TECX Institutional Ownership
Who owns Tectonic Therapeutic, Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 123 funds reported holding TECX at Jun 30, 2026, together owning 71.4% of the company.
- ▲64 buying vs 51 selling
- ▲Held by funds +0.8 pts
- ▲Funds holding +12
- ▲Superinvestors: 2 added, 1 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 123 | 111 | +10.8% |
| In funds' top 10 | 1 | 1 | 0.0% |
| 13F shares | 14M | 13.8M | +1.1% |
| Held by funds | 71.4% | 70.7% | +0.8 pts |
| New positions | 25 | 25 | 0.0% |
| Increased | 39 | 32 | +21.9% |
| Reduced | 40 | 37 | +8.1% |
| Sold out | 11 | 20 | −45.0% |
| Calls (shares) | 0 | 25K | −100.0% |
| Puts (shares) | 0 | 0 | – |
| Put/call ratio | – | 0.00 | – |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in TECX
All superinvestors →
Who owns TECX
share of fund held shares- Index and passive funds15.6%
- Active managers and hedge funds79.4%
- Banks and brokers4.9%
- Pensions, insurers and other0.1%
The top 10 holders own 68.5% of all TECX shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
14 funds changed their position- Y-Intercept (Hong Kong) LtdNew+41K sh
- Creative PlanningSold out−8,961 sh
- Strs OhioNew+12K sh
- Alps Advisors IncAdded+6,739 sh
- China Universal Asset Management Co., Ltd.Added+5,264 sh
🔒 Free account: see all 14.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | Fmr LLC | 14.48% | 2.8M | $97.3M | +14K |
| 2 | TCG Crossover Management, LLC | 6.16% | 1.2M | $41.4M | 0 |
| 3 | Aberdeen Group plc | 5.84% | 1.1M | $39.3M | 0 |
| 4 | BlackRock, Inc. | 4.41% | 863K | $29.7M | +2,240 |
| 5 | First Light Asset Management, LLC | 4.10% | 801K | $27.5M | +153K |
| 6 | Baker Bros. Advisors LP | 3.11% | 608K | $20.9M | 0 |
| 7 | 5AM Venture Management, LLC | 3.10% | 607K | $20.9M | 0 |
| 8 | Braidwell LP | 3.05% | 597K | $20.5M | −250K |
| 9 | Vanguard Capital Management LLC | 2.50% | 489K | $16.8M | +15K |
| 10 | Vestal Point Capital, LP | 2.17% | 425K | $14.6M | +97K |
- First Light Asset Management, LLC+153K sh+$5.3M
- Millennium Management LLC+107K sh+$3.7M
- Vestal Point Capital, LP+97K sh+$3.3M
- Citadel Advisors LLC+90K sh+$3.1M
- D. E. Shaw & Co., Inc.+70K sh+$2.4M
- Jane Street Group, LLC+66K sh+$2.3M
- Sectoral Asset Management Inc+52K sh+$1.8M
- Ikarian Capital, LLC+48K sh+$1.7M
- Braidwell LP−250K sh−$8.6M
- Price T Rowe Associates Inc /md/−116K sh−$4M
- Opaleye Management Inc.−123K sh−$3.8M
- Point72 Asset Management, L.P.−69K sh−$2.1M
- Marshall Wace, LLP−57K sh−$2M
- ExodusPoint Capital Management, LP−48K sh−$1.7M
- Prosight Management, LP−40K sh−$1.4M
- Soleus Capital Management, L.P.−20K sh−$688K
TECX institutional ownership FAQ
Who owns the most TECX stock?
In Q2 2026 13F filings the largest holder of TECX was Fmr LLC, followed by TCG Crossover Management, LLC and Aberdeen Group plc. Index fund managers are usually the biggest holders of large companies.
What percentage of TECX is owned by institutions?
Funds that file 13F reports held 71.4% of TECX's shares at Jun 30, 2026, compared with 70.7% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying TECX?
In Q2 2026, 64 funds bought TECX (25 of them new positions) and 51 sold (11 sold out completely). Among well known investors, 2 added and 1 cut. Our fund sentiment for TECX is strongly bullish.
What is TECX's institutional put/call ratio?
Too few option positions were reported for a meaningful ratio.
How current is this TECX ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.