Tectonic Therapeutic, Inc. - TECX
Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 3 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| FMR LLC | History | Added to | 2,807,442 | 58,563 | 0.0% | 0.0% | 1 | +661 | 0.02% | Q4 2025 | Feb 17, 2026 |
| Aberdeen Group plc | History | Added to | 1,141,824 | 23,818 | 0.04% | 0.01% | 2 | +785,648 | 220.58% | Q4 2025 | Jan 16, 2026 |
| BRAIDWELL LP | History | Added to | 927,524 | 19,348 | 0.62% | 0.34% | 3 | +190,657 | 25.87% | Q4 2025 | Feb 17, 2026 |
| BAKER BROS. ADVISORS LP | History | Added to | 903,400 | 18,844 | 0.11% | 0.01% | 4 | +803,400 | 803.4% | Q4 2025 | Feb 17, 2026 |
| BlackRock, Inc. | History | Added to | 854,363 | 17,822 | 0.0% | 0.0% | 5 | +26,510 | 3.2% | Q4 2025 | Feb 12, 2026 |
| 5AM Venture Management, LLC | History | Added to | 606,660 | 12,654 | 3.98% | 2.94% | 6 | +95,000 | 18.57% | Q4 2025 | Feb 17, 2026 |
| VANGUARD GROUP INC | History | Added to | 599,898 | 12,513 | 0.0% | 0.0% | 7 | +30,418 | 5.34% | Q4 2025 | Jan 29, 2026 |
| ORBIMED ADVISORS LLC | History | New | 574,600 | 11,986 | 0.24% | — | 8 | +574,600 | New | Q4 2025 | Feb 17, 2026 |
| Point72 Asset Management, L.P. | History | Added to | 492,332 | 10,270 | 0.01% | 0.01% | 9 | +70,577 | 16.73% | Q4 2025 | Feb 17, 2026 |
| CITADEL ADVISORS LLC | History | Added to | 385,217 | 8,035 | 0.0% | 0.0% | 10 | +86,829 | 29.1% | Q4 2025 | Feb 17, 2026 |
| Vestal Point Capital, LP | History | New | 328,000 | 6,842 | 0.23% | — | 11 | +328,000 | New | Q4 2025 | Feb 17, 2026 |
| Bollard Group LLC | History | No change | 302,953 | 6,320 | 0.16% | 0.11% | 12 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Added to | 300,820 | 6,275 | 0.0% | 0.0% | 13 | +62,650 | 26.3% | Q4 2025 | Feb 17, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Reduced | 263,560 | 5,498 | 0.0% | 0.0% | 14 | -5,793 | -2.15% | Q4 2025 | Feb 09, 2026 |
| Pale Fire Capital SE | History | Added to | 261,026 | 5,445 | 0.37% | 0.45% | 15 | +1,300 | 0.5% | Q4 2025 | Feb 13, 2026 |
| PERCEPTIVE ADVISORS LLC | History | New | 250,000 | 5,215 | 0.09% | — | 16 | +250,000 | New | Q4 2025 | Feb 17, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Added to | 238,913 | 4,983 | 0.0% | 0.0% | 17 | +44,513 | 22.9% | Q4 2025 | Feb 17, 2026 |
| Prosight Management, LP | History | Reduced | 235,000 | 4,902 | 1.01% | 1.39% | 18 | -144,254 | -38.04% | Q4 2025 | Feb 13, 2026 |
| Opaleye Management Inc. | History | New | 214,747 | 4,479 | 0.59% | — | 19 | +214,747 | New | Q4 2025 | Feb 17, 2026 |
| KENNEDY CAPITAL MANAGEMENT LLC | History | Added to | 209,225 | 4,364 | 0.09% | 0.07% | 20 | +449 | 0.22% | Q4 2025 | Feb 13, 2026 |
| STATE STREET CORP | History | Added to | 209,125 | 4,362 | 0.0% | 0.0% | 21 | +43,594 | 26.34% | Q4 2025 | Feb 13, 2026 |
| Woodline Partners LP | History | No change | 200,000 | 4,172 | 0.02% | 0.01% | 22 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Squarepoint Ops LLC | History | Added to | 199,646 | 4,164 | 0.0% | 0.0% | 23 | +134,211 | 205.11% | Q4 2025 | Feb 13, 2026 |
| WELLS FARGO & COMPANY/MN | History | Added to | 120,411 | 2,511 | 0.0% | 0.0% | 24 | +17,938 | 17.51% | Q4 2025 | Feb 13, 2026 |
| D. E. Shaw & Co., Inc. | History | New | 120,250 | 2,508 | 0.0% | — | 25 | +120,250 | New | Q4 2025 | Feb 17, 2026 |
