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MTSR

Metsera Inc
MTSR

Delisted

MTSR was delisted on the 13th of November, 2025.

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80 hedge funds and large institutions have $1.49B invested in Metsera Inc in 2025 Q1 according to their latest regulatory filings, with 80 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

New
Increased
Maintained
Reduced
Closed

52.02% more ownership

Funds ownership: 0% → 52.02% (+52%)

Holders
80
Holders Change
+80
Holders Change %
–
% of All Funds
1.07%
Holding in Top 10
4
Holding in Top 10 Change
+4
Holding in Top 10 Change %
% of All Funds
0.05%
New
80
Increased
–
Reduced
–
Closed
–
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
Fidelity Investments
Fidelity Investments
Massachusetts
+$430M
2
AI
Alphabet Inc
California
+$141M
3
MCMU
MIC Capital Management (UK)
United Kingdom
+$129M
4
VA
VR Adviser
New York
+$106M
5
Janus Henderson Group
Janus Henderson Group
+$82.4M

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change 		Change in
Stake
Fidelity Investments
1
Fidelity Investments
Massachusetts
$413M +$430M +15,167,808 New
AI
2
Alphabet Inc
California
$135M +$141M +4,961,744 New
MCMU
3
MIC Capital Management (UK)
United Kingdom
$124M +$129M +4,539,540 New
VA
4
VR Adviser
New York
$102M +$106M +3,750,662 New
Janus Henderson Group
5
Janus Henderson Group
$81.3M +$82.4M +2,905,462 New
T. Rowe Price Investment Management
6
T. Rowe Price Investment Management
Maryland
$78.7M +$82M +2,893,009 New
Wellington Management Group
7
Wellington Management Group
Massachusetts
$65.4M +$68.1M +2,401,991 New
AWG
8
Alpha Wave Global
New York
$64.9M +$67.6M +2,384,050 New
BlackRock
9
BlackRock
New York
$49.4M +$51.4M +1,814,353 New
Viking Global Investors
10
Viking Global Investors
Connecticut
$44M +$45.8M +1,616,612 New
T. Rowe Price Associates
11
T. Rowe Price Associates
Maryland
$42.4M +$44.1M +1,557,487 New
Vanguard Group
12
Vanguard Group
Pennsylvania
$39.9M +$41.6M +1,467,011 New
AllianceBernstein
13
AllianceBernstein
Tennessee
$32.7M +$34.1M +1,202,952 New
PBA
14
Paradigm Biocapital Advisors
New York
$32.4M +$33.8M +1,191,462 New
DTC
15
Deep Track Capital
Connecticut
$29.8M +$31M +1,094,408 New
RCM
16
RA Capital Management
Massachusetts
$18.4M +$19.1M +675,525 New
DM
17
Deerfield Management
New York
$13.6M +$14.2M +500,000 New
Massachusetts Financial Services
18
Massachusetts Financial Services
Massachusetts
$13.1M +$13.7M +481,679 New
Geode Capital Management
19
Geode Capital Management
Massachusetts
$11.8M +$12.3M +434,647 New
CAM
20
Cormorant Asset Management
Massachusetts
$10.9M +$11.3M +400,000 New
Jennison Associates
21
Jennison Associates
New York
$9.68M +$10.1M +355,567 New
WP
22
Woodline Partners
California
$8.17M +$8.51M +300,217 New
American Century Companies
23
American Century Companies
Missouri
$7.79M +$8.11M +286,207 New
EAM
24
Eventide Asset Management
Massachusetts
$6.8M +$7.09M +250,000 New
State Street
25
State Street
Massachusetts
$6.77M +$7.05M +248,648 New
1
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MTSR Hedge Fund Activity: Q1 2025 in Review

80 of the 7,464 institutional investors tracked by Wall St. Rank reported a position in Metsera Inc (MTSR) for Q1 2025, worth a combined $1.49B.

Buyers outnumbered sellers: 80 funds opened new MTSR positions and 0 closed out — a net gain of 80 holders — while 0 added to existing stakes and 0 trimmed.

The largest buyer was Fidelity Investments, opening a new position worth an estimated $430M.

  • 80 institutional investors held Metsera Inc (MTSR) as of Q1 2025, up from 0 in Q4 2024.
  • Funds reported $1.49B of Metsera Inc stock for Q1 2025.
  • 80 funds opened new Metsera Inc positions in Q1 2025 and 0 closed out, a net change of +80 holders.
  • The largest Metsera Inc buyer in Q1 2025 was Fidelity Investments, an estimated $430M added.

Based on aggregated 13F filings for Q1 2025.