Tectonic Therapeutic, Inc. - TECX

Detailed investor-level table based on 13F positions.

Shareholders (13F)

Quarter: Q1 2026 · Compare: Q4 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 2,816,494 87,057 0.0% 0.0% 1 +9,052 0.32% Q1 2026 May 15, 2026
TCG Crossover Management, LLC History New 1,204,891 37,243 1.07% 2 +1,204,891 New Q1 2026 May 15, 2026
Aberdeen Group plc History No change 1,141,824 35,293 0.06% 0.04% 3 0 0.0% Q1 2026 Apr 29, 2026
BlackRock, Inc. History Added to 860,352 26,593 0.0% 0.0% 4 +5,989 0.7% Q1 2026 May 13, 2026
BRAIDWELL LP History Reduced 847,151 26,185 0.87% 0.62% 5 -80,373 -8.67% Q1 2026 May 15, 2026
First Light Asset Management, LLC History New 647,743 20,021 1.79% 6 +647,743 New Q1 2026 May 15, 2026
BAKER BROS. ADVISORS LP History Reduced 607,788 18,786 0.11% 0.11% 7 -295,612 -32.72% Q1 2026 May 15, 2026
5AM Venture Management, LLC History No change 606,660 18,751 5.21% 3.98% 8 0 0.0% Q1 2026 May 15, 2026
VANGUARD CAPITAL MANAGEMENT LLC History New 473,532 14,636 0.0% 9 +473,532 New Q1 2026 May 15, 2026
VANGUARD GROUP INC History No change 599,898 12,513 0.0% 0.0% 10 0 0.0% Q4 2025 Jan 29, 2026
Vestal Point Capital, LP History No change 328,000 10,138 0.28% 0.23% 11 0 0.0% Q1 2026 May 15, 2026
Bollard Group LLC History No change 302,953 9,364 0.28% 0.16% 12 0 0.0% Q1 2026 May 14, 2026
SUSQUEHANNA INTERNATIONAL GROUP, LLP History Added to 293,475 9,071 0.0% 0.0% 13 +54,562 22.84% Q1 2026 May 15, 2026
KENNEDY CAPITAL MANAGEMENT LLC History Added to 286,682 8,861 0.19% 0.09% 14 +77,457 37.02% Q1 2026 May 13, 2026
GEODE CAPITAL MANAGEMENT, LLC History Added to 268,273 8,294 0.0% 0.0% 15 +4,713 1.79% Q1 2026 May 15, 2026
MARSHALL WACE, LLP History Added to 229,595 7,096 0.01% 0.0% 16 +198,677 642.59% Q1 2026 May 14, 2026
ORBIMED ADVISORS LLC History Reduced 226,600 7,004 0.14% 0.24% 17 -348,000 -60.56% Q1 2026 May 15, 2026
STATE STREET CORP History Added to 213,505 6,599 0.0% 0.0% 18 +4,380 2.09% Q1 2026 May 15, 2026
Squarepoint Ops LLC History Reduced 164,419 5,082 0.01% 0.0% 19 -35,227 -17.64% Q1 2026 May 15, 2026
PRICE T ROWE ASSOCIATES INC /MD/ History New 164,055 5,072 0.0% 20 +164,055 New Q1 2026 May 15, 2026
Ikarian Capital, LLC History New 157,537 4,869 0.4% 21 +157,537 New Q1 2026 May 15, 2026
AMERIPRISE FINANCIAL INC History New 143,432 4,433 0.0% 22 +143,432 New Q1 2026 May 15, 2026
Opaleye Management Inc. History Reduced 123,000 3,801 0.5% 0.59% 23 -91,747 -42.72% Q1 2026 May 15, 2026
Soleus Capital Management, L.P. History New 121,684 3,761 0.15% 24 +121,684 New Q1 2026 May 14, 2026
D. E. Shaw & Co., Inc. History Reduced 116,120 3,589 0.0% 0.0% 25 -4,130 -3.43% Q1 2026 May 15, 2026
