TECX
Tectonic Therapeutic, Inc. · Healthcare · Biotechnology
Momentum inputs (comparable managers):
holder breadth +30.0% ·
share flow +30.0% ·
net new positions +20.0%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| 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 | — | −1 |
| Q2 2025 | 12 | -1 | 5.17M | $102.64M | — | −1 |
| Q1 2025 | 10 | +6 | 971.81K | $17.19M | +6 | — |
| Q4 2024 | 4 | 0 | 181.96K | $8.40M | +1 | −1 |
| Q3 2024 | 3 | 0 | 144.81K | $4.39M | — | — |
| Q2 2024 | 3 | — | 134.61K | $2.22M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Millennium Management ✦ | 237.94K | +726.4% | $4.21M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 2 | Point72 Asset Management ✦ | 200.00K | New | $3.54M | 0.0% | New | 1 | SEC ↗ |
| 3 | Renaissance Technologies ✦ | 144.30K | +199.6% | $2.56M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 4 | Adage Capital Partners ✦ | 100.00K | New | $1.77M | 0.0% | New | 1 | SEC ↗ |
| 5 | Citadel Advisors ✦ | 93.47K | New | $1.63M | 0.0% | New | 1 | SEC ↗ |
| 6 | Geode Capital Management ✦ (passive) | 79.49K | +2.5% | $1.41M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 7 | Geode Capital Management ✦ (passive) | 79.49K | +2.5% | $1.41M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 8 | Marshall Wace ✦ | 53.34K | New | $944,654 | 0.0% | New | 1 | SEC ↗ |
| 9 | Marshall Wace ✦ | 53.34K | New | $944,654 | 0.0% | New | 1 | SEC ↗ |
| 10 | State Street Global Advisors ✦ (passive) | 30.80K | +12.4% | $545,557 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 11 | Wellington Management ✦ | 19.66K | New | $348,179 | 0.0% | New | 1 | SEC ↗ |
| 12 | Wellington Management ✦ | 19.66K | New | $348,179 | 0.0% | New | 1 | SEC ↗ |
| 13 | T. Rowe Price ✦ | 12.81K | New | $227,000 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Point72 Asset Management | $3.54M | 0.0% |
| Adage Capital Partners | $1.77M | 0.0% |
| Citadel Advisors | $1.63M | 0.0% |
| Marshall Wace | $944,654 | 0.0% |
| Marshall Wace | $944,654 | 0.0% |
| Wellington Management | $348,179 | 0.0% |
| Wellington Management | $348,179 | 0.0% |
| T. Rowe Price | $227,000 | 0.0% |
Exited
| No tracked exits this quarter. |
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 · $1,505
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology