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 3 sales; 122 institutions reported holding it in 13F filings for Q2 2026, worth $479.9M in total; no superinvestor holds it.
13F holders, Q3 2025
Institutional positions in Tectonic Therapeutic, Inc. as of Sep 30, 2025. 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
- 99
- +17 vs. Q2 2025
- Shares held
- 12.1M
- −7.63K (−0.1%) vs. Q2 2025
- Total value
- $189.9M
- −$50.8M (−21.1%) vs. Q2 2025
- New holders
- 28
- 29 more added
- Sold out
- 11
- 21 more reduced
Compare with Q2 2025: 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, Q3 2025
Shares, value and share of portfolio for each institution holding Tectonic Therapeutic, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| FMR LLC | 2,806,781 | $44.0M | 0.00% | +5,905+0.2% | Added |
| BlackRock, Inc. | 827,853 | $13.0M | 0.00% | +66,556+8.7% | Added |
| Braidwell LP | 736,867 | $11.6M | 0.34% | +736,867 | New |
| Farallon Capital Management, L.L.C. | 640,000 | $10.0M | 0.06% | −213,050−25.0% | Reduced |
| Vanguard Group Inc | 569,480 | $8.94M | 0.00% | −14,913−2.6% | Reduced |
| 5AM Venture Management, LLC | 511,660 | $8.03M | 2.94% | 00.0% | Unchanged |
| Point72 Asset Management, L.P. | 421,755 | $6.62M | 0.01% | +190,723+82.6% | Added |
| Prosight Management, LP | 379,254 | $5.95M | 1.43% | −62,802−14.2% | Reduced |
| Standard Life Aberdeen plc | 356,176 | $5.59M | 0.01% | +356,176 | New |
| Bollard Group LLC | 302,953 | $4.75M | 0.12% | 00.0% | Unchanged |
| Citadel Advisors LLC | 298,388 | $4.68M | 0.00% | +133,342+80.8% | Added |
| Geode Capital Management, LLC | 269,353 | $4.23M | 0.00% | −2,904−1.1% | Reduced |
| Pale Fire Capital SE | 259,726 | $4.08M | 0.45% | +259,726 | New |
| Polygon Management Ltd. | 243,728 | $3.82M | 0.56% | +14,896+6.5% | Added |
| Millennium Management LLC | 238,170 | $3.74M | 0.00% | +163,281+218.0% | Added |
| Kennedy Capital Management, Inc. | 208,776 | $3.28M | 0.07% | +208,776 | New |
| First Light Asset Management, LLC | 202,393 | $3.18M | 0.30% | +202,393 | New |
| Woodline Partners LP | 200,000 | $3.14M | 0.01% | −121,637−37.8% | Reduced |
| Sectoral Asset Management Inc | 192,770 | $3.02M | 1.87% | +93,800+94.8% | Added |
| StemPoint Capital LP | 188,999 | $2.97M | 0.60% | +148,999+372.5% | Added |
| Tang Capital Management LLC | 179,166 | $2.81M | 0.11% | 00.0% | Unchanged |
| State Street Corp | 165,531 | $2.60M | 0.00% | +34,490+26.3% | Added |
| Ally Bridge Group (NY) LLC | 138,595 | $2.17M | 1.82% | −25,088−15.3% | Reduced |
| Superstring Capital Management LP | 119,286 | $1.87M | 1.84% | +40,228+50.9% | Added |
| Sphera Funds Management Ltd. | 115,908 | $1.82M | 0.43% | +115,908 | New |
| Morgan Stanley | 104,733 | $1.64M | 0.00% | −55,697−34.7% | Reduced |
| Wells Fargo & Company | 102,473 | $1.61M | 0.00% | +29,701+40.8% | Added |
| Baker Bros. Advisors LP | 100,000 | $1.57M | 0.01% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 96,866 | $1.52M | 0.00% | +96,866 | New |
| Renaissance Technologies LLC | 93,400 | $1.47M | 0.00% | +6,413+7.4% | Added |
| Northern Trust Corp | 83,231 | $1.31M | 0.00% | +4,157+5.3% | Added |
| Knott David M Jr | 74,000 | $1.16M | 0.49% | 00.0% | Unchanged |
| Jain Global LLC | 71,504 | $1.12M | 0.01% | +71,504 | New |
| UBS Group AG | 66,460 | $1.04M | 0.00% | +32,222+94.1% | Added |
| Squarepoint Ops LLC | 65,435 | $1.03M | 0.00% | −19,934−23.4% | Reduced |
| ADAR1 Capital Management, LLC | 56,007 | $878.8K | 0.09% | −17,498−23.8% | Reduced |
| Raymond James Financial Inc | 51,931 | $814.8K | 0.00% | +30,387+141.0% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 43,885 | $688.6K | 0.00% | +8,177+22.9% | Added |
| Windmill Hill Asset Management Ltd | 40,023 | $628.0K | 0.16% | 00.0% | Unchanged |
| Aldebaran Capital, LLC | 38,502 | $604.1K | 0.55% | −1,756−4.4% | Reduced |
| Wellington Management Group LLP | 37,362 | $586.2K | 0.00% | +8,817+30.9% | Added |
| Charles Schwab Investment Management Inc | 32,358 | $507.7K | 0.00% | −70.0% | Reduced |
| Jane Street Group, LLC | 28,720 | $450.6K | 0.00% | +28,720 | New |
| Quadrature Capital Ltd | 26,272 | $411.4K | 0.00% | +26,272 | New |
| Bank of New York Mellon Corp | 26,133 | $410.0K | 0.00% | +875+3.5% | Added |
| Marshall Wace, LLP | 25,076 | $393.4K | 0.00% | +14,398+134.8% | Added |
| Soleus Capital Management, L.P. | 25,000 | $392.3K | 0.02% | −51,841−67.5% | Reduced |
| Monimus Capital Management, LP | 23,894 | $374.9K | 0.28% | 00.0% | Unchanged |
| Barclays PLC | 17,976 | $282.0K | 0.00% | −3,915−17.9% | Reduced |
| Rhumbline Advisers | 15,993 | $250.9K | 0.00% | +18+0.1% | Added |
| State of Wisconsin Investment Board | 15,559 | $244.1K | 0.00% | +15,559 | New |
| DLD Asset Management, LP | 15,000 | $235.3K | 0.03% | +15,000 | New |
| Nuveen, LLC | 14,304 | $224.4K | 0.00% | 00.0% | Unchanged |
| ExodusPoint Capital Management, LP | 13,017 | $204.2K | 0.00% | +13,017 | New |
| Rangeley Capital, LLC | 12,000 | $188.3K | 0.18% | +12,000 | New |
| Engineers Gate Manager LP | 11,093 | $174.0K | 0.00% | +11,093 | New |
| XTX Topco Ltd | 10,856 | $170.3K | 0.01% | +10,856 | New |
| Trexquant Investment LP | 10,662 | $167.3K | 0.00% | +10,662 | New |
| Clarius Group, LLC | 10,130 | $158.9K | 0.01% | 00.0% | Unchanged |
| Quest Partners LLC | 7,299 | $114.5K | 0.01% | +4,934+208.6% | Added |
| China Universal Asset Management Co., Ltd. | 6,880 | $107.9K | 0.01% | +3,130+83.5% | Added |
| MetLife Investment Management | 6,724 | $105.5K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 6,365 | $99.9K | 0.00% | −557−8.0% | Reduced |
| JPMorgan Chase & Co | 5,924 | $92.9K | 0.00% | −624−9.5% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 5,134 | $80.6K | 0.00% | −878−14.6% | Reduced |
| Virtus Investment Advisers, Inc. | 5,071 | $79.6K | 0.02% | +881+21.0% | Added |
| New York State Common Retirement Fund | 5,000 | $78.5K | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 3,966 | $62.2K | 0.04% | +3,247+451.6% | Added |
| Police & Firemen's Retirement System of New Jersey | 2,638 | $41.4K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 2,422 | $38.0K | 0.00% | −13,892−85.2% | Reduced |
| Clearstead Advisors, LLC | 1,500 | $23.5K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 1,465 | $23.0K | 0.00% | +218+17.5% | Added |
| Citigroup Inc | 1,158 | $18.2K | 0.00% | −2,921−71.6% | Reduced |
| Ameritas Investment Partners, Inc. | 1,122 | $17.6K | 0.00% | 00.0% | Unchanged |
| Point72 (DIFC) Ltd | 1,103 | $17.3K | 0.00% | +1,103 | New |
| Legal & General Group Plc | 1,050 | $16.5K | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 1,000 | $15.7K | 0.00% | +1,000 | New |
| Russell Investments Group, Ltd. | 910 | $14.3K | 0.00% | +910 | New |
| Simplex Trading, LLC | 768 | $12.0K | 0.00% | +768 | New |
| Mirae Asset Global Investments Co., Ltd. | 723 | $11.3K | 0.00% | +2+0.3% | Added |
| California State Teachers Retirement System | 684 | $10.7K | 0.00% | +684 | New |
| Sterling Capital Management LLC | 633 | $9.93K | 0.00% | +382+152.2% | Added |
| GF Fund Management Co. Ltd. | 403 | $6.32K | 0.00% | +26+6.9% | Added |
| Amalgamated Bank | 375 | $6.00K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 384 | $6.00K | 0.00% | +19+5.2% | Added |
| Royal Bank of Canada | 286 | $5.00K | 0.00% | −396−58.1% | Reduced |
| Group One Trading, L.P. | 173 | $2.71K | 0.00% | +173 | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 164 | $2.57K | 0.00% | −119−42.0% | Reduced |
| Vermillion & White Wealth Management Group, LLC | 107 | $1.68K | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 80 | $1.00K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 37 | $581 | 0.00% | 00.0% | Unchanged |
| Rise Advisors, LLC | 28 | $439 | 0.00% | 00.0% | Unchanged |
| Caldwell Trust Co | 20 | $314 | 0.00% | 00.0% | Unchanged |
| Global Wealth Strategies & Associates | 18 | $282 | 0.00% | +18 | New |
| SRS Capital Advisors, Inc. | 15 | $235 | 0.00% | +15 | New |
| GAMMA Investing LLC | 8 | $126 | 0.00% | +8 | New |
| National Bank of Canada | 8 | $125 | 0.00% | −31−79.5% | Reduced |
| Advisor Group Holdings, Inc. | 2 | $31 | 0.00% | +2 | New |
| SBI Securities Co., Ltd. | 1 | $16 | 0.00% | +1 | New |
| Deep Track Capital, LP | 0 | $0 | 0.00% | −1,401,938−100.0% | Sold out |