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, 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 |
|---|---|---|---|---|---|
| SBI Securities Co., Ltd. | 1 | $16 | 0.00% | +1 | New |
| Advisor Group Holdings, Inc. | 2 | $31 | 0.00% | +2 | New |
| National Bank of Canada | 8 | $125 | 0.00% | −31−79.5% | Reduced |
| GAMMA Investing LLC | 8 | $126 | 0.00% | +8 | New |
| SRS Capital Advisors, Inc. | 15 | $235 | 0.00% | +15 | New |
| Global Wealth Strategies & Associates | 18 | $282 | 0.00% | +18 | New |
| Caldwell Trust Co | 20 | $314 | 0.00% | 00.0% | Unchanged |
| Rise Advisors, LLC | 28 | $439 | 0.00% | 00.0% | Unchanged |
| US Bancorp | 37 | $581 | 0.00% | 00.0% | Unchanged |
| Daiwa Securities Group Inc. | 80 | $1.00K | 0.00% | 00.0% | Unchanged |
| Vermillion & White Wealth Management Group, LLC | 107 | $1.68K | 0.00% | 00.0% | Unchanged |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 164 | $2.57K | 0.00% | −119−42.0% | Reduced |
| Group One Trading, L.P. | 173 | $2.71K | 0.00% | +173 | New |
| Royal Bank of Canada | 286 | $5.00K | 0.00% | −396−58.1% | Reduced |
| Amalgamated Bank | 375 | $6.00K | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 384 | $6.00K | 0.00% | +19+5.2% | Added |
| GF Fund Management Co. Ltd. | 403 | $6.32K | 0.00% | +26+6.9% | Added |
| Sterling Capital Management LLC | 633 | $9.93K | 0.00% | +382+152.2% | Added |
| California State Teachers Retirement System | 684 | $10.7K | 0.00% | +684 | New |
| Mirae Asset Global Investments Co., Ltd. | 723 | $11.3K | 0.00% | +2+0.3% | Added |
| Simplex Trading, LLC | 768 | $12.0K | 0.00% | +768 | New |
| Russell Investments Group, Ltd. | 910 | $14.3K | 0.00% | +910 | New |
| Federation des caisses Desjardins du Quebec | 1,000 | $15.7K | 0.00% | +1,000 | New |
| Legal & General Group Plc | 1,050 | $16.5K | 0.00% | 00.0% | Unchanged |
| Point72 (DIFC) Ltd | 1,103 | $17.3K | 0.00% | +1,103 | New |
| Ameritas Investment Partners, Inc. | 1,122 | $17.6K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 1,158 | $18.2K | 0.00% | −2,921−71.6% | Reduced |
| Tower Research Capital LLC (TRC) | 1,465 | $23.0K | 0.00% | +218+17.5% | Added |
| Clearstead Advisors, LLC | 1,500 | $23.5K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 2,422 | $38.0K | 0.00% | −13,892−85.2% | Reduced |
| Police & Firemen's Retirement System of New Jersey | 2,638 | $41.4K | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 3,966 | $62.2K | 0.04% | +3,247+451.6% | Added |
| New York State Common Retirement Fund | 5,000 | $78.5K | 0.00% | 00.0% | Unchanged |
| Virtus Investment Advisers, Inc. | 5,071 | $79.6K | 0.02% | +881+21.0% | Added |
| Mirae Asset Global ETFs Holdings Ltd. | 5,134 | $80.6K | 0.00% | −878−14.6% | Reduced |
| JPMorgan Chase & Co | 5,924 | $92.9K | 0.00% | −624−9.5% | Reduced |
| Bank of America Corp | 6,365 | $99.9K | 0.00% | −557−8.0% | Reduced |
| MetLife Investment Management | 6,724 | $105.5K | 0.00% | 00.0% | Unchanged |
| China Universal Asset Management Co., Ltd. | 6,880 | $107.9K | 0.01% | +3,130+83.5% | Added |
| Quest Partners LLC | 7,299 | $114.5K | 0.01% | +4,934+208.6% | Added |
| Clarius Group, LLC | 10,130 | $158.9K | 0.01% | 00.0% | Unchanged |
| Trexquant Investment LP | 10,662 | $167.3K | 0.00% | +10,662 | New |
| XTX Topco Ltd | 10,856 | $170.3K | 0.01% | +10,856 | New |
| Engineers Gate Manager LP | 11,093 | $174.0K | 0.00% | +11,093 | New |
| Rangeley Capital, LLC | 12,000 | $188.3K | 0.18% | +12,000 | New |
| ExodusPoint Capital Management, LP | 13,017 | $204.2K | 0.00% | +13,017 | New |
| Nuveen, LLC | 14,304 | $224.4K | 0.00% | 00.0% | Unchanged |
| DLD Asset Management, LP | 15,000 | $235.3K | 0.03% | +15,000 | New |
| State of Wisconsin Investment Board | 15,559 | $244.1K | 0.00% | +15,559 | New |
| Rhumbline Advisers | 15,993 | $250.9K | 0.00% | +18+0.1% | Added |
