AMTM

Amentum Holdings, Inc.
AMTM

Overview Fund Activity

453 hedge funds and large institutions have $4.73B invested in Amentum Holdings, Inc. in 2025 Q2 according to their latest regulatory filings, with 112 funds opening new positions, 227 increasing their positions, 99 reducing their positions, and 65 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
453
Holders Change
+40
Holders Change %
+9.69%
% of All Funds
6.08%
Holding in Top 10
9
Holding in Top 10 Change
+4
Holding in Top 10 Change %
+80%
% of All Funds
0.12%
New
112
Increased
227
Reduced
99
Closed
65
Calls
$56.6M
Puts
$31.3M
Net Calls
+$25.2M
Net Calls Change
+$4.65M

Top Buyers

1
Millennium Management
Millennium Management
New York
$110M
2
Invesco
Invesco
Georgia
$462M
3
Primecap Management
Primecap Management
California
$284M
4
FCM
Frontier Capital Management
Massachusetts
$129M
5
Mirae Asset Global ETFs Holdings
Mirae Asset Global ETFs Holdings
Hong Kong
$32.6M

Top Sellers

1
Citadel Advisors
Citadel Advisors
Florida
$8.1M
2
Balyasny Asset Management
Balyasny Asset Management
Illinois
$0
3
CCPM
Cooper Creek Partners Management
New York
$0
4
VC
Voss Capital
Texas
$33.1M
5
UBS Group
UBS Group
Switzerland
$18.1M
Name Holding Trade Value Shares
Change 		Shares
Change %
Stifel Financial
151
Stifel Financial
Missouri
$779K +$467K +19,767 +149%
CAPTRUST Financial Advisors
152
CAPTRUST Financial Advisors
North Carolina
$728K +$241K +10,200 +49%
Jones Financial Companies
153
Jones Financial Companies
Missouri
$708K +$60.2K +2,562 +9%
NRS
154
Neville Rodie & Shaw
New York
$695K -$564K -23,901 -45%
CSIC
155
Clifford Swan Investment Counsel
California
$675K -$1.28K -54 -0.2%
OTL
156
Oak Thistle LLC
New York
$667K +$667K +28,230 New
SI
157
Stephens Inc
Arkansas
$659K -$114K -4,829 -15%
LIM
158
Lathrop Investment Management
Arkansas
$657K -$300K -12,713 -31%
SNBOSD
159
Security National Bank of So Dak
Iowa
$634K +$47.6K +2,016 +8%
Zurich Cantonal Bank
160
Zurich Cantonal Bank
Switzerland
$634K -$191K -8,100 -23%
SC
161
Savant Capital
Illinois
$622K +$622K +26,359 New
MWM
162
Modera Wealth Management
New Jersey
$619K -$38.3K -1,624 -6%
SIA
163
Sit Investment Associates
Minnesota
$619K +$35.5K +1,502 +6%
ET
164
Entropy Technologies
New York
$618K +$618K +26,167 New
US Bancorp
165
US Bancorp
Minnesota
$617K +$60.5K +2,564 +11%
PCP
166
Proficio Capital Partners
Massachusetts
$615K +$72.1K +3,054 +13%
MIM
167
Marco Investment Management
Georgia
$594K -$96.5K -4,088 -14%
GF
168
Gabelli Funds
New York
$592K +$592K +25,053 New
IR
169
IAT Reinsurance
New York
$583K +$583K +24,693 New
WB
170
WesBanco Bank
West Virginia
$578K +$9.82K +416 +2%
PAM
171
Peak Asset Management
Colorado
$567K – – –
AG
172
Algert Global
California
$564K +$564K +23,880 New
Pictet Asset Management
173
Pictet Asset Management
Switzerland
$548K +$45.4K +1,924 +9%
Truist Financial
174
Truist Financial
North Carolina
$532K +$18.7K +794 +4%
SIM
175
Sandia Investment Management
Massachusetts
$531K +$63.7K +2,700 +14%
5 6
7
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