TECX
Tectonic Therapeutic, Inc. · Healthcare · Biotechnology
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 57 | +6 | 7.73M | $265.79M | +9 | −3 |
| Q1 2026 | 53 | +3 | 7.56M | $233.65M | +10 | −7 |
| Q4 2025 | 50 | 0 | 8.28M | $172.63M | +1 | −1 |
| Q3 2025 | 14 | -1 | 5.97M | $93.62M | n/a | −1 |
| Q2 2025 | 12 | -1 | 5.17M | $102.64M | n/a | −1 |
| Q1 2025 | 10 | +6 | 971.81K | $17.19M | +6 | n/a |
| Q4 2024 | 4 | 0 | 181.96K | $8.40M | +1 | −1 |
| Q3 2024 | 3 | 0 | 144.81K | $4.39M | n/a | n/a |
| Q2 2024 | 3 | n/a | 134.61K | $2.22M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Geode Capital Management ✦ (passive) | 77.58K | +0.9% | $3.58M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 2 | Renaissance Technologies ✦ | 48.17K | -15.3% | $2.22M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 3 | Millennium Management ✦ | 28.79K | New | $1.33M | 0.0% | New | 1 | SEC ↗ |
| 4 | State Street Global Advisors ✦ (passive) | 27.41K | n/a | $1.27M | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Millennium Management | $1.33M | 0.0% |
Exited
| Two Sigma Investments | $334,239 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 110 holders, 13.75M shares, $410.16M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 43 sh · $1,570
Officer · 43 sh · $1,505
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology