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
Mirae Asset Global ETFs Holdings
4
Mirae Asset Global ETFs Holdings
Hong Kong
$0
5
CP
5
Castalian Partners
Minnesota
$5.54M
Name Holding Trade Value Shares
Change 		Shares
Change %
AA
101
Ancora Advisors
Ohio
$1.25M +$1.25M +68,705 +105,700%
Walleye Trading
102
Walleye Trading
New York
$1.25M +$650K +35,698 +109%
CM
103
Caption Management
Oklahoma
$1.24M -$754K -41,451 -38%
Treasurer of the State of North Carolina
104
Treasurer of the State of North Carolina
North Carolina
$1.23M +$195K +10,690 +19%
IMRF
105
Illinois Municipal Retirement Fund
Illinois
$1.21M +$1.21M +66,507 New
HCM
106
Hahn Capital Management
California
$1.19M -$213K -11,689 -15%
KCM
107
Kodai Capital Management
Illinois
$1.19M +$1.19M +65,540 New
CC
108
Centiva Capital
New York
$1.19M -$708K -38,882 -37%
Teacher Retirement System of Texas
109
Teacher Retirement System of Texas
Texas
$1.17M -$410K -22,522 -26%
WHCM
110
Wolf Hill Capital Management
Connecticut
$1.16M +$1.16M +63,857 New
BMCM
111
Bryn Mawr Capital Management
Pennsylvania
$1.14M +$52.7K +2,898 +5%
WAM
112
Weiss Asset Management
Massachusetts
$1.11M +$563K +30,922 +103%
CBA
113
Coastal Bridge Advisors
Connecticut
$1.07M +$1.07M +58,626 New
LSERS
114
Louisiana State Employees Retirement System
Louisiana
$1.06M -$29.1K -1,600 -3%
Natixis Advisors
115
Natixis Advisors
Massachusetts
$1.04M +$613K +33,686 +145%
AAM
116
Advisors Asset Management
Colorado
$1.03M -$267K -14,647 -21%
TRSOTSOK
117
Teachers Retirement System of the State of Kentucky
Kentucky
$1.02M +$113K +6,232 +13%
Barclays
118
Barclays
United Kingdom
$1.01M -$2.08M -114,147 -67%
AllianceBernstein
119
AllianceBernstein
Tennessee
$1M +$130K +7,126 +15%
William Blair & Company
120
William Blair & Company
Illinois
$986K -$40.4K -2,219 -4%
Two Sigma Investments
121
Two Sigma Investments
New York
$985K +$985K +54,100 New
WTA
122
Washington Trust Advisors
Massachusetts
$980K -$480K -26,394 -33%
EGM
123
Engineers Gate Manager
New York
$980K +$980K +53,830 New
NRS
124
Neville Rodie & Shaw
New York
$971K -$503K -27,656 -34%
Simplex Trading
125
Simplex Trading
Illinois
$961K -$3.04M -167,154 -76%
3 4
5
6 7