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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, Q4 2021

Institutional positions in Tectonic Therapeutic, Inc. as of Dec 31, 2021. 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
94
−7 vs. Q3 2021
Shares held
35.0M
+5.23M (+17.6%) vs. Q3 2021
Total value
$134.9M
−$31.6M (−19.0%) vs. Q3 2021
New holders
17
24 more added
Sold out
24
43 more reduced

Compare with Q3 2021: 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.

Institutional holdersQ4 2021: 94 institutions
Q1 2021: 99 institutionsQ2 2021: 97 institutionsQ3 2021: 101 institutionsQ4 2021: 94 institutionsQ1 2022: 81 institutionsQ2 2022: 64 institutionsQ3 2022: 54 institutionsQ4 2022: 45 institutionsQ1 2023: 48 institutionsQ2 2023: 41 institutionsQ3 2023: 48 institutionsQ4 2023: 45 institutionsQ1 2024: 47 institutionsQ2 2024: 40 institutionsQ3 2024: 53 institutionsQ4 2024: 70 institutionsQ1 2025: 78 institutionsQ2 2025: 82 institutionsQ3 2025: 99 institutionsQ4 2025: 105 institutionsQ1 2026: 111 institutionsQ2 2026: 122 institutions
Value heldQ4 2021: $134.9M
Q1 2021: $423.5MQ2 2021: $287.7MQ3 2021: $166.5MQ4 2021: $134.9MQ1 2022: $38.8MQ2 2022: $23.8MQ3 2022: $15.7MQ4 2022: $14.8MQ1 2023: $22.8MQ2 2023: $18.9MQ3 2023: $39.9MQ4 2023: $32.2MQ1 2024: $35.2MQ2 2024: $88.1MQ3 2024: $217.4MQ4 2024: $354.9MQ1 2025: $198.8MQ2 2025: $240.7MQ3 2025: $189.9MQ4 2025: $288.1MQ1 2026: $426.8MQ2 2026: $479.9M
Institutions holding TECX and their total value by quarter
QuarterHoldersValue
Q2 2026122$479.9M
Q1 2026111$426.8M
Q4 2025105$288.1M
Q3 202599$189.9M
Q2 202582$240.7M
Q1 202578$198.8M
Q4 202470$354.9M
Q3 202453$217.4M
Q2 202440$88.1M
Q1 202447$35.2M
Q4 202345$32.2M
Q3 202348$39.9M
Q2 202341$18.9M
Q1 202348$22.8M
Q4 202245$14.8M
Q3 202254$15.7M
Q2 202264$23.8M
Q1 202281$38.8M
Q4 202194$134.9M
Q3 2021101$166.5M
Q2 202197$287.7M
Q1 202199$423.5M

Institutions, Q4 2021

Shares, value and share of portfolio for each institution holding Tectonic Therapeutic, Inc.; share changes are against Q3 2021.

