Tectonic Therapeutic, Inc. (TECX) — Institutional Holders, Q2 2026
123 institutional investment managers reported a TECX position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $479.9M. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
TECX in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- First Light Asset ManagementAdded · +152,983 sh+$5.3M
- MILLENNIUM MANAGEMENTAdded · +107,177 sh+$3.7M
- Vestal Point CapitalAdded · +97,000 sh+$3.3M
- CITADEL ADVISORSNew · +90,393 sh+$3.1M
- D. E. ShawAdded · +70,430 sh+$2.4M
Biggest sellers
- BRAIDWELLTrimmed · -250,251 sh-$8.6M
- Opaleye ManagementSold out · -123,000 sh-$4.2M
- PRICE T ROWE ASSOCIATESTrimmed · -116,054 sh-$4.0M
- Point72 Asset Management, L.P.Sold out · -68,598 sh-$2.4M
- MARSHALL WACE, LLPTrimmed · -57,494 sh-$2.0M
TECX 13F holders ranked 1–100 of 123
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | FMR#1 · 2,830,378 sh | 2,830,378 | $97.3M | <0.01% | +0.5% |
| 2 | TCG Crossover Management#2 · 1,204,891 sh | 1,204,891 | $41.4M | 1.00% | 0.0% |
| 3 | abrdn plc#3 · 1,141,824 sh | 1,141,824 | $39.3M | 0.06% | 0.0% |
| 4 | BlackRock#4 · 862,592 sh | 862,592 | $29.7M | <0.01% | +0.3% |
| 5 | First Light Asset Management#5 · 800,726 sh | 800,726 | $27.5M | 1.67% | +23.6% |
| 6 | BAKER BROS. ADVISORS#6 · 607,788 sh | 607,788 | $20.9M | 0.10% | 0.0% |
| 7 | 5AM Venture Management#7 · 606,660 sh | 606,660 | $20.9M | 7.24% | 0.0% |
| 8 | BRAIDWELL#8 · 596,900 sh | 596,900 | $20.5M | 0.76% | -29.5% |
| 9 | VANGUARD CAPITAL MANAGEMENT#9 · 488,805 sh | 488,805 | $16.8M | <0.01% | +3.2% |
| 10 | Vestal Point Capital#10 · 425,000 sh | 425,000 | $14.6M | 0.34% | +29.6% |
| 11 | Bollard Group#11 · 302,953 sh | 302,953 | $10.4M | 0.32% | 0.0% |
| 12 | KENNEDY CAPITAL MANAGEMENT#12 · 282,202 sh | 282,202 | $9.7M | 0.17% | -1.6% |
| 13 | GEODE CAPITAL MANAGEMENT#13 · 270,461 sh | 270,461 | $9.3M | <0.01% | +0.8% |
| 14 | ORBIMED ADVISORS#14 · 226,600 sh | 226,600 | $7.8M | 0.14% | 0.0% |
| 15 | STATE STREET#15 · 219,908 sh | 219,908 | $7.6M | <0.01% | +3.0% |
| 16 | Ikarian Capital#16 · 205,837 sh | 205,837 | $7.1M | 0.76% | +30.7% |
| 17 | D. E. Shaw#17 · 186,550 sh | 186,550 | $6.4M | <0.01% | +60.7% |
| 18 | MARSHALL WACE, LLP#18 · 172,101 sh | 172,101 | $5.9M | <0.01% | -25.0% |
| 19 | MILLENNIUM MANAGEMENT#19 · 165,525 sh | 165,525 | $5.7M | <0.01% | +183.7% |
| 20 | Squarepoint Ops#20 · 145,028 sh | 145,028 | $5.0M | <0.01% | -11.8% |
| 21 | AMERIPRISE FINANCIAL#21 · 142,448 sh | 142,448 | $4.9M | <0.01% | -0.7% |
| 22 | WELLS FARGO & COMPANY#22 · 117,428 sh | 117,428 | $4.0M | <0.01% | +4.2% |
| 23 | NORTHERN#23 · 113,904 sh | 113,904 | $3.9M | <0.01% | +45.4% |
| 24 | Soleus Capital Management, L.P.#24 · 101,684 sh | 101,684 | $3.5M | 0.12% | -16.4% |
| 25 | Woodline Partners#25 · 100,000 sh | 100,000 | $3.4M | 0.01% | 0.0% |
| 26 | VANGUARD PORTFOLIO MANAGEMENT#26 · 94,414 sh | 94,414 | $3.2M | <0.01% | +48.4% |
| 27 | CITADEL ADVISORS#27 · 90,393 sh | 90,393 | $3.1M | <0.01% | New |
| 28 | GOLDMAN SACHS GROUP#28 · 73,924 sh | 73,924 | $2.5M | <0.01% | +18.4% |
| 29 | RAYMOND JAMES FINANCIAL#29 · 72,674 sh | 72,674 | $2.5M | <0.01% | +13.2% |
| 30 | SECTORAL ASSET MANAGEMENT#30 · 71,009 sh | 71,009 | $2.4M | 1.70% | +272.6% |
