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.

Shareholders (13F)

Quarter: Q4 2025 · Compare: Q3 2025
13D/13G major owners: Ownership tab.
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