Security record
MTSR
Metsera, Inc. · Healthcare · Biotechnology
13Tracked holders
+1Δ holders
32.25MShares held
$1.69BReported value
+2New positions
−1Exits
Momentum inputs (comparable managers):
holder breadth +8.3% ·
share flow +18.9% ·
net new positions +7.7%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 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 · Q3 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Fidelity (FMR) ✦ | 13.89M | -11.8% | $726.97M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 2 | Fidelity (FMR) ✦ | 13.89M | -11.8% | $726.97M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 3 | Fidelity (FMR) ✦ | 13.89M | -11.8% | $726.97M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 4 | The Vanguard Group ✦ (passive) | 5.82M | +290.6% | $304.82M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | The Vanguard Group ✦ (passive) | 5.82M | +290.6% | $304.82M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 6 | The Vanguard Group ✦ (passive) | 5.82M | +290.6% | $304.82M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 7 | The Vanguard Group ✦ (passive) | 5.82M | +290.6% | $304.82M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 8 | The Vanguard Group ✦ (passive) | 5.82M | +290.6% | $304.82M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 3.84M | +210.0% | $200.70M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 3.84M | +210.0% | $200.70M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 3.84M | +210.0% | $200.70M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 3.84M | +210.0% | $200.70M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 3.84M | +210.0% | $200.70M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 3.84M | +210.0% | $200.70M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 3.84M | +210.0% | $200.70M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 3.84M | +210.0% | $200.70M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 3.84M | +210.0% | $200.70M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 18 | BlackRock ✦ (passive) | 3.84M | +210.0% | $200.70M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 19 | Wellington Management ✦ | 3.66M | +6.8% | $191.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 20 | Wellington Management ✦ | 3.66M | +6.8% | $191.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 21 | Wellington Management ✦ | 3.66M | +6.8% | $191.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 22 | Wellington Management ✦ | 3.66M | +6.8% | $191.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 23 | Wellington Management ✦ | 3.66M | +6.8% | $191.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 24 | Wellington Management ✦ | 3.66M | +6.8% | $191.50M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 25 | State Street Global Advisors ✦ (passive) | 2.51M | +318.4% | $131.40M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 26 | Geode Capital Management ✦ (passive) | 1.40M | +200.5% | $73.43M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 27 | Geode Capital Management ✦ (passive) | 1.40M | +200.5% | $73.43M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 28 | JPMorgan Chase ✦ | 650.36K | — | $34.03M | 0.0% | n/c | 1 | SEC ↗ |
| 29 | JPMorgan Chase ✦ | 650.36K | — | $34.03M | 0.0% | n/c | 1 | SEC ↗ |
| 30 | JPMorgan Chase ✦ | 650.36K | — | $34.03M | 0.0% | n/c | 1 | SEC ↗ |
| 31 | JPMorgan Chase ✦ | 650.36K | — | $34.03M | 0.0% | n/c | 1 | SEC ↗ |
| 32 | JPMorgan Chase ✦ | 650.36K | — | $34.03M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | JPMorgan Chase ✦ | 650.36K | — | $34.03M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | JPMorgan Chase ✦ | 650.36K | — | $34.03M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | JPMorgan Chase ✦ | 650.36K | — | $34.03M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | JPMorgan Chase ✦ | 650.36K | — | $34.03M | 0.0% | n/c | 1 | SEC ↗ |
| 37 | JPMorgan Chase ✦ | 650.36K | — | $34.03M | 0.0% | n/c | 1 | SEC ↗ |
| 38 | JPMorgan Chase ✦ | 650.36K | — | $34.03M | 0.0% | n/c | 1 | SEC ↗ |
| 39 | JPMorgan Chase ✦ | 650.36K | — | $34.03M | 0.0% | n/c | 1 | SEC ↗ |
| 40 | JPMorgan Chase ✦ | 650.36K | — | $34.03M | 0.0% | n/c | 1 | SEC ↗ |
| 41 | JPMorgan Chase ✦ | 650.36K | — | $34.03M | 0.0% | n/c | 1 | SEC ↗ |
| 42 | Goldman Sachs Group ✦ | 176.85K | — | $9.25M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | Goldman Sachs Group ✦ | 176.85K | — | $9.25M | 0.0% | n/c | 1 | SEC ↗ |
| 44 | Millennium Management ✦ | 120.36K | New | $6.30M | 0.0% | New | 1 | SEC ↗ |
| 45 | Morgan Stanley ✦ | 92.94K | — | $4.86M | 0.0% | n/c | 1 | SEC ↗ |
| 46 | Morgan Stanley ✦ | 92.94K | — | $4.86M | 0.0% | n/c | 1 | SEC ↗ |
| 47 | Morgan Stanley ✦ | 92.94K | — | $4.86M | 0.0% | n/c | 1 | SEC ↗ |
| 48 | Morgan Stanley ✦ | 92.94K | — | $4.86M | 0.0% | n/c | 1 | SEC ↗ |
| 49 | Morgan Stanley ✦ | 92.94K | — | $4.86M | 0.0% | n/c | 1 | SEC ↗ |
| 50 | T. Rowe Price ✦ | 54.33K | -96.0% | $2.84M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 51 | Citadel Advisors ✦ | 27.53K | -88.1% | $1.44M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 52 | AQR Capital Management ✦ | 6.67K | New | $348,832 | 0.0% | New | 1 | SEC ↗ |
| 53 | AQR Capital Management ✦ | 6.67K | New | $348,832 | 0.0% | New | 1 | SEC ↗ |
| 54 | AQR Capital Management ✦ | 6.67K | New | $348,832 | 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
| Millennium Management | $6.30M | 0.0% |
| AQR Capital Management | $348,832 | 0.0% |
| AQR Capital Management | $348,832 | 0.0% |
| AQR Capital Management | $348,832 | 0.0% |
Exited
| Viking Global Investors | $45.99M | was 0.1% |
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: Q3 2025 ·
Methodology ·
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