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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, Q1 2023

Institutional positions in Tectonic Therapeutic, Inc. as of Mar 31, 2023. 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
48
+3 vs. Q4 2022
Shares held
22.8M
+2.07M (+9.9%) vs. Q4 2022
Total value
$22.8M
+$8.03M (+54.2%) vs. Q4 2022
New holders
11
12 more added
Sold out
8
12 more reduced

Compare with Q4 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 holdersQ1 2023: 48 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 heldQ1 2023: $22.8M
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, Q1 2023

Shares, value and share of portfolio for each institution holding Tectonic Therapeutic, Inc.; share changes are against Q4 2022.

Institutions holding TECX in Q1 2023
InstitutionSharesValue% of portfolioChange in sharesAction
Atlas Venture Life Science Advisors, LLC4,541,381$4.54M0.61%+20,518+0.5%Added
GMT Capital Corp4,357,859$4.36M0.17%+1,048,000+31.7%Added
Farallon Capital Management, L.L.C.3,116,000$3.12M0.02%+2,376,000+321.1%Added
Acadian Asset Management LLC1,770,147$1.77M0.01%+300,255+20.4%Added
BlackRock Inc.1,393,369$1.39M0.00%−126,971−8.4%Reduced
Vanguard Group Inc1,181,134$1.18M0.00%+22,877+2.0%Added
Aisling Capital Management LP1,009,779$1.01M0.49%00.0%Unchanged
Point72 Asset Management, L.P.650,000$650.0K0.00%+650,000New
MPM Oncology Impact Management LP647,918$647.9K0.17%00.0%Unchanged
Renaissance Technologies LLC573,367$573.0K0.00%−288,900−33.5%Reduced
Citadel Advisors LLC506,354$506.4K0.00%−76,615−13.1%Reduced
Two Sigma Investments, LP332,998$333.0K0.00%+15,147+4.8%Added
Two Sigma Advisers, LP332,100$332.1K0.00%−9,700−2.8%Reduced
Geode Capital Management, LLC330,512$330.5K0.00%−55,403−14.4%Reduced
New Leaf Venture Partners, L.L.C.315,550$315.6K0.26%00.0%Unchanged
Boston Private Wealth LLC284,365$284.4K0.00%00.0%Unchanged
JPMorgan Chase & Co207,979$208.0K0.00%+184,381+781.3%Added
Morgan Stanley202,845$202.8K0.00%−340,582−62.7%Reduced
Millennium Management LLC175,539$176.0K0.00%−513,146−74.5%Reduced
State Street Corp140,852$140.9K0.00%00.0%Unchanged
Wells Fargo & Company137,064$137.1K0.00%+47,602+53.2%Added
Bridgeway Capital Management, LLC106,000$106.0K0.00%−50,000−32.1%Reduced
Privium Fund Management (UK) Ltd87,770$85.1K0.07%−175,534−66.7%Reduced
Northern Trust Corp75,465$75.5K0.00%+1,527+2.1%Added
Bailard, Inc.45,492$45.5K0.00%+19,700+76.4%Added
Virtu Financial LLC40,319$40.0K0.00%+40,319New
Tang Capital Management LLC37,613$37.6K0.01%+37,613New
Deutsche Bank AG35,000$35.0K0.00%00.0%Unchanged
Needham Investment Management LLC30,000$30.0K0.01%+5,487+22.4%Added
FNY Investment Advisers, LLC26,250$26.0K0.03%+26,250New
Susquehanna International Group, LLP24,409$24.4K0.00%+24,409New
Barclays PLC21,935$21.9K0.00%00.0%Unchanged
Citigroup Inc19,607$19.6K0.00%+19,607New
Colonial River Wealth Management, LLC16,940$16.9K0.01%00.0%Unchanged
Bank of New York Mellon Corp16,788$16.8K0.00%00.0%Unchanged
HSBC Holdings PLC16,556$15.8K0.00%00.0%Unchanged
Shay Capital LLC10,000$10.0K0.00%+10,000New
C2C Wealth Management, LLC10,000$9.00K0.00%+10,000New
Tower Research Capital LLC (TRC)6,355$6.00K0.00%−8,783−58.0%Reduced
BNP Paribas Arbitrage, SA3,086$3.09K0.00%−1,500−32.7%Reduced
Royal Bank of Canada1,865$2.00K0.00%00.0%Unchanged
CWM, LLC2,000$2.00K0.00%00.0%Unchanged
Federated Hermes, Inc.1,515$1.51K0.00%−5,666−78.9%Reduced
Bank of America Corp831$8310.00%+730+722.8%Added
National Bank of Canada380$3730.00%+380New
UBS Group AG65$650.00%00.0%Unchanged
Cubist Systematic Strategies, LLC48$480.00%+48New
Simplex Trading, LLC725$00.00%+725New
Natixis0$00.00%−880,000−100.0%Sold out
LPL Financial LLC0$00.00%−122,578−100.0%Sold out
Ergoteles LLC0$00.00%−46,906−100.0%Sold out
Charles Schwab Investment Management Inc0$00.00%−37,231−100.0%Sold out
Jane Street Group, LLC0$00.00%−29,040−100.0%Sold out
Two Sigma Securities, LLC0$00.00%−14,163−100.0%Sold out
Goldman Sachs Group Inc0$00.00%−10,082−100.0%Sold out
Group One Trading, L.P.0$00.00%−3,007−100.0%Sold out