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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 3 sales; 122 institutions reported holding it in 13F filings for Q2 2026, worth $479.9M in total; no superinvestor holds it.

13F holders, Q2 2024

Institutional positions in Tectonic Therapeutic, Inc. as of Jun 30, 2024. 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
40
−7 vs. Q1 2024
Shares held
5.35M
+2.88M (+117.1%) vs. Q1 2024Converted for a 1-for-12 split
Total value
$88.1M
+$52.8M (+149.8%) vs. Q1 2024
New holders
4
10 more added
Sold out
11
14 more reduced

Compare with Q1 2024: 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 holdersQ2 2024: 40 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 heldQ2 2024: $88.1M
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, Q2 2024

Shares, value and share of portfolio for each institution holding Tectonic Therapeutic, Inc.; share changes are against Q1 2024.

Institutions holding TECX in Q2 2024
InstitutionSharesValue% of portfolioChange in sharesAction
FMR LLC1,077,538$17.7M0.00%+909,402+540.9%AddedConverted for a 1-for-12 split
EcoR1 Capital, LLC849,143$14.0M0.43%+849,143New
5AM Venture Management, LLC646,524$10.6M2.38%+646,524New
BML Capital Management, LLC466,047$7.68M5.62%+132,578+39.8%AddedConverted for a 1-for-12 split
Farallon Capital Management, L.L.C.431,010$7.10M0.04%+431,010New
Atlas Venture Life Science Advisors, LLC378,447$6.23M0.66%00.0%UnchangedConverted for a 1-for-12 split
ADAR1 Capital Management, LLC356,878$5.88M1.18%+27,307+8.3%AddedConverted for a 1-for-12 split
Vanguard Group Inc156,768$2.58M0.00%00.0%UnchangedConverted for a 1-for-12 split
Verition Fund Management LLC140,680$2.32M0.02%−19,975−12.4%ReducedConverted for a 1-for-12 split
Acadian Asset Management LLC109,629$1.80M0.01%+6,568+6.4%AddedConverted for a 1-for-12 split
Renaissance Technologies LLC89,029$1.47M0.00%+15,015+20.3%AddedConverted for a 1-for-12 split
Aisling Capital Management LP84,148$1.39M0.60%00.0%UnchangedConverted for a 1-for-12 split
Tang Capital Management LLC79,166$1.30M0.13%+8,099+11.4%AddedConverted for a 1-for-12 split
Prosight Management, LP67,461$1.11M0.33%+20,251+42.9%AddedConverted for a 1-for-12 split
Ikarian Capital, LLC62,836$1.03M0.32%00.0%UnchangedConverted for a 1-for-12 split
Affinity Asset Advisors, LLC58,331$960.7K0.15%00.0%UnchangedConverted for a 1-for-12 split
BlackRock Inc.51,113$841.8K0.00%00.0%UnchangedConverted for a 1-for-12 split
Aldebaran Capital, LLC41,991$691.6K0.64%−1,128−2.6%ReducedConverted for a 1-for-12 split
Exome Asset Management LLC32,389$533.4K0.47%+27,294+535.8%AddedConverted for a 1-for-12 split
Geode Capital Management, LLC31,033$511.3K0.00%00.0%UnchangedConverted for a 1-for-12 split
Walleye Capital LLC23,984$395.0K0.00%+12,680+112.2%AddedConverted for a 1-for-12 split
Bridgeway Capital Management, LLC19,781$325.8K0.01%−2,501−11.2%ReducedConverted for a 1-for-12 split
Boothbay Fund Management, LLC15,885$261.6K0.01%00.0%UnchangedConverted for a 1-for-12 split
Two Sigma Investments, LP14,545$239.6K0.00%−7,993−35.5%ReducedConverted for a 1-for-12 split
Morgan Stanley13,189$217.2K0.00%−120−0.9%ReducedConverted for a 1-for-12 split
Two Sigma Advisers, LP13,071$215.3K0.00%−11,621−47.1%ReducedConverted for a 1-for-12 split
State Street Corp11,677$192.3K0.00%−61−0.5%ReducedConverted for a 1-for-12 split
Wells Fargo & Company9,725$160.2K0.00%−754−7.2%ReducedConverted for a 1-for-12 split
Clearstead Advisors, LLC8,140$134.1K0.00%+8,140New
FNY Investment Advisers, LLC3,376$55.0K0.04%−2,874−46.0%ReducedConverted for a 1-for-12 split
Barclays PLC1,441$23.7K0.00%00.0%UnchangedConverted for a 1-for-12 split
CWM, LLC531$9.00K0.00%00.0%UnchangedConverted for a 1-for-12 split
BNP Paribas Arbitrage, SA249$4.10K0.00%00.0%UnchangedConverted for a 1-for-12 split
Bank of America Corp236$3.89K0.00%+236+141,500.0%AddedConverted for a 1-for-12 split
Royal Bank of Canada157$3.00K0.00%00.0%UnchangedConverted for a 1-for-12 split
Tower Research Capital LLC (TRC)112$1.84K0.00%−148−56.9%ReducedConverted for a 1-for-12 split
Rhumbline Advisers100$1.65K0.00%−1−0.7%ReducedConverted for a 1-for-12 split
National Bank of Canada31$4910.00%−1−2.1%ReducedConverted for a 1-for-12 split
JPMorgan Chase & Co22$3620.00%−1−6.4%ReducedConverted for a 1-for-12 split
Group One Trading, L.P.1$160.00%−0−7.7%ReducedConverted for a 1-for-12 split
Newtyn Management, LLC0$00.00%−93,241−100.0%Sold outConverted for a 1-for-12 split
Citadel Advisors LLC0$00.00%−36,420−100.0%Sold outConverted for a 1-for-12 split
Vazirani Asset Management LLC0$00.00%−12,500−100.0%Sold outConverted for a 1-for-12 split
Northern Trust Corp0$00.00%−5,620−100.0%Sold outConverted for a 1-for-12 split
BBR Partners, LLC0$00.00%−5,000−100.0%Sold outConverted for a 1-for-12 split
Squarepoint Ops LLC0$00.00%−3,224−100.0%Sold outConverted for a 1-for-12 split
Susquehanna International Group, LLP0$00.00%−2,877−100.0%Sold outConverted for a 1-for-12 split
XTX Topco Ltd0$00.00%−2,030−100.0%Sold outConverted for a 1-for-12 split
Colonial River Wealth Management, LLC0$00.00%−1,348−100.0%Sold outConverted for a 1-for-12 split
Two Sigma Securities, LLC0$00.00%−873−100.0%Sold outConverted for a 1-for-12 split
Advisor Group Holdings, Inc.0$00.00%−333−100.0%Sold outConverted for a 1-for-12 split