MTSR

Metsera, Inc. Common Stock
MTSR

Overview Fund Activity

108 hedge funds and large institutions have $1.74B invested in Metsera, Inc. Common Stock in 2025 Q2 according to their latest regulatory filings, with 38 funds opening new positions, 47 increasing their positions, 11 reducing their positions, and 9 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
108
Holders Change
+29
Holders Change %
+36.71%
% of All Funds
1.45%
Holding in Top 10
4
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.05%
New
38
Increased
47
Reduced
11
Closed
9
Calls
$1.62M
Puts
$2.69M
Net Calls
-$1.07M
Net Calls Change
-$1.07M

Top Buyers

1
SoftBank Group
1
SoftBank Group
Japan
$137M
2
Wellington Management Group
2
Wellington Management Group
Massachusetts
$97.5M
3
Fidelity Investments
3
Fidelity Investments
Massachusetts
$448M
4
Janus Henderson Group
4
Janus Henderson Group
United Kingdom
$96.4M
5
State Street
5
State Street
Massachusetts
$17.1M

Top Sellers

1
PBA
1
Paradigm Biocapital Advisors
New York
$0
2
BlackRock
2
BlackRock
New York
$35.2M
3
DM
3
Deerfield Management
New York
$0
4
Massachusetts Financial Services
4
Massachusetts Financial Services
Massachusetts
$7.22M
5
T. Rowe Price Associates
5
T. Rowe Price Associates
Maryland
$38.9M
Name Holding Trade Value Shares
Change 		Shares
Change %
Fidelity Investments
1
Fidelity Investments
Massachusetts
$448M +$16.8M +590,522 +4%
AI
2
Alphabet Inc
California
$141M – – –
SoftBank Group
3
SoftBank Group
Japan
$137M +$137M +4,819,884 New
MCMU
4
MIC Capital Management (UK)
United Kingdom
$129M – – –
VA
5
VR Adviser
New York
$107M – – –
Wellington Management Group
6
Wellington Management Group
Massachusetts
$97.5M +$29.2M +1,025,441 +43%
Janus Henderson Group
7
Janus Henderson Group
United Kingdom
$96.4M +$13.7M +482,501 +17%
T. Rowe Price Investment Management
8
T. Rowe Price Investment Management
Maryland
$85.5M +$3.18M +111,844 +4%
AWG
9
Alpha Wave Global
New York
$67.8M – – –
Viking Global Investors
10
Viking Global Investors
Connecticut
$46M – – –
Vanguard Group
11
Vanguard Group
Pennsylvania
$42.4M +$696K +24,468 +2%
AllianceBernstein
12
AllianceBernstein
Tennessee
$40.4M +$6.21M +218,407 +18%
T. Rowe Price Associates
13
T. Rowe Price Associates
Maryland
$38.9M -$5.37M -188,914 -12%
BlackRock
14
BlackRock
New York
$35.2M -$16.4M -577,228 -32%
DTC
15
Deep Track Capital
Connecticut
$31.1M – – –
RCM
16
RA Capital Management
Massachusetts
$19.2M – – –
State Street
17
State Street
Massachusetts
$17.1M +$10M +351,555 +141%
Geode Capital Management
18
Geode Capital Management
Massachusetts
$13.3M +$919K +32,308 +7%
WP
19
Woodline Partners
California
$11.4M +$2.86M +100,568 +33%
CAM
20
Cormorant Asset Management
Massachusetts
$11.4M – – –
EAM
21
Eventide Asset Management
Massachusetts
$11.3M +$4.16M +146,160 +58%
RA
22
Royce & Associates
New York
$9.42M +$9.42M +331,280 New
Jennison Associates
23
Jennison Associates
New York
$8.88M -$1.23M -43,277 -12%
American Century Companies
24
American Century Companies
Missouri
$8.18M +$41.7K +1,467 +0.5%
EC
25
EcoR1 Capital
California
$7.73M +$6.3M +221,529 +443%
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