| 31 | VANGUARD FIDUCIARY#31 · 68,394 sh | 68,394 | $2.4M | <0.01% | +0.7% |
| 32 | JANE STREET GROUP#32 · 65,821 sh | 65,821 | $2.3M | <0.01% | New |
| 33 | MORGAN STANLEY#33 · 65,373 sh | 65,373 | $2.2M | <0.01% | +0.8% |
| 34 | Connor, Clark & Lunn Investment Management Ltd.#34 · 64,940 sh | 64,940 | $2.2M | <0.01% | -3.1% |
| 35 | BOOTHBAY FUND MANAGEMENT#35 · 60,771 sh | 60,771 | $2.1M | 0.03% | +31.7% |
| 36 | JPMORGAN CHASE#36 · 55,364 sh | 55,364 | $1.8M | <0.01% | -6.0% |
| 37 | PRICE T ROWE ASSOCIATES#37 · 48,001 sh | 48,001 | $1.7M | <0.01% | -70.7% |
| 38 | TFG Asset Management GP Ltd#38 · 46,516 sh | 46,516 | $1.6M | 0.25% | +23.8% |
| 39 | PFM Health Sciences#39 · 45,631 sh | 45,631 | $1.6M | 0.13% | -1.1% |
| 40 | HRT FINANCIAL#40 · 44,540 sh | 44,540 | $1.5M | <0.01% | New |
| 41 | Jump Financial#41 · 43,400 sh | 43,400 | $1.5M | 0.01% | +0.7% |
| 42 | Prosight Management#42 · 39,731 sh | 39,731 | $1.4M | 0.24% | -50.3% |
| 43 | Trexquant Investment#43 · 36,991 sh | 36,991 | $1.3M | <0.01% | New |
| 44 | Aldebaran Capital#44 · 36,797 sh | 36,797 | $1.3M | 0.95% | -1.0% |
| 45 | ExodusPoint Capital Management#45 · 35,239 sh | 35,239 | $1.2M | <0.01% | -57.9% |
| 46 | WELLINGTON MANAGEMENT GROUP LLP#46 · 31,432 sh | 31,432 | $1.1M | <0.01% | +7.5% |
| 47 | CHARLES SCHWAB INVESTMENT MANAGEMENT#47 · 30,438 sh | 30,438 | $1.0M | <0.01% | +4.6% |
| 48 | MONIMUS CAPITAL MANAGEMENT#48 · 28,143 sh | 28,143 | $967.4K | 0.22% | +5.2% |
| 49 | Bank of New York Mellon#49 · 25,247 sh | 25,247 | $867.9K | <0.01% | +2.0% |
| 50 | ALPS ADVISORS#50 · 19,147 sh | 19,147 | $658.2K | <0.01% | +25.3% |
| 51 | Fisher Asset Management#51 · 19,122 sh | 19,122 | $657.3K | <0.01% | New |
| 52 | AMERICAN CENTURY COMPANIES#52 · 19,001 sh | 19,001 | $653.2K | <0.01% | +51.6% |
| 53 | Quadrature Capital Ltd#53 · 18,067 sh | 18,067 | $621.1K | <0.01% | New |
| 54 | SEI INVESTMENTS#54 · 17,029 sh | 17,029 | $585.4K | <0.01% | -53.8% |
| 55 | Clearstead Advisors#55 · 16,630 sh | 16,630 | $571.7K | <0.01% | -37.9% |
| 56 | UBS Group AG#56 · 15,055 sh | 15,055 | $517.5K | <0.01% | -49.8% |
| 57 | ADAR1 Capital Management#57 · 14,501 sh | 14,501 | $498.5K | 0.02% | +11.5% |
| 58 | RHUMBLINE ADVISERS#58 · 13,773 sh | 13,773 | $473.4K | <0.01% | -1.8% |
| 59 | Nuveen#59 · 13,514 sh | 13,514 | $464.5K | <0.01% | +12.3% |
| 60 | BANK OF AMERICA#60 · 11,043 sh | 11,043 | $379.6K | 0.00% | -3.7% |
| 61 | Virtus Investment Advisers#61 · 10,806 sh | 10,806 | $371.5K | 0.09% | -21.7% |
| 62 | DIMENSIONAL FUND ADVISORS#62 · 10,443 sh | 10,443 | $359.0K | <0.01% | +3.6% |
| 63 | DEUTSCHE BANK AG\#63 · 10,039 sh | 10,039 | $345.1K | <0.01% | +7.4% |
| 64 | Brevan Howard Capital Management#64 · 9,573 sh | 9,573 | $329.1K | <0.01% | New |
| 65 | BARCLAYS PLC#65 · 9,128 sh | 9,128 | $313.8K | <0.01% | +36.1% |
| 66 | Creative Planning#66 · 8,961 sh | 8,961 | $308.0K | <0.01% | -28.0% |
| 67 | FOX RUN MANAGEMENT, L.L.C.#67 · 8,865 sh | 8,865 | $304.7K | 0.05% | New |
| 68 | Vanguard Global Advisers#68 · 8,765 sh | 8,765 | $301.3K | <0.01% | +121.1% |
| 69 | GSA CAPITAL PARTNERS LLP#69 · 8,275 sh | 8,275 | $284.0K | 0.02% | -56.2% |
| 70 | AlphaCentric Advisors#70 · 6,948 sh | 6,948 | $238.8K | 0.20% | +1.4% |