| ExodusPoint Capital Management, LP | History | New | 111,188 | 2,319 | 0.02% | — | 26 | +111,188 | New | Q4 2025 | Feb 17, 2026 |
| DIADEMA PARTNERS LP | History | Added to | 100,600 | 2,098 | 0.36% | 0.4% | 27 | +600 | 0.6% | Q4 2025 | Feb 17, 2026 |
| MORGAN STANLEY | History | Reduced | 94,435 | 1,969 | 0.0% | 0.0% | 28 | -10,298 | -9.83% | Q4 2025 | Feb 13, 2026 |
| GOLDMAN SACHS GROUP INC | History | Reduced | 92,703 | 1,933 | 0.0% | 0.0% | 29 | -4,163 | -4.3% | Q4 2025 | Mar 25, 2026 |
| KOTLER KEVIN | History | New | 80,000 | 1,668 | 0.39% | — | 30 | +80,000 | New | Q4 2025 | Feb 17, 2026 |
| Knott David M Jr | History | No change | 74,000 | 1,543 | 0.71% | 0.47% | 31 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| NORTHERN TRUST CORP | History | Reduced | 72,255 | 1,507 | 0.0% | 0.0% | 32 | -10,976 | -13.19% | Q4 2025 | Feb 17, 2026 |
| Connor, Clark & Lunn Investment Management Ltd. | History | Added to | 71,657 | 1,494 | 0.0% | 0.0% | 33 | +27,772 | 63.28% | Q4 2025 | Feb 10, 2026 |
| GSA CAPITAL PARTNERS LLP | History | New | 63,276 | 1,320 | 0.11% | — | 34 | +63,276 | New | Q4 2025 | Feb 06, 2026 |
| RAYMOND JAMES FINANCIAL INC | History | Added to | 54,601 | 1,138 | 0.0% | 0.0% | 35 | +2,670 | 5.14% | Q4 2025 | Feb 18, 2026 |
| PFM Health Sciences, LP | History | New | 42,724 | 891 | 0.09% | — | 36 | +42,724 | New | Q4 2025 | Feb 17, 2026 |
| SECTORAL ASSET MANAGEMENT INC | History | Reduced | 42,255 | 881 | 0.71% | 1.87% | 37 | -150,515 | -78.08% | Q4 2025 | Feb 09, 2026 |
| Jump Financial, LLC | History | New | 39,500 | 823 | 0.01% | — | 38 | +39,500 | New | Q4 2025 | Feb 17, 2026 |
| Schonfeld Strategic Advisors LLC | History | New | 39,109 | 815 | 0.0% | — | 39 | +39,109 | New | Q4 2025 | Feb 17, 2026 |
| Aldebaran Capital, LLC | History | Reduced | 37,353 | 779 | 0.7% | 0.55% | 41 | -1,149 | -2.98% | Q4 2025 | Feb 12, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | History | Added to | 37,379 | 779 | 0.0% | 0.0% | 40 | +17 | 0.05% | Q4 2025 | Feb 17, 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | History | Added to | 32,461 | 677 | 0.0% | 0.0% | 42 | +103 | 0.32% | Q4 2025 | Feb 13, 2026 |
| UBS Group AG | History | Reduced | 31,215 | 651 | 0.0% | 0.0% | 43 | -35,245 | -53.03% | Q4 2025 | Jan 29, 2026 |
| MARSHALL WACE, LLP | History | Added to | 30,918 | 644 | 0.0% | 0.0% | 44 | +5,842 | 23.3% | Q4 2025 | Feb 13, 2026 |
| BIT Capital GmbH | History | New | 30,000 | 625 | 0.02% | — | 46 | +30,000 | New | Q4 2025 | Feb 11, 2026 |
| ADAR1 Capital Management, LLC | History | Reduced | 30,007 | 625 | 0.05% | 0.08% | 45 | -26,000 | -46.42% | Q4 2025 | Feb 18, 2026 |
| MONIMUS CAPITAL MANAGEMENT, LP | History | Added to | 26,594 | 554 | 0.37% | 0.23% | 47 | +2,700 | 11.3% | Q4 2025 | Feb 17, 2026 |
| Bank of New York Mellon Corp | History | Reduced | 25,858 | 539 | 0.0% | 0.0% | 48 | -275 | -1.05% | Q4 2025 | Feb 10, 2026 |
| BARCLAYS PLC | History | Added to | 22,443 | 468 | 0.0% | 0.0% | 49 | +4,467 | 24.85% | Q4 2025 | Feb 13, 2026 |
| Aquatic Capital Management LLC | History | New | 22,262 | 464 | 0.01% | — | 50 | +22,262 | New | Q4 2025 | Feb 17, 2026 |
| JANE STREET GROUP, LLC | History | Reduced | 19,321 | 403 | 0.0% | 0.0% | 51 | -9,399 | -32.73% | Q4 2025 | Feb 12, 2026 |
| AlphaQuest LLC | History | Added to | 18,187 | 379 | 0.02% | 0.01% | 52 | +10,888 | 149.17% | Q4 2025 | Feb 09, 2026 |
| ALPS ADVISORS INC | History | New | 15,369 | 320 | 0.0% | — | 53 | +15,369 | New | Q4 2025 | Feb 12, 2026 |
| SEI INVESTMENTS CO | History | New | 15,251 | 318 | 0.0% | — | 54 | +15,251 | New | Q4 2025 | Feb 13, 2026 |
| Nuveen, LLC | History | No change | 14,304 | 298 | 0.0% | 0.0% | 55 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| RHUMBLINE ADVISERS | History | Reduced | 14,196 | 296 | 0.0% | 0.0% | 56 | -1,797 | -11.24% | Q4 2025 | Feb 13, 2026 |
| Virtus Investment Advisers, LLC | History | Added to | 13,462 | 280 | 0.08% | 0.02% | 57 | +8,391 | 165.47% | Q4 2025 | Feb 17, 2026 |
| Palumbo Wealth Management LLC | History | New | 13,046 | 272 | 0.07% | — | 58 | +13,046 | New | Q4 2025 | Jan 21, 2026 |
| Marex Group plc | History | New | 12,501 | 260 | 0.0% | — | 59 | +12,501 | New | Q4 2025 | Feb 12, 2026 |
| Clarius Group, LLC | History | No change | 10,130 | 211 | 0.01% | 0.01% | 60 | 0 | 0.0% | Q4 2025 | Jan 14, 2026 |
| DIMENSIONAL FUND ADVISORS LP | History | New | 10,075 | 210 | 0.0% | — | 61 | +10,075 | New | Q4 2025 | Feb 12, 2026 |
| Quadrature Capital Ltd | History | Reduced | 10,014 | 208 | 0.0% | 0.0% | 62 | -16,258 | -61.88% | Q4 2025 | Feb 17, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Added to | 9,225 | 192 | 0.0% | 0.0% | 63 | +2,860 | 44.93% | Q4 2025 | Feb 17, 2026 |
| SIMPLEX TRADING, LLC | History | Added to | 9,142 | 190 | 0.0% | 0.0% | 64 | +8,374 | 1090.36% | Q4 2025 | Feb 11, 2026 |
| DEUTSCHE BANK AG\ | History | New | 7,589 | 158 | 0.0% | — | 65 | +7,589 | New | Q4 2025 | Feb 11, 2026 |
| MetLife Investment Management, LLC | History | No change | 6,724 | 140 | 0.0% | 0.0% | 66 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| AlphaCentric Advisors LLC | History | New | 6,476 | 135 | 0.13% | — | 68 | +6,476 | New | Q4 2025 | Feb 12, 2026 |
| Clearstead Advisors, LLC | History | Added to | 6,500 | 135 | 0.0% | 0.0% | 67 | +5,000 | 333.33% | Q4 2025 | Feb 09, 2026 |
| CANADA PENSION PLAN INVESTMENT BOARD | History | New | 6,300 | 131 | 0.0% | — | 69 | +6,300 | New | Q4 2025 | Feb 17, 2026 |
| China Universal Asset Management Co., Ltd. | History | Reduced | 6,050 | 126 | 0.01% | 0.01% | 70 | -830 | -12.06% | Q4 2025 | Jan 29, 2026 |
| JPMORGAN CHASE & CO | History | Reduced | 5,779 | 120 | 0.0% | 0.0% | 71 | -145 | -2.45% | Q4 2025 | Feb 11, 2026 |
| LOS ANGELES CAPITAL MANAGEMENT LLC | History | New | 6,410 | 112 | 0.0% | — | 72 | +6,410 | New | Q4 2025 | Feb 11, 2026 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | History | Reduced | 5,079 | 105 | 0.0% | 0.0% | 73 | -55 | -1.07% | Q4 2025 | Feb 17, 2026 |
| NISA INVESTMENT ADVISORS, LLC | History | New | 5,000 | 104 | 0.0% | — | 75 | +5,000 | New | Q4 2025 | Jan 15, 2026 |
| NEW YORK STATE COMMON RETIREMENT FUND | History | No change | 5,000 | 104 | 0.0% | 0.0% | 74 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Added to | 2,819 | 58 | 0.0% | 0.0% | 76 | +397 | 16.39% | Q4 2025 | Feb 10, 2026 |
