Who owns Tectonic Therapeutic, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of TECX from SEC Form 13F filings across 122 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 122 institutions disclosed 14.0M shares of Tectonic Therapeutic, Inc. worth $479.9M — about 73.6% of shares outstanding; the largest disclosed holder is FMR LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
122
13F holders
$479.9M
value, 2026 filers
73.6%
of shares outstanding (14.0M sh)
24
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of TECX's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | FMR LLC | 2.8M | $97.3M | 0.0% | 14.9% | +0.5% |
| 2 | TCG Crossover Management, LLC | 1.2M | $41.4M | 1.0% | 6.4% | 0.0% |
| 3 | Aberdeen Group plc | 1.1M | $39.3M | 0.1% | 6% | 0.0% |
| 4 | BlackRock, Inc. | 862,592 | $29.7M | 0.0% | 4.5% | +0.3% |
| 5 | First Light Asset Management, LLC | 800,726 | $27.5M | 1.7% | 4.2% | +23.6% |
| 6 | BAKER BROS. ADVISORS LP | 607,788 | $20.9M | 0.1% | 3.2% | 0.0% |
| 7 | 5AM Venture Management, LLC | 606,660 | $20.9M | 7.2% | 3.2% | 0.0% |
| 8 | BRAIDWELL LP | 596,900 | $20.5M | 0.8% | 3.1% | -29.5% |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 488,805 | $16.8M | 0.0% | 2.6% | +3.2% |
| 10 | Vestal Point Capital, LP | 425,000 | $14.6M | 0.3% | 2.2% | +29.6% |
| 11 | Bollard Group LLC | 302,953 | $10.4M | 0.3% | 1.6% | 0.0% |
| 12 | KENNEDY CAPITAL MANAGEMENT LLC | 282,202 | $9.7M | 0.2% | 1.5% | -1.6% |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 270,461 | $9.3M | 0.0% | 1.4% | +0.8% |
| 14 | ORBIMED ADVISORS LLC | 226,600 | $7.8M | 0.1% | 1.2% | 0.0% |
| 15 | STATE STREET CORP | 219,908 | $7.6M | 0.0% | 1.2% | +3.0% |
| 16 | Ikarian Capital, LLC | 205,837 | $7.1M | 0.8% | 1.1% | +30.7% |
| 17 | D. E. Shaw & Co., Inc. | 186,550 | $6.4M | 0.0% | 1% | +60.7% |
| 18 | MARSHALL WACE, LLP | 172,101 | $5.9M | 0.0% | 0.9% | -25.0% |
| 19 | MILLENNIUM MANAGEMENT LLC | 165,525 | $5.7M | 0.0% | 0.9% | +183.7% |
| 20 | Squarepoint Ops LLC | 145,028 | $5.0M | 0.0% | 0.8% | -11.8% |
| 21 | AMERIPRISE FINANCIAL INC | 142,448 | $4.9M | 0.0% | 0.8% | -0.7% |
| 22 | WELLS FARGO & COMPANY/MN | 117,428 | $4.0M | 0.0% | 0.6% | +4.2% |
| 23 | NORTHERN TRUST CORP | 113,904 | $3.9M | 0.0% | 0.6% | +45.4% |
| 24 | Soleus Capital Management, L.P. | 101,684 | $3.5M | 0.1% | 0.5% | -16.4% |
| 25 | Woodline Partners LP | 100,000 | $3.4M | 0.0% | 0.5% | 0.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.