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

Top Sellers

1
Citadel Advisors
1
Citadel Advisors
Florida
$8.1M
2
Balyasny Asset Management
2
Balyasny Asset Management
Illinois
$0
3
CCPM
3
Cooper Creek Partners Management
New York
$0
4
VC
4
Voss Capital
Texas
$33.1M
5
UBS Group
5
UBS Group
Switzerland
$18.1M
Name Holding Trade Value Shares
Change 		Shares
Change %
Commonwealth Equity Services
176
Commonwealth Equity Services
Massachusetts
$523K -$141K -5,977 -21%
WSFS
177
Wilmington Savings Fund Society
Delaware
$492K +$23.2K +983 +5%
GIP
178
Granite Investment Partners
California
$472K -$1.89K -80 -0.4%
MOACM
179
Mutual of America Capital Management
New York
$458K -$37.3K -1,578 -8%
SNBOSCI
180
Security National Bank of Sioux City Iowa
Iowa
$455K +$52K +2,204 +13%
PF
181
Phoenix Financial
Israel
$447K – – –
Osaic Holdings
182
Osaic Holdings
Arizona
$433K -$10.6K -493 -2%
Cambridge Investment Research Advisors
183
Cambridge Investment Research Advisors
Iowa
$429K +$70.6K +2,992 +20%
Carson Wealth (CWM LLC)
184
Carson Wealth (CWM LLC)
Nebraska
$413K +$311K +13,148 +303%
Deutsche Bank
185
Deutsche Bank
Germany
$411K +$7.34K +311 +2%
IVP
186
Intrinsic Value Partners
Arizona
$394K +$18.7K +791 +5%
LIM
187
Leavell Investment Management
Alabama
$381K +$107K +4,524 +39%
IMC Chicago
188
IMC Chicago
Illinois
$371K +$371K +15,710 New
AC
189
AXQ Capital
New Jersey
$369K +$369K +15,609 New
First Manhattan
190
First Manhattan
New York
$364K -$13.6K -574 -4%
RCG
191
Rock Creek Group
District of Columbia
$354K -$236K -10,000 -40%
VPIM
192
Vanguard Personalized Indexing Management
California
$352K +$352K +14,605 New
HighTower Advisors
193
HighTower Advisors
Illinois
$351K -$43.5K -1,843 -11%
CWM
194
Cahaba Wealth Management
Georgia
$342K +$19.6K +829 +6%
Cetera Investment Advisers
195
Cetera Investment Advisers
Illinois
$335K +$335K +14,179 New
FBT
196
First Bank & Trust
South Dakota
$332K -$7.41K -314 -2%
CIBC Asset Management
197
CIBC Asset Management
Ontario, Canada
$330K +$19.8K +839 +6%
PNC Financial Services Group
198
PNC Financial Services Group
Pennsylvania
$329K -$38.7K -1,638 -11%
Two Sigma Investments
199
Two Sigma Investments
New York
$324K -$953K -40,371 -75%
AC
200
Aristeia Capital
Connecticut
$320K +$320K +13,568 New
6 7
8
9 10