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NewAmsterdam Pharma
NAMS

Overview Fund Activity

130 hedge funds and large institutions have $2.11B invested in NewAmsterdam Pharma in 2025 Q2 according to their latest regulatory filings, with 25 funds opening new positions, 58 increasing their positions, 30 reducing their positions, and 20 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
130
Holders Change
+4
Holders Change %
+3.17%
% of All Funds
1.74%
Holding in Top 10
7
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.09%
New
25
Increased
58
Reduced
30
Closed
20
Calls
$1.18M
Puts
$4.16M
Net Calls
-$2.98M
Net Calls Change
-$6.07M

Top Buyers

1
Capital World Investors
Capital World Investors
California
$152M
2
Adage Capital Partners
Adage Capital Partners
Massachusetts
$54.6M
3
DM
Deerfield Management
New York
$92.6M
4
MC
Maverick Capital
Texas
$27.7M
5
Fidelity Investments
Fidelity Investments
Massachusetts
$34.5M

Top Sellers

1
Jennison Associates
Jennison Associates
New York
$53.4M
2
SL
Siren LLC
Connecticut
$21.6M
3
CAM
Cormorant Asset Management
Massachusetts
$39.4M
4
WP
Woodline Partners
California
$34.4M
5
Citadel Advisors
Citadel Advisors
Florida
$5.8M
Name Holding Trade Value Shares
Change 		Shares
Change %
FLSM
1
Frazier Life Sciences Management
California
$301M +$8.89M +490,656 +3%
BCLSI
2
Bain Capital Life Sciences Investors
Massachusetts
$194M – – –
FIS
3
FCPM III Services
Netherlands
$193M -$5.49M -303,197 -3%
RCM
4
RA Capital Management
Massachusetts
$184M – – –
Capital World Investors
5
Capital World Investors
California
$152M +$28.8M +1,589,127 +23%
Viking Global Investors
6
Viking Global Investors
Connecticut
$126M – – –
DM
7
Deerfield Management
New York
$92.6M +$18.3M +1,011,996 +25%
Wellington Management Group
8
Wellington Management Group
Massachusetts
$60.2M -$3.97M -218,978 -6%
Adage Capital Partners
9
Adage Capital Partners
Massachusetts
$54.6M +$19.2M +1,062,359 +54%
Jennison Associates
10
Jennison Associates
New York
$53.4M -$18.5M -1,024,086 -26%
MVM
11
Medicxi Ventures Management
Jersey
$52M – – –
PCH
12
Polar Capital Holdings
United Kingdom
$45.6M +$4.85M +267,779 +12%
AllianceBernstein
13
AllianceBernstein
Tennessee
$42.2M +$1.62M +89,630 +4%
CAM
14
Cormorant Asset Management
Massachusetts
$39.4M -$11.8M -650,000 -23%
Capital International Investors
15
Capital International Investors
California
$37.4M – – –
Janus Henderson Group
16
Janus Henderson Group
United Kingdom
$35.6M -$4.31M -237,573 -11%
Fidelity Investments
17
Fidelity Investments
Massachusetts
$34.5M +$17M +940,726 +98%
WP
18
Woodline Partners
California
$34.4M -$9.87M -545,200 -22%
Pictet Asset Management
19
Pictet Asset Management
Switzerland
$32.9M +$86.5K +4,776 +0.3%
MC
20
Maverick Capital
Texas
$27.7M +$17.8M +982,405 +179%
JPMorgan Chase & Co
21
JPMorgan Chase & Co
New York
$26.4M +$8.47M +467,579 +47%
SL
22
Siren LLC
Connecticut
$21.6M -$13M -717,790 -38%
Goldman Sachs
23
Goldman Sachs
New York
$17.2M +$5.98M +330,417 +53%
TCM
24
TimesSquare Capital Management
New York
$15.8M -$336K -18,551 -2%
DFO
25
Duquesne Family Office
New York
$15.1M +$576K +31,815 +4%
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