| 71 | MetLife Investment Management#71 · 6,724 sh | 6,724 | $231.1K | <0.01% | 0.0% |
| 72 | ALLIANCEBERNSTEIN L.P.#72 · 7,460 sh | 7,460 | $230.6K | <0.01% | New |
| 73 | AQR CAPITAL MANAGEMENT#73 · 6,617 sh | 6,617 | $227.5K | <0.01% | -60.9% |
| 74 | Invesco Ltd.#74 · 6,388 sh | 6,388 | $219.6K | 0.00% | -16.8% |
| 75 | STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM#75 · 6,060 sh | 6,060 | $208.3K | <0.01% | New |
| 76 | Rangeley Capital#76 · 6,000 sh | 6,000 | $206.3K | 0.19% | New |
| 77 | Velan Capital Investment Management#77 · 6,000 sh | 6,000 | $206.3K | 0.13% | New |
| 78 | MANUFACTURERS LIFE INSURANCE COMPANY, THE#78 · 5,996 sh | 5,996 | $206.1K | <0.01% | -57.0% |
| 79 | Russell Investments Group, Ltd.#79 · 5,567 sh | 5,567 | $191.4K | <0.01% | +554.2% |
| 80 | CITIGROUP#80 · 5,548 sh | 5,548 | $190.7K | <0.01% | +383.7% |
| 81 | China Universal Asset Management , Ltd.#81 · 5,503 sh | 5,503 | $189.2K | 0.01% | -13.1% |
| 82 | NISA INVESTMENT ADVISORS#82 · 5,400 sh | 5,400 | $185.6K | — | +8.0% |
| 83 | BNP PARIBAS FINANCIAL MARKETS#83 · 5,146 sh | 5,146 | $176.9K | <0.01% | +82.7% |
| 84 | MIRAE ASSET GLOBAL ETFS Ltd.#84 · 4,694 sh | 4,694 | $161.4K | <0.01% | -10.0% |
| 85 | NEW YORK STATE COMMON RETIREMENT FUND#85 · 4,600 sh | 4,600 | $158.1K | <0.01% | 0.0% |
| 86 | Police & Firemen's Retirement System of New Jersey#86 · 2,638 sh | 2,638 | $90.7K | <0.01% | 0.0% |
| 87 | Quantbot Technologies#87 · 1,819 sh | 1,819 | $62.5K | <0.01% | New |
| 88 | Ameritas Investment Partners#88 · 1,122 sh | 1,122 | $38.6K | <0.01% | 0.0% |
| 89 | US BANCORP \DE\#89 · 1,080 sh | 1,080 | $37.1K | 0.00% | -4.9% |
| 90 | Legal & General Group Plc#90 · 1,000 sh | 1,000 | $34.4K | 0.00% | 0.0% |
| 91 | Mirae Asset Global Investments , Ltd.#91 · 844 sh | 844 | $29.0K | 0.00% | -13.8% |
| 92 | Chung Wu Investment Group#92 · 800 sh | 800 | $27.5K | 0.02% | New |
| 93 | SRS Capital Advisors#93 · 725 sh | 725 | $24.9K | <0.01% | New |
| 94 | Tower Research Capital (TRC)#94 · 661 sh | 661 | $22.7K | <0.01% | -27.7% |
| 95 | State of Wyoming#95 · 601 sh | 601 | $20.7K | <0.01% | New |
| 96 | HighMark Wealth Management#96 · 587 sh | 587 | $20.2K | <0.01% | 0.0% |
| 97 | SIMPLEX TRADING#97 · 439 sh | 439 | $15.1K | 0.00% | -67.5% |
| 98 | GF FUND MANAGEMENT LTD.#98 · 400 sh | 400 | $13.8K | — | -3.6% |
| 99 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#99 · 382 sh | 382 | $13.1K | 0.00% | 0.0% |
| 100 | Rockefeller Capital Management L.P.#100 · 370 sh | 370 | $12.7K | 0.00% | 0.0% |
Funds that sold out of TECX in Q2 2026 (11)
Held TECX at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| Opaleye Management123,000 sh | 123,000 | $3.8M |
| Point72 Asset Management, L.P.68,598 sh | 68,598 | $2.1M |
| TD ASSET MANAGEMENT20,400 sh | 20,400 | $630.6K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP16,175 sh | 16,175 | $500.0K |
| XTX Topco Ltd11,621 sh | 11,621 | $359.2K |
| Caption Management1,449 sh | 1,449 | $44.8K |
| Global Wealth Strategies & Associates18 sh | 18 | $556.00 |
| Fortitude Family Office15 sh | 15 | $464.00 |
| MAI Capital Management7 sh | 7 | $217.00 |
| True Wealth Design7 sh | 7 | $217.00 |
| Root Financial Partners5 sh | 5 | $155.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.