.00% | Add +1037.9% | 330 | $10K |
| Sterling Capital Management LLC | 0.00% | Reduce -41.7% | 313 | $10K |
| Farther Finance Advisors, LLC | 0.00% | Reduce -72.7% | 102 | $3K |
| Allworth Financial LP | 0.00% | Add +4.8% | 65 | $2K |
| Marshall & Sterling Wealth Advisors Inc. | 0.00% | New | 50 | $2K |
| Essential Partners LLC | 0.00% | New | 37 | $1K |
| PNC Financial Services Group, Inc. | 0.00% | New | 26 | $804 |
| Caldwell Trust Co | 0.00% | No change | 20 | $618 |
| EverSource Wealth Advisors, LLC | 0.00% | Add +850.0% | 19 | $588 |
| Global Wealth Strategies & Associates | 0.00% | No change | 18 | $556 |
| Fortitude Family Office, LLC | 0.00% | New | 15 | $464 |
| Huntington National Bank | 0.00% | New | 13 | $402 |
| Rothschild Investment LLC | 0.00% | New | 11 | $340 |
| Sunbelt Securities, Inc. | 0.00% | Add +60.0% | 8 | $247 |
| True Wealth Design, LLC | 0.00% | Add +40.0% | 7 | $217 |
| MAI Capital Management | 0.00% | New | 7 | $217 |
| Root Financial Partners, LLC | 0.00% | New | 5 | $155 |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Reduce -98.2% | 3 | $93 |
"% of holder's portfolio" is TECX's weight in each manager's 13F, not the share of Tectonic Therapeutic Inc. the manager owns.