Security record · archived quarter
MTSR
Metsera, Inc. · Healthcare · Biotechnology
8Tracked holders
+8Δ holders
6.51MShares held
$177.18MReported value
+8New positions
−0Exits
Momentum inputs (comparable managers):
holder breadth — ·
share flow — ·
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
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2025 | 13 | +1 | 32.25M | $1.69B | +2 | −1 |
| Q2 2025 | 9 | -2 | 26.20M | $745.32M | — | −2 |
| Q1 2025 | 8 | +8 | 6.51M | $177.18M | +8 | — |
Who holds it · Q1 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Wellington Management ✦ | 2.40M | New | $65.38M | 0.0% | New | 1 | SEC ↗ |
| 2 | Wellington Management ✦ | 2.40M | New | $65.38M | 0.0% | New | 1 | SEC ↗ |
| 3 | Wellington Management ✦ | 2.40M | New | $65.38M | 0.0% | New | 1 | SEC ↗ |
| 4 | Wellington Management ✦ | 2.40M | New | $65.38M | 0.0% | New | 1 | SEC ↗ |
| 5 | Wellington Management ✦ | 2.40M | New | $65.38M | 0.0% | New | 1 | SEC ↗ |
| 6 | Viking Global Investors ✦ | 1.62M | New | $44.00M | 0.1% | New | 1 | SEC ↗ |
| 7 | T. Rowe Price ✦ | 1.56M | New | $42.40M | 0.0% | New | 1 | SEC ↗ |
| 8 | T. Rowe Price ✦ | 1.56M | New | $42.40M | 0.0% | New | 1 | SEC ↗ |
| 9 | Geode Capital Management ✦ (passive) | 434.65K | New | $11.83M | 0.0% | New | 1 | SEC ↗ |
| 10 | Geode Capital Management ✦ (passive) | 434.65K | New | $11.83M | 0.0% | New | 1 | SEC ↗ |
| 11 | State Street Global Advisors ✦ (passive) | 248.65K | New | $6.77M | 0.0% | New | 1 | SEC ↗ |
| 12 | Norges Bank ✦ (passive) | 127.44K | New | $3.47M | 0.0% | New | 1 | SEC ↗ |
| 13 | Millennium Management ✦ | 73.70K | New | $2.01M | 0.0% | New | 1 | SEC ↗ |
| 14 | Citadel Advisors ✦ | 48.49K | New | $1.32M | 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
| Wellington Management | $65.38M | 0.0% |
| Wellington Management | $65.38M | 0.0% |
| Wellington Management | $65.38M | 0.0% |
| Wellington Management | $65.38M | 0.0% |
| Wellington Management | $65.38M | 0.0% |
| Viking Global Investors | $44.00M | 0.1% |
| T. Rowe Price | $42.40M | 0.0% |
| T. Rowe Price | $42.40M | 0.0% |
| Geode Capital Management | $11.83M | 0.0% |
| Geode Capital Management | $11.83M | 0.0% |
| State Street Global Advisors | $6.77M | 0.0% |
| Norges Bank | $3.47M | 0.0% |
Exited
| No tracked exits this quarter. |
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q1 2025 ·
Methodology ·
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