DaveManuel.com · Institutional Ownership · Who Owns It
TECTONIC THERAPEUTIC INC (TECX)
Institutional ownership reported to the SEC as of Q2 2026, across 10 quarters.
124
Reporting holders
$487.4M
Reported value
71.4%
Of shares outstanding
1.4%
Calls
0.1%
Puts
+10
Holder change
Institutions report 13,964,835 shares against 19,549,366 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| FMR LLC | $97.3M | 2,830,378 | 0.00% | 9q | HELD |
| TCG Crossover Management, LLC | $41.4M | 1,204,891 | 1.00% | 2q | HELD |
| Aberdeen Group plc | $39.3M | 1,141,824 | 0.06% | 4q | HELD |
| BlackRock, Inc. | $29.7M | 862,592 | 0.00% | 8q | HELD |
| First Light Asset Management, LLC | $27.5M | 800,726 | 1.67% | 2q | +23.6%+$5.3M |
| BAKER BROS. ADVISORS LP | $20.9M | 607,788 | 0.10% | 6q | HELD |
| 5AM Venture Management, LLC | $20.9M | 606,660 | 7.24% | 9q | HELD |
| BRAIDWELL LP | $20.5M | 596,900 | 0.76% | 4q | -29.5%-$8.6M |
| VANGUARD CAPITAL MANAGEMENT LLC | $16.8M | 488,805 | 0.00% | 2q | +3.2%+$525.0K |
| Vestal Point Capital, LP | $14.6M | 425,000 | 0.34% | 3q | +29.6%+$3.3M |
| Bollard Group LLC | $10.4M | 302,953 | 0.32% | 6q | HELD |
| KENNEDY CAPITAL MANAGEMENT LLC | $9.7M | 282,202 | 0.17% | 4q | -1.6%-$154.0K |
| GEODE CAPITAL MANAGEMENT, LLC | $9.3M | 270,461 | 0.00% | 9q | +0.8%+$75.2K |
| ORBIMED ADVISORS LLC | $7.8M | 226,600 | 0.14% | 3q | HELD |
| STATE STREET CORP | $7.6M | 219,908 | 0.00% | 9q | +3.0%+$220.1K |
| Ikarian Capital, LLC | $7.1M | 205,837 | 0.76% | 2q | +30.7%+$1.7M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $6.5M CALL+PUT | options only | 0.00% | 8q | OPTIONS |
| D. E. Shaw & Co., Inc. | $6.4M | 186,550 | 0.00% | 3q | +60.7%+$2.4M |
| MARSHALL WACE, LLP | $5.9M | 172,101 | 0.00% | 6q | -25.0%-$2.0M |
| MILLENNIUM MANAGEMENT LLC | $5.7M | 165,525 | 0.00% | 7q | +183.7%+$3.7M |
| Squarepoint Ops LLC | $5.0M | 145,028 | 0.01% | 6q | -11.8%-$666.6K |
| AMERIPRISE FINANCIAL INC | $4.9M | 142,448 | 0.00% | 2q | -0.7%-$33.8K |
| WELLS FARGO & COMPANY/MN | $4.0M | 117,428 | 0.00% | 9q | +4.2%+$163.8K |
| NORTHERN TRUST CORP | $3.9M | 113,904 | 0.00% | 8q | +45.4%+$1.2M |
| CITADEL ADVISORS LLC | $3.7M incl. $584.4K options CALL | 90,393 | 0.00% | 6q | HELD |
| Soleus Capital Management, L.P. | $3.5M | 101,684 | 0.12% | 2q | -16.4%-$687.5K |
| Woodline Partners LP | $3.4M | 100,000 | 0.01% | 8q | HELD |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $3.2M | 94,414 | 0.00% | 2q | +48.4%+$1.1M |
| GOLDMAN SACHS GROUP INC | $2.5M | 73,924 | 0.00% | 4q | +18.4%+$395.2K |
| RAYMOND JAMES FINANCIAL INC | $2.5M | 72,674 | 0.00% | 7q | +13.2%+$291.4K |
| SECTORAL ASSET MANAGEMENT INC | $2.4M | 71,009 | 1.70% | 5q | +272.6%+$1.8M |
| VANGUARD FIDUCIARY TRUST CO | $2.4M | 68,394 | 0.00% | 2q | +0.7%+$17.2K |
| JANE STREET GROUP, LLC | $2.3M | 65,821 | 0.00% | 4q | HELD |
| MORGAN STANLEY | $2.2M | 65,373 | 0.00% | 9q | +0.8%+$18.0K |