Institutions holding TECX in Q4 2021
InstitutionSharesValue% of portfolioChange in sharesAction
Daiwa Securities Group Inc.80$00.00%00.0%Unchanged
Captrust Financial Advisors38$00.00%−8−17.4%Reduced
Toronto Dominion Bank4$00.00%+4New
Raffa Wealth Management, LLC166$6390.00%00.0%Unchanged
Newbridge Financial Services Group, Inc.367$1.00K0.00%00.0%Unchanged
FMR LLC500$2.00K0.00%−83,337−99.4%Reduced
TCI Wealth Advisors, Inc.1,092$4.00K0.00%+1,092New
Rockefeller Capital Management L.P.1,430$5.00K0.00%−25,220−94.6%Reduced
CWM, LLC2,000$8.00K0.00%+2,000New
Point72 Hong Kong Ltd2,983$11.0K0.00%−1,601−34.9%Reduced
Ameritas Investment Partners, Inc.2,729$11.0K0.00%00.0%Unchanged
Legal & General Group Plc3,029$12.0K0.00%−9,029−74.9%Reduced
Group One Trading, L.P.3,507$14.0K0.00%00.0%Unchanged
Quantbot Technologies LP4,800$18.0K0.00%−3,400−41.5%Reduced
UBS Group AG4,987$19.0K0.00%+2,987+149.4%Added
Royal Bank of Canada9,440$36.0K0.00%+3,597+61.6%Added
Algert Global LLC10,070$39.0K0.00%+10,070New
BNP Paribas Arbitrage, SA10,147$39.1K0.00%+482+5.0%Added
SG Americas Securities, LLC10,457$40.0K0.00%−16,070−60.6%Reduced
Needham Investment Management LLC10,513$40.0K0.01%−487−4.4%Reduced
Citigroup Inc10,932$42.0K0.00%−82,728−88.3%Reduced
Invesco Ltd.11,390$44.0K0.00%−7,434−39.5%Reduced
New York State Common Retirement Fund12,320$47.0K0.00%−26−0.2%Reduced
Trexquant Investment LP12,537$48.0K0.00%−24,931−66.5%Reduced
ExodusPoint Capital Management, LP13,278$51.0K0.00%−11,605−46.6%Reduced
Raymond James & Associates14,883$57.0K0.00%−308−2.0%Reduced
ProShare Advisors LLC14,423$57.0K0.00%+251+1.8%Added
State Board of Administration of Florida Retirement System14,939$58.0K0.00%00.0%Unchanged
HSBC Holdings PLC18,687$72.0K0.00%+18,687New
California State Teachers Retirement System19,503$75.0K0.00%−29,238−60.0%Reduced
First Republic Investment Management, Inc.20,000$77.0K0.00%00.0%Unchanged
American International Group, Inc.20,134$78.0K0.00%−603−2.9%Reduced
Prelude Capital Management, LLC20,300$78.0K0.00%+20,300New
Walleye Trading LLC20,428$79.0K0.00%−7,698−27.4%Reduced
Manufacturers Life Insurance Company, The21,176$82.0K0.00%−5,227−19.8%Reduced
Susquehanna International Group, LLP21,749$84.0K0.00%+9,631+79.5%Added
XTX Topco Ltd23,155$89.0K0.05%+23,155New
Bank of America Corp23,834$92.0K0.00%−8,162−25.5%Reduced
Cubist Systematic Strategies, LLC24,574$95.0K0.00%−22,417−47.7%Reduced
Tower Research Capital LLC (TRC)26,764$103.0K0.00%+19,909+290.4%Added
Susquehanna Fundamental Investments, LLC32,402$125.0K0.00%+32,402New
Alliancebernstein L.P.33,100$127.0K0.00%−2,500−7.0%Reduced
Russell Investments Group, Ltd.33,725$129.0K0.00%−11,351−25.2%Reduced
Caxton Associates LP36,725$141.0K0.02%+36,725New
Dimensional Fund Advisors LP46,007$177.0K0.00%+7,795+20.4%Added
Marshall Wace, LLP46,711$179.0K0.00%+35,451+314.8%Added
Rhumbline Advisers51,260$197.0K0.00%−690−1.3%Reduced
Voya Investment Management LLC51,746$199.0K0.00%+36,377+236.7%Added
HRT Financial LP54,975$211.0K0.00%−105,706−65.8%Reduced
Deutsche Bank AG58,003$224.0K0.00%−16,728−22.4%Reduced
