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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, Q3 2021

Institutional positions in Tectonic Therapeutic, Inc. as of Sep 30, 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
101
+5 vs. Q2 2021
Shares held
29.8M
−2.54M (−7.9%) vs. Q2 2021
Total value
$166.5M
−$121.2M (−42.1%) vs. Q2 2021
New holders
21
34 more added
Sold out
16
27 more reduced

1 institution that held it in Q2 2021 haven't filed for Q3 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 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 holdersQ3 2021: 101 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 heldQ3 2021: $166.5M
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, Q3 2021

Shares, value and share of portfolio for each institution holding Tectonic Therapeutic, Inc.; share changes are against Q2 2021.

Institutions holding TECX in Q3 2021
InstitutionSharesValue% of portfolioChange in sharesAction
JPMorgan Chase & Co4,609,602$25.7M0.00%−278,714−5.7%Reduced
Emerald Advisers, LLC0$00.00%−689,002−100.0%Sold out
Emerald Mutual Fund Advisers Trust0$00.00%−325,891−100.0%Sold out
Burrage Capital Management LLC0$00.00%−244,920−100.0%Sold out
Victory Capital Management Inc0$00.00%−109,460−100.0%Sold out
Rafferty Asset Management, LLC0$00.00%−108,943−100.0%Sold out
Allianz Asset Management GmbH0$00.00%−39,849−100.0%Sold out
Penn Mutual Asset Management, LLC0$00.00%−26,114−100.0%Sold out
Susquehanna Fundamental Investments, LLC0$00.00%−24,334−100.0%Sold out
Janus Henderson Group PLC0$00.00%−22,030−100.0%Sold out
Strategic Wealth Advisors Group, LLC0$00.00%−19,100−100.0%Sold out
Virtu Financial LLC0$00.00%−19,061−100.0%Sold out
Nisa Investment Advisors, LLC0$00.00%−5,500−100.0%Sold out
US Bancorp0$00.00%−188−100.0%Sold out
Enterprise Financial Services Corp0$00.00%−96−100.0%Sold out
Lindbrook Capital, LLC0$00.00%−96−100.0%Sold out
Steward Partners Investment Advisory, LLC0$00.00%−50−100.0%Sold out
CWM, LLC––––Not filed