| Connor, Clark & Lunn Investment Management Ltd. | $2.2M | 64,940 | 0.00% | 8q | -3.1%-$70.6K |
| BOOTHBAY FUND MANAGEMENT, LLC | $2.1M | 60,771 | 0.03% | 2q | +31.7%+$503.0K |
| JPMORGAN CHASE & CO | $1.8M | 55,364 | 0.00% | 9q | -6.0%-$116.0K |
| PRICE T ROWE ASSOCIATES INC /MD/ | $1.7M | 48,001 | 0.00% | 2q | -70.7%-$4.0M |
| Tetragon Partners GP Ltd | $1.6M | 46,516 | 0.25% | 2q | +23.8%+$306.9K |
| PFM Health Sciences, LP | $1.6M | 45,631 | 0.13% | 3q | -1.1%-$17.1K |
| HRT FINANCIAL LP | $1.5M | 44,540 | 0.00% | new | NEW |
| Jump Financial, LLC | $1.5M | 43,400 | 0.01% | 3q | +0.7%+$10.4K |
| Prosight Management, LP | $1.4M | 39,731 | 0.24% | 6q | -50.3%-$1.4M |
| Trexquant Investment LP | $1.3M | 36,991 | 0.01% | new | NEW |
| Aldebaran Capital, LLC | $1.3M | 36,797 | 0.95% | 9q | -1.0%-$13.3K |
| ExodusPoint Capital Management, LP | $1.2M | 35,239 | 0.01% | 4q | -57.9%-$1.7M |
| WELLINGTON MANAGEMENT GROUP LLP | $1.1M | 31,432 | 0.00% | 6q | +7.5%+$75.3K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $1.0M | 30,438 | 0.00% | 5q | +4.6%+$45.6K |
| MONIMUS CAPITAL MANAGEMENT, LP | $967.4K | 28,143 | 0.22% | 6q | +5.2%+$47.8K |
| Bank of New York Mellon Corp | $867.9K | 25,247 | 0.00% | 5q | +2.0%+$16.7K |
| ALPS ADVISORS INC | $658.2K | 19,147 | 0.00% | 3q | +25.3%+$132.7K |
| Fisher Asset Management, LLC | $657.3K | 19,122 | 0.00% | new | NEW |
| AMERICAN CENTURY COMPANIES INC | $653.2K | 19,001 | 0.00% | 2q | +51.6%+$222.3K |
| Quadrature Capital Ltd | $621.1K | 18,067 | 0.01% | new | NEW |
| SEI INVESTMENTS CO | $585.4K | 17,029 | 0.00% | 3q | -53.8%-$682.0K |
| Clearstead Advisors, LLC | $571.7K | 16,630 | 0.01% | 9q | -37.9%-$348.2K |
| UBS Group AG | $517.5K | 15,055 | 0.00% | 8q | -49.8%-$513.3K |
| ADAR1 Capital Management, LLC | $498.5K | 14,501 | 0.02% | 9q | +11.5%+$51.6K |
| RHUMBLINE ADVISERS | $473.4K | 13,773 | 0.00% | 9q | -1.8%-$8.7K |
| Nuveen, LLC | $464.5K | 13,514 | 0.00% | 5q | +12.3%+$50.9K |
| BANK OF AMERICA CORP /DE/ | $379.6K | 11,043 | 0.00% | 9q | -3.7%-$14.5K |
| Virtus Investment Advisers, LLC | $371.5K | 10,806 | 0.09% | 6q | -21.7%-$102.9K |
| DIMENSIONAL FUND ADVISORS LP | $359.0K | 10,443 | 0.00% | 3q | +3.6%+$12.6K |
| DEUTSCHE BANK AG\ | $345.1K | 10,039 | 0.00% | 3q | +7.4%+$23.9K |
| GROUP ONE TRADING LLC | $343.8K CALL | options only | 0.00% | 3q | OPTIONS |
| Brevan Howard Capital Management LP | $329.1K | 9,573 | 0.00% | new | NEW |
| BARCLAYS PLC | $313.8K | 9,128 | 0.00% | 9q | +36.1%+$83.3K |
| Creative Planning | $308.0K | 8,961 | 0.00% | 2q | -28.0%-$119.8K |
| FOX RUN MANAGEMENT, L.L.C. | $304.7K | 8,865 | 0.05% | new | NEW |
| Vanguard Global Advisers, LLC | $301.3K | 8,765 | 0.00% | 2q | +121.1%+$165.0K |
| GSA CAPITAL PARTNERS LLP | $284.0K | 8,275 | 0.02% | 3q | -56.2%-$363.7K |
| AlphaCentric Advisors LLC | $238.8K | 6,948 | 0.20% | 3q | +1.4%+$3.4K |