| Police & Firemen's Retirement System of New Jersey | History | No change | 2,638 | 55 | 0.0% | 0.0% | 77 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| Ameritas Investment Partners, Inc. | History | No change | 1,122 | 23 | 0.0% | 0.0% | 78 | 0 | 0.0% | Q4 2025 | Feb 11, 2026 |
| CITIGROUP INC | History | Reduced | 1,033 | 21 | 0.0% | 0.0% | 80 | -125 | -10.79% | Q4 2025 | Feb 13, 2026 |
| Legal & General Group Plc | History | No change | 1,050 | 21 | 0.0% | 0.0% | 79 | 0 | 0.0% | Q4 2025 | Feb 09, 2026 |
| Russell Investments Group, Ltd. | History | Added to | 929 | 19 | 0.0% | 0.0% | 81 | +19 | 2.09% | Q4 2025 | Feb 17, 2026 |
| Mirae Asset Global Investments Co., Ltd. | History | Added to | 909 | 18 | 0.0% | 0.0% | 82 | +186 | 25.73% | Q4 2025 | Jan 26, 2026 |
| Tower Research Capital LLC (TRC) | History | Reduced | 752 | 15 | 0.0% | 0.0% | 83 | -713 | -48.67% | Q4 2025 | Feb 17, 2026 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | History | Reduced | 676 | 14 | 0.0% | 0.0% | 84 | -8 | -1.17% | Q4 2025 | Feb 17, 2026 |
| HighMark Wealth Management LLC | History | New | 587 | 12 | 0.0% | — | 85 | +587 | New | Q4 2025 | Feb 05, 2026 |
| GROUP ONE TRADING LLC | History | Added to | 541 | 11 | 0.0% | 0.0% | 86 | +368 | 212.72% | Q4 2025 | Feb 12, 2026 |
| Sterling Capital Management LLC | History | Reduced | 537 | 11 | 0.0% | 0.0% | 87 | -96 | -15.17% | Q4 2025 | Feb 13, 2026 |
| ROYAL BANK OF CANADA | History | New | 521 | 10 | 0.0% | — | 88 | +521 | New | Q4 2025 | Feb 17, 2026 |
| Federation des caisses Desjardins du Quebec | History | Reduced | 500 | 10 | 0.0% | 0.0% | 90 | -500 | -50.0% | Q4 2025 | Feb 12, 2026 |
| CWM, LLC | History | Added to | 466 | 10 | 0.0% | 0.0% | 89 | +82 | 21.35% | Q4 2025 | Jan 26, 2026 |
| Farther Finance Advisors, LLC | History | New | 373 | 7 | 0.0% | — | 92 | +373 | New | Q4 2025 | Jan 23, 2026 |
| GF FUND MANAGEMENT CO. LTD. | History | Reduced | 367 | 7 | 0.0% | 0.0% | 93 | -36 | -8.93% | Q4 2025 | Jan 27, 2026 |
| AMALGAMATED BANK | History | Reduced | 345 | 7 | 0.0% | 0.0% | 91 | -30 | -8.0% | Q4 2025 | Feb 05, 2026 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | History | New | 173 | 3 | 0.0% | — | 94 | +173 | New | Q4 2025 | Feb 13, 2026 |
| Zurcher Kantonalbank (Zurich Cantonalbank) | History | No change | 164 | 3 | 0.0% | 0.0% | 95 | 0 | 0.0% | Q4 2025 | Jan 27, 2026 |
| Daiwa Securities Group Inc. | History | No change | 80 | 2 | 0.0% | 0.0% | 96 | 0 | 0.0% | Q4 2025 | Feb 11, 2026 |
| Vermillion & White Wealth Management Group, LLC | History | No change | 107 | 2 | 0.0% | 0.0% | 97 | 0 | 0.0% | Q4 2025 | Feb 18, 2026 |
| Allworth Financial LP | History | New | 62 | 1 | 0.0% | — | 98 | +62 | New | Q4 2025 | Feb 05, 2026 |
| FARALLON CAPITAL MANAGEMENT LLC | History | Closed out | 0 | 0 | — | 0.04% | — | -640,000 | -100.0% | Q3 2025 | Feb 17, 2026 |
| Tetragon Partners GP Ltd | History | Closed out | 0 | 0 | — | 0.51% | — | -243,728 | -100.0% | Q3 2025 | Nov 14, 2025 |
| First Light Asset Management, LLC | History | Closed out | 0 | 0 | — | 0.3% | — | -202,393 | -100.0% | Q3 2025 | Nov 14, 2025 |
| STEMPOINT CAPITAL LP | History | Closed out | 0 | 0 | — | 0.59% | — | -188,999 | -100.0% | Q3 2025 | Nov 14, 2025 |
| TANG CAPITAL MANAGEMENT LLC | History | Closed out | 0 | 0 | — | 0.11% | — | -179,166 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Ally Bridge Group (NY) LLC | History | Closed out | 0 | 0 | — | 1.32% | — | -138,595 | -100.0% | Q3 2025 | Nov 14, 2025 |
| SUPERSTRING CAPITAL MANAGEMENT LP | History | Closed out | 0 | 0 | — | 1.84% | — | -119,286 | -100.0% | Q3 2025 | Nov 14, 2025 |
| SPHERA FUNDS MANAGEMENT LTD. | History | Closed out | 0 | 0 | — | 0.38% | — | -115,908 | -100.0% | Q3 2025 | Nov 14, 2025 |
| RENAISSANCE TECHNOLOGIES LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -93,400 | -100.0% | Q3 2025 | Nov 13, 2025 |
| Jain Global LLC | History | Closed out | 0 | 0 | — | 0.01% | — | -71,504 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Windmill Hill Asset Management Ltd | History | Closed out | 0 | 0 | — | 0.16% | — | -40,023 | -100.0% | Q3 2025 | Oct 31, 2025 |
| Soleus Capital Management, L.P. | History | Closed out | 0 | 0 | — | 0.02% | — | -25,000 | -100.0% | Q3 2025 | Nov 14, 2025 |
| STATE OF WISCONSIN INVESTMENT BOARD | History | Closed out | 0 | 0 | — | 0.0% | — | -15,559 | -100.0% | Q3 2025 | Nov 14, 2025 |
| DLD Asset Management, LP | History | Closed out | 0 | 0 | — | 0.02% | — | -15,000 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Rangeley Capital, LLC | History | Closed out | 0 | 0 | — | 0.16% | — | -12,000 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Engineers Gate Manager LP | History | Closed out | 0 | 0 | — | 0.0% | — | -11,093 | -100.0% | Q3 2025 | Nov 14, 2025 |
| XTX Topco Ltd | History | Closed out | 0 | 0 | — | 0.01% | — | -10,856 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Trexquant Investment LP | History | Closed out | 0 | 0 | — | 0.0% | — | -10,662 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Caitong International Asset Management Co., Ltd | History | Closed out | 0 | 0 | — | 0.04% | — | -3,966 | -100.0% | Q3 2025 | Nov 19, 2025 |
| OPTIMA CAPITAL LLC | History | New | 31 | 0 | — | — | — | +31 | New | Q4 2025 | Jan 23, 2026 |
| Rise Advisors, LLC | History | Closed out | 0 | 0 | — | — | — | -28 | -100.0% | Q3 2025 | Oct 08, 2025 |
| GAMMA Investing LLC | History | Added to | 29 | 0 | — | — | — | +21 | 262.5% | Q4 2025 | Jan 05, 2026 |
| Arax Advisory Partners | History | Closed out | 0 | 0 | — | — | — | -15 | -100.0% | Q3 2025 | Nov 14, 2025 |
| NATIONAL BANK OF CANADA /FI/ | History | Closed out | 0 | 0 | — | — | — | -8 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Sunbelt Securities, Inc. | History | New | 5 | 0 | — | — | — | +5 | New | Q4 2025 | Feb 20, 2026 |
| True Wealth Design, LLC | History | New | 5 | 0 | — | — | — | +5 | New | Q4 2025 | Jan 08, 2026 |
| EverSource Wealth Advisors, LLC | History | New | 2 | 0 | — | — | — | +2 | New | Q4 2025 | Feb 06, 2026 |
| OSAIC HOLDINGS, INC. | History | Reduced | 1 | 0 | — | — | — | -1 | -50.0% | Q4 2025 | Feb 17, 2026 |
| SBI Securities Co., Ltd. | History | Closed out | 0 | 0 | — | — | — | -1 | -100.0% | Q3 2025 | Nov 05, 2025 |
| US BANCORP \DE\ | History | No change | 37 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Jan 30, 2026 |
| Global Wealth Strategies & Associates | History | No change | 18 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Jan 02, 2026 |
| Caldwell Trust Co | History | No change | 20 | 0 | — | — | — | 0 | 0.0% | Q4 2025 | Jan 30, 2026 |