D. E. Shaw & Co., Inc.59,469$229.0K0.00%+59,469New
PDT Partners, LLC59,700$230.0K0.02%−13,317−18.2%Reduced
Parametric Portfolio Associates LLC67,084$258.0K0.00%+15,764+30.7%Added
AQR Capital Management LLC75,771$292.0K0.00%+75,771New
Nomura Holdings Inc76,884$296.0K0.00%+76,884New
Ameriprise Financial Inc83,690$322.0K0.00%−1,229−1.4%Reduced
Wells Fargo & Company91,942$354.0K0.00%+33,447+57.2%Added
Kennedy Capital Management, Inc.97,597$376.0K0.01%−3,108−3.1%Reduced
Charles Schwab Investment Management Inc97,485$376.0K0.00%+5,603+6.1%Added
Barclays PLC101,106$389.0K0.00%+44,355+78.2%Added
Maven Securities LTD102,041$393.0K0.05%+102,041New
Nuveen Asset Management, LLC134,127$440.0K0.00%−36,869−21.6%Reduced
Connor, Clark & Lunn Investment Management Ltd.119,818$461.0K0.00%+52,952+79.2%Added
Jacobs Levy Equity Management, Inc133,448$514.0K0.00%−146,789−52.4%Reduced
Walleye Capital LLC145,159$559.0K0.02%+26,287+22.1%Added
Bank of New York Mellon Corp148,881$573.0K0.00%+3,425+2.4%Added
Point72 Asset Management, L.P.150,000$578.0K0.00%−80,000−34.8%Reduced
Bridgeway Capital Management, LLC153,100$589.0K0.01%+153,100New
Gsa Capital Partners LLP218,137$840.0K0.11%+29,369+15.6%Added
Morgan Stanley298,604$1.15M0.00%−61,516−17.1%Reduced
Eversept Partners, LP304,989$1.17M0.10%−54,491−15.2%Reduced
New Leaf Venture Partners, L.L.C.315,550$1.22M0.44%00.0%Unchanged
Renaissance Technologies LLC321,000$1.24M0.00%−84,100−20.8%Reduced
Northern Trust Corp345,038$1.33M0.00%−13,354−3.7%Reduced
Acadian Asset Management LLC348,953$1.34M0.01%+304,609+686.9%Added
Two Sigma Advisers, LP413,800$1.59M0.00%+128,500+45.0%Added
Two Sigma Investments, LP471,934$1.82M0.00%+144,686+44.2%Added
Citadel Advisors LLC522,409$2.01M0.00%−557,919−51.6%Reduced
Millennium Management LLC636,377$2.45M0.00%−203,572−24.2%Reduced
MPM Oncology Impact Management LP647,918$2.49M0.45%−213,940−24.8%Reduced
Geode Capital Management, LLC650,207$2.50M0.00%+73,323+12.7%Added
Janus Henderson Group PLC732,832$2.83M0.00%+732,832New
Farallon Capital Management, L.L.C.740,000$2.85M0.02%00.0%Unchanged
State Street Corp838,502$3.23M0.00%−62,919−7.0%Reduced
Aisling Capital Management LP1,009,779$3.89M1.37%00.0%Unchanged
Deep Track Capital, LP1,050,132$4.04M0.30%+1,050,132New
Goldman Sachs Group Inc1,381,758$5.32M0.00%+949,620+219.7%Added
Camber Capital Management LP1,633,333$6.29M0.24%−1,500,000−47.9%Reduced
Vanguard Group Inc1,679,107$6.46M0.00%−41,381−2.4%Reduced
GMT Capital Corp2,594,914$9.99M0.77%+461,700+21.6%Added
Federated Hermes, Inc.2,595,453$9.99M0.02%+207,073+8.7%Added
BlackRock Inc.3,456,088$13.3M0.00%−158,367−4.4%Reduced
Atlas Venture Life Science Advisors, LLC4,520,863$17.4M1.60%+4,520,863New
JPMorgan Chase & Co4,536,431$17.5M0.00%−73,171−1.6%Reduced
Swiss National Bank0$00.00%−80,100−100.0%Sold out
DekaBank Deutsche Girozentrale0$00.00%−71,000−100.0%Sold out
Jump Financial, LLC0$00.00%−44,438−100.0%Sold out
Virginia Retirement Systems Et Al0$00.00%−43,300−100.0%Sold out
Mitsubishi UFJ Kokusai Asset Management Co., Ltd.0$00.00%−34,509−100.0%Sold out
UBS Asset Management Americas Inc0$00.00%−32,093−100.0%Sold out