WELLS FARGO & COMPANY/MN History Reduced 112,664 3,482 0.0% 0.0% 26 -7,747 -6.43% Q1 2026 May 11, 2026
Woodline Partners LP History Reduced 100,000 3,091 0.01% 0.02% 27 -100,000 -50.0% Q1 2026 May 15, 2026
ExodusPoint Capital Management, LP History Reduced 83,679 2,586 0.02% 0.02% 28 -27,509 -24.74% Q1 2026 May 14, 2026
Prosight Management, LP History Reduced 79,872 2,468 0.4% 1.01% 29 -155,128 -66.01% Q1 2026 May 15, 2026
NORTHERN TRUST CORP History Added to 78,353 2,421 0.0% 0.0% 30 +6,098 8.44% Q1 2026 May 14, 2026
JANE STREET GROUP, LLC History Added to 69,000 2,132 0.0% 0.0% 31 +49,679 257.12% Q1 2026 May 12, 2026
Point72 Asset Management, L.P. History Reduced 68,598 2,120 0.0% 0.01% 32 -423,734 -86.07% Q1 2026 May 15, 2026
VANGUARD FIDUCIARY TRUST CO History New 67,895 2,098 0.0% 33 +67,895 New Q1 2026 May 08, 2026
Connor, Clark & Lunn Investment Management Ltd. History Reduced 66,994 2,070 0.0% 0.0% 34 -4,663 -6.51% Q1 2026 May 11, 2026
MORGAN STANLEY History Reduced 64,848 2,004 0.0% 0.0% 35 -29,587 -31.33% Q1 2026 May 15, 2026
RAYMOND JAMES FINANCIAL INC History Added to 64,196 1,984 0.0% 0.0% 36 +9,595 17.57% Q1 2026 May 14, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC History New 63,607 1,966 0.0% 37 +63,607 New Q1 2026 May 08, 2026
GOLDMAN SACHS GROUP INC History Reduced 62,426 1,929 0.0% 0.0% 38 -30,277 -32.66% Q1 2026 May 15, 2026
MILLENNIUM MANAGEMENT LLC History Reduced 58,348 1,803 0.0% 0.0% 39 -242,472 -80.6% Q1 2026 May 15, 2026
JPMORGAN CHASE & CO History Added to 58,870 1,699 0.0% 0.0% 40 +53,091 918.69% Q1 2026 May 13, 2026
KOTLER KEVIN History No change 80,000 1,668 0.39% 0.39% 41 0 0.0% Q4 2025 Feb 17, 2026
CITADEL ADVISORS LLC History Reduced 52,400 1,619 0.0% 0.0% 42 -332,817 -86.4% Q1 2026 May 15, 2026
BOOTHBAY FUND MANAGEMENT, LLC History New 46,137 1,426 0.02% 43 +46,137 New Q1 2026 May 15, 2026
PFM Health Sciences, LP History Added to 46,129 1,425 0.13% 0.09% 44 +3,405 7.97% Q1 2026 May 15, 2026
Jump Financial, LLC History Added to 43,098 1,332 0.02% 0.01% 45 +3,598 9.11% Q1 2026 May 14, 2026
Tetragon Partners GP Ltd History New 37,588 1,161 0.23% 46 +37,588 New Q1 2026 May 15, 2026
Aldebaran Capital, LLC History Reduced 37,184 1,149 0.88% 0.7% 47 -169 -0.45% Q1 2026 May 07, 2026
SEI INVESTMENTS CO History Added to 36,870 1,139 0.0% 0.0% 48 +21,619 141.75% Q1 2026 May 13, 2026
UBS Group AG History Reduced 29,987 926 0.0% 0.0% 49 -1,228 -3.93% Q1 2026 May 05, 2026
WELLINGTON MANAGEMENT GROUP LLP History Reduced 29,240 903 0.0% 0.0% 50 -8,139 -21.77% Q1 2026 May 15, 2026
CHARLES SCHWAB INVESTMENT MANAGEMENT INC History Reduced 29,110 899 0.0% 0.0% 51 -3,351 -10.32% Q1 2026 May 15, 2026
Clearstead Advisors, LLC History Added to 26,760 827 0.01% 0.0% 52 +20,260 311.69% Q1 2026 May 06, 2026
MONIMUS CAPITAL MANAGEMENT, LP History Added to 26,753 826 0.23% 0.37% 53 +159 0.6% Q1 2026 May 15, 2026
Caption Management, LLC History New 26,449 817 0.0% 54 +26,449 New Q1 2026 May 15, 2026
Bank of New York Mellon Corp History Reduced 24,760 765 0.0% 0.0% 55 -1,098 -4.25% Q1 2026 May 05, 2026
TD ASSET MANAGEMENT INC History New 20,400 630 0.0% 56 +20,400 New Q1 2026 May 11, 2026
SECTORAL ASSET MANAGEMENT INC History Reduced 19,059 628 0.52% 0.71% 57 -23,196 -54.9% Q1 2026 May 15, 2026
GSA CAPITAL PARTNERS LLP History Reduced 18,873 583 0.04% 0.11% 58 -44,403 -70.17% Q1 2026 May 08, 2026
AQR CAPITAL MANAGEMENT LLC History New 16,934 523 0.0% 59 +16,934 New Q1 2026 May 15, 2026
ALPS ADVISORS INC History Reduced 15,286 472 0.0% 0.0% 60 -83 -0.54% Q1 2026 May 08, 2026
RHUMBLINE ADVISERS History Reduced 14,027 433 0.0% 0.0% 61 -169 -1.19% Q1 2026 May 12, 2026
MANUFACTURERS LIFE INSURANCE COMPANY, THE History New 13,929 430 0.0% 62 +13,929 New Q1 2026 May 15, 2026
Virtus Investment Advisers, LLC History Added to 13,799 426 0.12% 0.08% 63 +337 2.5% Q1 2026 May 14, 2026
ADAR1 Capital Management, LLC History Reduced 13,001 401 0.02% 0.05% 64 -17,006 -56.67% Q1 2026 May 15, 2026
AMERICAN CENTURY COMPANIES INC History New 12,534 387 0.0% 65 +12,534 New Q1 2026 May 15, 2026
Creative Planning History New 12,446 384 0.0% 66 +12,446 New Q1 2026 May 12, 2026
AlphaQuest LLC History No change 18,187 379 0.02% 0.02% 67 0 0.0% Q4 2025 Feb 09, 2026
Nuveen, LLC History Reduced 12,033 371 0.0% 0.0% 68 -2,271 -15.88% Q1 2026 Apr 30, 2026
XTX Topco Ltd History New 11,621 359 0.01% 69 +11,621 New Q1 2026 May 15, 2026
BANK OF AMERICA CORP /DE/ History Added to 11,466 354 0.0% 0.0% 70 +2,241 24.29% Q1 2026 May 15, 2026
DIMENSIONAL FUND ADVISORS LP History Added to 10,077 311 0.0% 0.0% 71 +2 0.02% Q1 2026 May 07, 2026
DEUTSCHE BANK AG\ History Added to 9,345 288 0.0% 0.0% 72 +1,756 23.14% Q1 2026 May 06, 2026
Invesco Ltd. History New 7,675 237 0.0% 73 +7,675 New Q1 2026 May 12, 2026
AlphaCentric Advisors LLC History Added to 6,849 211 0.21% 0.13% 75 +373 5.76% Q1 2026 May 07, 2026
Clarius Group, LLC History No change 10,130 211 0.01% 0.01% 74 0 0.0% Q4 2025 Jan 14, 2026
BARCLAYS PLC History Reduced 6,706 207 0.0% 0.0% 76 -15,737 -70.12% Q1 2026 May 14, 2026
MetLife Investment Management, LLC History No change 6,724 207 0.0% 0.0% 77 0 0.0% Q1 2026 May 14, 2026
China Universal Asset Management Co., Ltd. History Added to 6,332 195 0.01% 0.01% 78 +282 4.66% Q1 2026 Apr 27, 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. History Added to 5,215 161 0.0% 0.0% 79 +136 2.68% Q1 2026 May 15, 2026