| Barclays PLC | 17,976 | $282.0K | 0.00% | −3,915−17.9% | Reduced |
| Monimus Capital Management, LP | 23,894 | $374.9K | 0.28% | 00.0% | Unchanged |
| Soleus Capital Management, L.P. | 25,000 | $392.3K | 0.02% | −51,841−67.5% | Reduced |
| Marshall Wace, LLP | 25,076 | $393.4K | 0.00% | +14,398+134.8% | Added |
| Bank of New York Mellon Corp | 26,133 | $410.0K | 0.00% | +875+3.5% | Added |
| Quadrature Capital Ltd | 26,272 | $411.4K | 0.00% | +26,272 | New |
| Jane Street Group, LLC | 28,720 | $450.6K | 0.00% | +28,720 | New |
| Charles Schwab Investment Management Inc | 32,358 | $507.7K | 0.00% | −70.0% | Reduced |
| Wellington Management Group LLP | 37,362 | $586.2K | 0.00% | +8,817+30.9% | Added |
| Aldebaran Capital, LLC | 38,502 | $604.1K | 0.55% | −1,756−4.4% | Reduced |
| Windmill Hill Asset Management Ltd | 40,023 | $628.0K | 0.16% | 00.0% | Unchanged |
| Connor, Clark & Lunn Investment Management Ltd. | 43,885 | $688.6K | 0.00% | +8,177+22.9% | Added |
| Raymond James Financial Inc | 51,931 | $814.8K | 0.00% | +30,387+141.0% | Added |
| ADAR1 Capital Management, LLC | 56,007 | $878.8K | 0.09% | −17,498−23.8% | Reduced |
| Squarepoint Ops LLC | 65,435 | $1.03M | 0.00% | −19,934−23.4% | Reduced |
| UBS Group AG | 66,460 | $1.04M | 0.00% | +32,222+94.1% | Added |
| Jain Global LLC | 71,504 | $1.12M | 0.01% | +71,504 | New |
| Knott David M Jr | 74,000 | $1.16M | 0.49% | 00.0% | Unchanged |
| Northern Trust Corp | 83,231 | $1.31M | 0.00% | +4,157+5.3% | Added |
| Renaissance Technologies LLC | 93,400 | $1.47M | 0.00% | +6,413+7.4% | Added |
| Goldman Sachs Group Inc | 96,866 | $1.52M | 0.00% | +96,866 | New |
| Baker Bros. Advisors LP | 100,000 | $1.57M | 0.01% | 00.0% | Unchanged |
| Wells Fargo & Company | 102,473 | $1.61M | 0.00% | +29,701+40.8% | Added |
| Morgan Stanley | 104,733 | $1.64M | 0.00% | −55,697−34.7% | Reduced |
| Sphera Funds Management Ltd. | 115,908 | $1.82M | 0.43% | +115,908 | New |
| Superstring Capital Management LP | 119,286 | $1.87M | 1.84% | +40,228+50.9% | Added |
| Ally Bridge Group (NY) LLC | 138,595 | $2.17M | 1.82% | −25,088−15.3% | Reduced |
| State Street Corp | 165,531 | $2.60M | 0.00% | +34,490+26.3% | Added |
| Tang Capital Management LLC | 179,166 | $2.81M | 0.11% | 00.0% | Unchanged |
| StemPoint Capital LP | 188,999 | $2.97M | 0.60% | +148,999+372.5% | Added |
| Sectoral Asset Management Inc | 192,770 | $3.02M | 1.87% | +93,800+94.8% | Added |
| Woodline Partners LP | 200,000 | $3.14M | 0.01% | −121,637−37.8% | Reduced |
| First Light Asset Management, LLC | 202,393 | $3.18M | 0.30% | +202,393 | New |
| Kennedy Capital Management, Inc. | 208,776 | $3.28M | 0.07% | +208,776 | New |
| Millennium Management LLC | 238,170 | $3.74M | 0.00% | +163,281+218.0% | Added |
| Polygon Management Ltd. | 243,728 | $3.82M | 0.56% | +14,896+6.5% | Added |
| Pale Fire Capital SE | 259,726 | $4.08M | 0.45% | +259,726 | New |
| Geode Capital Management, LLC | 269,353 | $4.23M | 0.00% | −2,904−1.1% | Reduced |
| Citadel Advisors LLC | 298,388 | $4.68M | 0.00% | +133,342+80.8% | Added |
| Bollard Group LLC | 302,953 | $4.75M | 0.12% | 00.0% | Unchanged |
| Standard Life Aberdeen plc | 356,176 | $5.59M | 0.01% | +356,176 | New |
| Prosight Management, LP | 379,254 | $5.95M | 1.43% | −62,802−14.2% | Reduced |
| Point72 Asset Management, L.P. | 421,755 | $6.62M | 0.01% | +190,723+82.6% | Added |
| 5AM Venture Management, LLC | 511,660 | $8.03M | 2.94% | 00.0% | Unchanged |
| Vanguard Group Inc | 569,480 | $8.94M | 0.00% | −14,913−2.6% | Reduced |
| Farallon Capital Management, L.L.C. | 640,000 | $10.0M | 0.06% | −213,050−25.0% | Reduced |
| Braidwell LP | 736,867 | $11.6M | 0.34% | +736,867 | New |
| BlackRock, Inc. | 827,853 | $13.0M | 0.00% | +66,556+8.7% | Added |
| FMR LLC | 2,806,781 | $44.0M | 0.00% | +5,905+0.2% | Added |
| Deep Track Capital, LP | 0 | $0 | 0.00% | −1,401,938−100.0% | Sold out |