Security record

MTSR

Metsera, Inc. · Healthcare · Biotechnology

70.50 -0.4% mkt cap $7.43B quote delayed (FMP) · as of Oct 11 03:53 UTC — separate from filing data below

Q3 2025 Q2 2025 Q1 2025

13Tracked holders

+1Δ holders

32.25MShares held

$1.69BReported value

+2New positions

−1Exits

Strongly Rising Conviction score 60/100 2 quarters of rising tracked shares ●●○○○○ How these are computed → Explain this at the Research Desk →

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	—

Holder count

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 ↗ ×3
2	The Vanguard Group ✦ (passive)	5.82M	+290.6%	$304.82M	0.0%	▲ Add	2	SEC ↗ ×5
3	BlackRock ✦ (passive)	3.84M	+210.0%	$200.70M	0.0%	▲ Add	2	SEC ↗ ×10
4	Wellington Management ✦	3.66M	+6.8%	$191.50M	0.0%	▲ Add	3	SEC ↗ ×6
5	State Street Global Advisors ✦ (passive)	2.51M	+318.4%	$131.40M	0.0%	▲ Add	3	SEC ↗
6	Geode Capital Management ✦ (passive)	1.40M	+200.5%	$73.43M	0.0%	▲ Add	3	SEC ↗ ×2
7	JPMorgan Chase ✦	650.36K	—	$34.03M	0.0%	n/c	1	SEC ↗ ×14
8	Goldman Sachs Group ✦	176.85K	—	$9.25M	0.0%	n/c	1	SEC ↗ ×2
9	Millennium Management ✦	120.36K	New	$6.30M	0.0%	New	1	SEC ↗
10	Morgan Stanley ✦	92.94K	—	$4.86M	0.0%	n/c	1	SEC ↗ ×5
11	T. Rowe Price ✦	54.33K	-96.0%	$2.84M	0.0%	▼ Trim	3	SEC ↗
12	Citadel Advisors ✦	27.53K	-88.1%	$1.44M	0.0%	▼ Trim	3	SEC ↗
13	AQR Capital Management ✦	6.67K	New	$348,832	0.0%	New	1	SEC ↗ ×3

“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%

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.

CMI13shared holders BILL13shared holders LYV13shared holders EQIX13shared holders TBPH13shared holders

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 · Get this via the API

☆ MTSR

New buyers

Exited

MTSR