NISA INVESTMENT ADVISORS, LLC History No change 5,000 154 0.0% 0.0% 80 0 0.0% Q1 2026 Apr 30, 2026
NEW YORK STATE COMMON RETIREMENT FUND History Reduced 4,600 142 0.0% 0.0% 81 -400 -8.0% Q1 2026 May 06, 2026
Vanguard Global Advisers, LLC History New 3,964 122 0.0% 82 +3,964 New Q1 2026 May 08, 2026
BNP PARIBAS FINANCIAL MARKETS History Reduced 2,816 87 0.0% 0.0% 83 -3 -0.11% Q1 2026 May 12, 2026
Police & Firemen's Retirement System of New Jersey History No change 2,638 81 0.0% 0.0% 84 0 0.0% Q1 2026 Apr 29, 2026
CWM, LLC History Added to 1,829 56 0.0% 0.0% 85 +1,363 292.49% Q1 2026 May 14, 2026
SIMPLEX TRADING, LLC History Reduced 1,351 41 0.0% 0.0% 86 -7,791 -85.22% Q1 2026 May 14, 2026
US BANCORP \DE\ History Added to 1,136 35 0.0% 87 +1,099 2970.27% Q1 2026 May 14, 2026
CITIGROUP INC History Added to 1,147 35 0.0% 0.0% 88 +114 11.04% Q1 2026 May 11, 2026
Ameritas Investment Partners, Inc. History No change 1,122 34 0.0% 0.0% 89 0 0.0% Q1 2026 May 13, 2026
Mirae Asset Global Investments Co., Ltd. History Added to 979 30 0.0% 0.0% 91 +70 7.7% Q1 2026 May 04, 2026
Legal & General Group Plc History Reduced 1,000 30 0.0% 0.0% 90 -50 -4.76% Q1 2026 May 08, 2026
Tower Research Capital LLC (TRC) History Added to 914 28 0.0% 0.0% 92 +162 21.54% Q1 2026 May 15, 2026
Russell Investments Group, Ltd. History Reduced 851 26 0.0% 0.0% 93 -78 -8.4% Q1 2026 May 08, 2026
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM History Reduced 595 18 0.0% 0.0% 94 -81 -11.98% Q1 2026 May 15, 2026
HighMark Wealth Management LLC History No change 587 18 0.01% 0.0% 95 0 0.0% Q1 2026 May 05, 2026
Federation des caisses Desjardins du Quebec History No change 500 15 0.0% 0.0% 96 0 0.0% Q1 2026 May 13, 2026
GF FUND MANAGEMENT CO. LTD. History Added to 415 12 0.0% 0.0% 97 +48 13.08% Q1 2026 Apr 15, 2026
Rockefeller Capital Management L.P. History New 370 11 0.0% 99 +370 New Q1 2026 May 14, 2026
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC History Added to 382 11 0.0% 0.0% 98 +209 120.81% Q1 2026 May 13, 2026
GAMMA Investing LLC History Added to 330 10 0.0% 100 +301 1037.93% Q1 2026 Apr 06, 2026
Sterling Capital Management LLC History Reduced 313 9 0.0% 0.0% 101 -224 -41.71% Q1 2026 Apr 22, 2026
Farther Finance Advisors, LLC History Reduced 102 3 0.0% 0.0% 102 -271 -72.65% Q1 2026 Apr 07, 2026
Allworth Financial LP History Added to 65 2 0.0% 0.0% 103 +3 4.84% Q1 2026 May 14, 2026
Marshall & Sterling Wealth Advisors Inc. History New 50 1 0.0% 104 +50 New Q1 2026 May 07, 2026
Essential Partners LLC History New 37 1 0.0% 105 +37 New Q1 2026 May 21, 2026
