AMTM

Amentum Holdings, Inc.
AMTM

Overview Fund Activity

413 hedge funds and large institutions have $3.46B invested in Amentum Holdings, Inc. in 2025 Q1 according to their latest regulatory filings, with 76 funds opening new positions, 110 increasing their positions, 147 reducing their positions, and 96 closing their positions.

Holders
413
Holders Change
-32
Holders Change %
-7.19%
% of All Funds
5.61%
Holding in Top 10
5
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.07%
New
76
Increased
110
Reduced
147
Closed
96
Calls
$62.3M
Puts
$41.7M
Net Calls
+$20.6M
Net Calls Change
-$29.2M

Top Buyers

1
Primecap Management
1
Primecap Management
California
$183M
2
FCM
2
Frontier Capital Management
Massachusetts
$65.1M
3
Invesco
3
Invesco
Georgia
$313M
4
Citadel Advisors
4
Citadel Advisors
Florida
$53.3M
5
DCM
5
Discovery Capital Management
Connecticut
$47.9M

Top Sellers

1
CCPM
1
Cooper Creek Partners Management
New York
$22.3M
2
Allspring Global Investments
2
Allspring Global Investments
North Carolina
$0
3
Wellington Management Group
3
Wellington Management Group
Massachusetts
$0
4
Norges Bank
4
Norges Bank
Norway
$0
5
Mirae Asset Global ETFs Holdings
5
Mirae Asset Global ETFs Holdings
Hong Kong
$0
Name Market Value Shares Shares
Change 		Shares
Change %
FGP
26
Freestone Grove Partners
California
$21.2M 1,164,835 +1,164,835 New
Dimensional Fund Advisors
27
Dimensional Fund Advisors
Texas
$20.3M 1,113,654 -40,476 -4%
KGI
28
Kopernik Global Investors
Florida
$19.6M 1,077,495 +311,513 +41%
6CM
29
683 Capital Management
New York
$18.4M 1,013,000 +588,000 +138%
Bank of America
30
Bank of America
North Carolina
$17.6M 968,538 +359,693 +59%
AC
31
Avenir Corporation
Virginia
$16.5M 904,162 +710,692 +367%
PCM
32
Penn Capital Management
Pennsylvania
$16.2M 889,434 +443,126 +99%
Northern Trust
33
Northern Trust
Illinois
$15.6M 854,423 +12,204 +1%
CAM
34
Cacti Asset Management
Georgia
$15.1M 834,442 +9,978 +1%
Bank of New York Mellon
35
Bank of New York Mellon
New York
$13.8M 760,509 +109,195 +17%
Principal Financial Group
36
Principal Financial Group
Iowa
$13M 712,172 +110,123 +18%
CA
37
CSM Advisors
Pennsylvania
$11.6M 638,057 -1,000 -0.2%
GCM
38
Ghisallo Capital Management
Massachusetts
$11.6M 635,569 +635,569 New
ECM
39
Engine Capital Management
New York
$11.6M 635,255 +13,855 +2%
VOYA Investment Management
40
VOYA Investment Management
Georgia
$11.4M 628,154 +224,039 +55%
New York State Common Retirement Fund
41
New York State Common Retirement Fund
New York
$11.1M 611,787 +232,835 +61%
Jane Street
42
Jane Street
New York
$11M 601,760 +574,270 +2,089%
Royal Bank of Canada
43
Royal Bank of Canada
Ontario, Canada
$10.6M 582,195 -36,708 -6%
LC
44
Loews Corp
New York
$10.4M 572,684 +572,684 New
Susquehanna International Group
45
Susquehanna International Group
Pennsylvania
$9.71M 533,567 -342,794 -39%
MCM
46
Moore Capital Management
New York
$9.07M 498,264 -93,926 -16%
Public Sector Pension Investment Board (PSP Investments)
47
Public Sector Pension Investment Board (PSP Investments)
Quebec, Canada
$8.28M 455,129 +145,943 +47%
DKCM
48
Davidson Kempner Capital Management
New York
$8.19M 450,000 +450,000 New
Goldman Sachs
49
Goldman Sachs
New York
$8.15M 447,578 +175,353 +64%
ACB
50
Aristotle Capital Boston
Massachusetts
$8.13M 446,612 -30,365 -6%
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