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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 2022

Institutional positions in Tectonic Therapeutic, Inc. as of Dec 31, 2022. 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
45
−9 vs. Q3 2022
Shares held
20.8M
−3.62M (−14.8%) vs. Q3 2022
Total value
$14.8M
−$859.0K (−5.5%) vs. Q3 2022
New holders
5
8 more added
Sold out
14
15 more reduced

Compare with Q3 2022: 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 2022: 45 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 2022: $14.8M
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 2022

Shares, value and share of portfolio for each institution holding Tectonic Therapeutic, Inc.; share changes are against Q3 2022.

Institutions holding TECX in Q4 2022
InstitutionSharesValue% of portfolioChange in sharesAction
UBS Group AG65$460.00%−22,366−99.7%Reduced
Bank of America Corp101$720.00%+24+31.2%Added
Royal Bank of Canada1,865$1.00K0.00%−392−17.4%Reduced
CWM, LLC2,000$1.00K0.00%00.0%Unchanged
Group One Trading, L.P.3,007$2.14K0.00%00.0%Unchanged
BNP Paribas Arbitrage, SA4,586$3.27K0.00%+328+7.7%Added
Federated Hermes, Inc.7,181$5.12K0.00%−2,360−24.7%Reduced
Goldman Sachs Group Inc10,082$7.19K0.00%−696,756−98.6%Reduced
Two Sigma Securities, LLC14,163$10.1K0.00%+14,163New
Tower Research Capital LLC (TRC)15,138$11.0K0.00%+4,289+39.5%Added
HSBC Holdings PLC16,556$11.6K0.00%−276−1.6%Reduced
Bank of New York Mellon Corp16,788$12.0K0.00%00.0%Unchanged
Colonial River Wealth Management, LLC16,940$12.1K0.01%00.0%Unchanged
Barclays PLC21,935$15.6K0.00%00.0%Unchanged
JPMorgan Chase & Co23,598$17.0K0.00%−45,068−65.6%Reduced
Needham Investment Management LLC24,513$17.5K0.00%00.0%Unchanged
Bailard, Inc.25,792$18.4K0.00%+25,792New
Jane Street Group, LLC29,040$20.7K0.00%+29,040New
Deutsche Bank AG35,000$25.0K0.00%00.0%Unchanged
Charles Schwab Investment Management Inc37,231$26.5K0.00%00.0%Unchanged
Ergoteles LLC46,906$33.4K0.00%−62,844−57.3%Reduced
Northern Trust Corp73,938$52.7K0.00%00.0%Unchanged
Wells Fargo & Company89,462$63.8K0.00%−5,537−5.8%Reduced
LPL Financial LLC122,578$87.4K0.00%+122,578New
State Street Corp140,852$100.4K0.00%00.0%Unchanged
Bridgeway Capital Management, LLC156,000$111.2K0.00%00.0%Unchanged
Privium Fund Management (UK) Ltd263,304$187.7K0.14%+153,704+140.2%Added
Boston Private Wealth LLC284,365$202.7K0.00%00.0%Unchanged
New Leaf Venture Partners, L.L.C.315,550$225.0K0.16%00.0%Unchanged
Two Sigma Investments, LP317,851$226.6K0.00%−74,773−19.0%Reduced
Two Sigma Advisers, LP341,800$243.7K0.00%−50,400−12.9%Reduced
Geode Capital Management, LLC385,915$275.0K0.00%−943−0.2%Reduced
Morgan Stanley543,427$387.4K0.00%+31,707+6.2%Added
Citadel Advisors LLC582,969$415.6K0.00%+70,787+13.8%Added
MPM Oncology Impact Management LP647,918$461.9K0.12%00.0%Unchanged
Millennium Management LLC688,685$491.0K0.00%−20,852−2.9%Reduced
Farallon Capital Management, L.L.C.740,000$527.5K0.00%00.0%Unchanged
Renaissance Technologies LLC862,267$615.0K0.00%−359,874−29.4%Reduced
Natixis880,000$627.4K0.00%+880,000New
Aisling Capital Management LP1,009,779$716.9K0.47%00.0%Unchanged
Vanguard Group Inc1,158,257$825.7K0.00%+943+0.1%Added
Acadian Asset Management LLC1,469,892$1.05M0.01%+288,135+24.4%Added
BlackRock Inc.1,520,340$1.08M0.00%−483,231−24.1%Reduced
GMT Capital Corp3,309,859$2.36M0.11%−184,631−5.3%Reduced
Atlas Venture Life Science Advisors, LLC4,520,863$3.22M0.39%00.0%Unchanged
K2 Principal Fund, L.P.0$00.00%−2,738,410−100.0%Sold out
Gsa Capital Partners LLP0$00.00%−177,333−100.0%Sold out
D. E. Shaw & Co., Inc.0$00.00%−97,643−100.0%Sold out
Susquehanna Fundamental Investments, LLC0$00.00%−68,826−100.0%Sold out
Penn Mutual Asset Management, LLC0$00.00%−37,306−100.0%Sold out
Sawtooth Solutions, LLC0$00.00%−34,484−100.0%Sold out
Qube Research & Technologies Ltd0$00.00%−30,928−100.0%Sold out
LMR Partners LLP0$00.00%−18,020−100.0%Sold out
Balyasny Asset Management LLC0$00.00%−13,412−100.0%Sold out
Running Point Capital Advisors, LLC0$00.00%−10,000−100.0%Sold out
FMR LLC0$00.00%−1,333−100.0%Sold out
Citigroup Inc0$00.00%−525−100.0%Sold out
Daiwa Securities Group Inc.0$00.00%−80−100.0%Sold out
China Universal Asset Management Co., Ltd.0$00.00%−410−100.0%Sold out