Pale Fire Capital SE History Closed out 0 0 0.37% -261,026 -100.0% Q1 2026 May 14, 2026
PERCEPTIVE ADVISORS LLC History Closed out 0 0 0.09% -250,000 -100.0% Q1 2026 May 29, 2026
DIADEMA PARTNERS LP History Closed out 0 0 0.36% -100,600 -100.0% Q1 2026 May 15, 2026
Knott David M Jr History Closed out 0 0 0.71% -74,000 -100.0% Q1 2026 May 14, 2026
Schonfeld Strategic Advisors LLC History Closed out 0 0 0.0% -39,109 -100.0% Q1 2026 May 15, 2026
BIT Capital GmbH History Closed out 0 0 0.02% -30,000 -100.0% Q1 2026 May 13, 2026
Aquatic Capital Management LLC History Closed out 0 0 0.01% -22,262 -100.0% Q1 2026 May 15, 2026
Palumbo Wealth Management LLC History Closed out 0 0 0.07% -13,046 -100.0% Q1 2026 May 12, 2026
Marex Group plc History Closed out 0 0 0.0% -12,501 -100.0% Q1 2026 May 13, 2026
Quadrature Capital Ltd History Closed out 0 0 0.0% -10,014 -100.0% Q1 2026 May 15, 2026
LOS ANGELES CAPITAL MANAGEMENT LLC History Closed out 0 0 0.0% -6,410 -100.0% Q1 2026 May 08, 2026
CANADA PENSION PLAN INVESTMENT BOARD History Closed out 0 0 0.0% -6,300 -100.0% Q1 2026 May 15, 2026
GROUP ONE TRADING LLC History Closed out 0 0 0.0% -541 -100.0% Q1 2026 May 13, 2026
ROYAL BANK OF CANADA History Closed out 0 0 0.0% -521 -100.0% Q1 2026 May 15, 2026
AMALGAMATED BANK History Closed out 0 0 0.0% -345 -100.0% Q1 2026 May 08, 2026
Zurcher Kantonalbank (Zurich Cantonalbank) History Reduced 3 0 0.0% -161 -98.17% Q1 2026 May 15, 2026
Vermillion & White Wealth Management Group, LLC History Closed out 0 0 0.0% -107 -100.0% Q1 2026 May 15, 2026
Daiwa Securities Group Inc. History Closed out 0 0 0.0% -80 -100.0% Q1 2026 May 13, 2026
OPTIMA CAPITAL LLC History Closed out 0 0 -31 -100.0% Q1 2026 May 04, 2026
PNC FINANCIAL SERVICES GROUP, INC. History New 26 0 +26 New Q1 2026 May 08, 2026
EverSource Wealth Advisors, LLC History Added to 19 0 +17 850.0% Q1 2026 May 15, 2026
Fortitude Family Office, LLC History New 15 0 +15 New Q1 2026 Apr 15, 2026
HUNTINGTON NATIONAL BANK History New 13 0 +13 New Q1 2026 May 15, 2026
ROTHSCHILD INVESTMENT LLC History New 11 0 +11 New Q1 2026 May 07, 2026
MAI Capital Management History New 7 0 +7 New Q1 2026 May 15, 2026
Root Financial Partners, LLC History New 5 0 +5 New Q1 2026 Apr 24, 2026
Sunbelt Securities, Inc. History Added to 8 0 +3 60.0% Q1 2026 May 15, 2026
True Wealth Design, LLC History Added to 7 0 +2 40.0% Q1 2026 Apr 13, 2026
OSAIC HOLDINGS, INC. History Closed out 0 0 -1 -100.0% Q1 2026 May 15, 2026
Global Wealth Strategies & Associates History No change 18 0 0 0.0% Q1 2026 Apr 03, 2026
Caldwell Trust Co History No change 20 0 0 0.0% Q1 2026 Apr 22, 2026