| MetLife Investment Management, LLC | $231.1K | 6,724 | 0.00% | 5q | HELD |
| ALLIANCEBERNSTEIN L.P. | $230.6K | 7,460 | 0.00% | new | NEW |
| AQR CAPITAL MANAGEMENT LLC | $227.5K | 6,617 | 0.00% | 2q | -60.9%-$354.6K |
| Invesco Ltd. | $219.6K | 6,388 | 0.00% | 2q | -16.8%-$44.2K |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM | $208.3K | 6,060 | 0.00% | new | NEW |
| Rangeley Capital, LLC | $206.2K | 6,000 | 0.19% | new | NEW |
| Velan Capital Investment Management LP | $206.2K | 6,000 | 0.13% | new | NEW |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $206.1K | 5,996 | 0.00% | 2q | -57.0%-$272.7K |
| Russell Investments Group, Ltd. | $191.4K | 5,567 | 0.00% | 4q | +554.2%+$162.1K |
| CITIGROUP INC | $190.7K | 5,548 | 0.00% | 8q | +383.7%+$151.3K |
| China Universal Asset Management Co., Ltd. | $189.2K | 5,503 | 0.01% | 7q | -13.1%-$28.5K |
| NISA INVESTMENT ADVISORS, LLC | $185.6K | 5,400 | 0.00% | 3q | +8.0%+$13.8K |
| BNP PARIBAS FINANCIAL MARKETS | $176.9K | 5,146 | 0.00% | 7q | +82.7%+$80.1K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $161.4K | 4,694 | 0.00% | 5q | -10.0%-$17.9K |
| NEW YORK STATE COMMON RETIREMENT FUND | $158.1K | 4,600 | 0.00% | 5q | HELD |
| Police & Firemen's Retirement System of New Jersey | $90.7K | 2,638 | 0.00% | 5q | HELD |
| Quantbot Technologies LP | $62.5K | 1,819 | 0.00% | new | NEW |
| SIMPLEX TRADING, LLC | $59.8K incl. $44.7K options CALL+PUT | 439 | 0.00% | 5q | -67.5%-$124.2K |
| Ameritas Investment Partners, Inc. | $38.6K | 1,122 | 0.00% | 5q | HELD |
| US BANCORP \DE\ | $37.1K | 1,080 | 0.00% | 8q | -4.9%-$1.9K |
| Legal & General Group Plc | $34.4K | 1,000 | 0.00% | 5q | HELD |
| Mirae Asset Global Investments Co., Ltd. | $29.0K | 844 | 0.00% | 7q | -13.8%-$4.6K |
| Chung Wu Investment Group, LLC | $27.5K | 800 | 0.02% | new | NEW |
| Arax Advisory Partners | $24.9K | 725 | 0.00% | new | NEW |
| Tower Research Capital LLC (TRC) | $22.7K | 661 | 0.00% | 7q | -27.7%-$8.7K |
| State of Wyoming | $20.7K | 601 | 0.00% | new | NEW |
| HighMark Wealth Management LLC | $20.2K | 587 | 0.01% | 3q | HELD |
| GF FUND MANAGEMENT CO. LTD. | $13.8K | 400 | 0.00% | 7q | -3.6% |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-10-29 | 13G/A | Aberdeen Group plcwith 1 co-filers | 2.5% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 15 | $1.4M | 60,116 | 2 | 6 | 2 | 0.0% |
| Q2 2026 | 124 | $487.4M | 13,964,835 | 22 | 37 | 41 | 1.5% |
| Q1 2026 | 114 | $441.3M | 13,811,456 | 26 | 31 | 37 | 3.3% |
| Q4 2025 | 108 | $299.1M | 13,814,358 | 30 | 31 | 24 | 3.7% |
| Q3 2025 | 102 | $194.8M | 12,110,995 | 30 | 27 | 20 | 2.5% |
| Q2 2025 | 83 | $240.7M | 12,113,381 | 20 | 33 | 13 | 0.0% |
| Q1 2025 | 78 | $198.8M | 11,227,627 | 30 | 28 | 12 | 0.0% |
| Q4 2024 | 70 | $354.9M | 7,686,866 | 22 | 21 | 15 | 0.0% |
| Q3 2024 | 53 | $218.5M | 7,212,175 | 17 | 12 | 8 | 0.0% |
| Q2 2024 | 39 | $88.8M | 5,345,903 | 40 | 0 | 0 | 0.9% |