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NewAmsterdam Pharma
NAMS

137 hedge funds and large institutions have $3.42B invested in NewAmsterdam Pharma in 2025 Q3 according to their latest regulatory filings, with 21 funds opening new positions, 48 increasing their positions, 40 reducing their positions, and 15 closing their positions.

New
Increased
Maintained
Reduced
Closed

62% more capital invested

Capital invested by funds: $2.11B → $3.42B (+$1.32B)

40% more first-time investments, than exits

New positions opened: 21 | Existing positions closed: 15

20% more repeat investments, than reductions

Existing positions increased: 48 | Existing positions reduced: 40

5% more funds holding

Funds holding: 131 → 137 (+6)

3.41% more ownership

Funds ownership: 103.65% → 107.06% (+3.4%)

0% more funds holding in top 10

Funds holding in top 10: 7 → 7 (0)

96% less call options, than puts

Call options by funds: $2.48M | Put options by funds: $69.2M

Holders
137
Holders Change
+6
Holders Change %
+4.58%
% of All Funds
1.8%
Holding in Top 10
7
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.09%
New
21
Increased
48
Reduced
40
Closed
15
Calls
$2.48M
Puts
$69.2M
Net Calls
-$66.7M
Net Calls Change
-$63.7M

Top Buyers

Rank Fund Capital Flow
1
Fidelity Investments
Fidelity Investments
Massachusetts
+$87M
2
Capital World Investors
Capital World Investors
California
+$34.4M
3
Jennison Associates
Jennison Associates
New York
+$30M
4
DFO
Duquesne Family Office
New York
+$26.2M
5
Morgan Stanley
Morgan Stanley
New York
+$20.6M

Top Sellers

Rank Fund Capital Flow
1
FIS
FCPM III Services
Netherlands
-$34M
2
DM
Deerfield Management
New York
-$20.4M
3
WP
Woodline Partners
California
-$17.7M
4
Pictet Asset Management
Pictet Asset Management
Switzerland
-$12.6M
5
Viking Global Investors
Viking Global Investors
Connecticut
-$12.1M
Name Holding Trade Value Shares
Change 		Change in
Stake
YC
76
Yarbrough Capital
Tennessee
$681K – – –
LCM
77
Legato Capital Management
California
$665K +$110K +4,581 +24%
Manulife (Manufacturers Life Insurance)
78
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$640K +$279K +11,637 +107%
Squarepoint
79
Squarepoint
New York
$596K +$160K +6,680 +47%
HP
80
HealthInvest Partners
Sweden
$585K +$873K +36,402 +23%
CUAMC
81
China Universal Asset Management Company
China
$561K -$67.3K -2,807 -12%
VOYA Investment Management
82
VOYA Investment Management
Georgia
$549K +$463K +19,300 New
TD Asset Management
83
TD Asset Management
Ontario, Canada
$512K +$431K +18,000 New
KeyBank National Association
84
KeyBank National Association
Ohio
$455K +$384K +16,014 New
PWM
85
PTM Wealth Management
United States
$419K – – –
BG
86
Bellevue Group
Switzerland
$416K -$142K -5,944 -29%
OAC
87
OMERS Administration Corp
Ontario, Canada
$395K +$333K +13,900 New
Verition Fund Management
88
Verition Fund Management
Connecticut
$393K – – –
ASRS
89
Arizona State Retirement System
Arizona
$377K +$11.6K +483 +4%
Bank of Montreal
90
Bank of Montreal
Ontario, Canada
$352K +$297K +12,388 New
JFG
91
Jefferies Financial Group
New York
$341K +$288K +12,000 New
LBA
92
Letko, Brosseau & Associates
Quebec, Canada
$335K – – –
Teacher Retirement System of Texas
93
Teacher Retirement System of Texas
Texas
$307K -$22K -917 -8%
AQR Capital Management
94
AQR Capital Management
Connecticut
$290K +$244K +10,196 New
KK
95
KLP Kapitalforvaltning
Norway
$259K – – –
MFIM
96
Mesirow Financial Investment Management
Illinois
$234K +$197K +8,215 New
CIBC Private Wealth Group
97
CIBC Private Wealth Group
Georgia
$217K – – –
XT
98
XTX Topco
Cayman Islands
$216K +$182K +7,579 New
AF
99
Avanza Fonder
Sweden
$213K – – –
MFGP
100
Marshall Financial Group (Pennsylvania)
Pennsylvania
$213K +$180K +7,500 New
2 3
4
5 6

NAMS Hedge Fund Activity: Q3 2025 in Review

137 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in NewAmsterdam Pharma (NAMS) for Q3 2025, worth a combined $3.42B — up 62% from $2.11B a quarter earlier.

Buyers outnumbered sellers: 21 funds opened new NAMS positions and 15 closed out — a net gain of 6 holders — while 48 added to existing stakes and 40 trimmed.

The largest buyer was Fidelity Investments, adding an estimated $87M. The largest seller was FCPM III Services, cutting an estimated $34M.

  • 137 institutional investors held NewAmsterdam Pharma (NAMS) as of Q3 2025, up from 131 in Q2 2025.
  • Funds reported $3.42B of NewAmsterdam Pharma stock for Q3 2025, up 62% quarter-over-quarter.
  • 21 funds opened new NewAmsterdam Pharma positions in Q3 2025 and 15 closed out, a net change of +6 holders.
  • The largest NewAmsterdam Pharma buyer in Q3 2025 was Fidelity Investments, an estimated $87M added.
  • The largest NewAmsterdam Pharma seller in Q3 2025 was FCPM III Services, an estimated $34M sold.

Based on aggregated 13F filings for Q3 2025.