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 %
Wealth Enhancement Advisory Services
76
Wealth Enhancement Advisory Services
Minnesota
$3.76M +$80K +3,303 +2%
New York State Teachers Retirement System (NYSTRS)
77
New York State Teachers Retirement System (NYSTRS)
New York
$3.25M -$24.8K -1,051 -0.8%
AA
78
Ancora Advisors
Ohio
$3.12M +$1.5M +63,434 +92%
Citigroup
79
Citigroup
New York
$3.07M +$285K +12,055 +10%
CP
80
CenterBook Partners
Connecticut
$2.96M -$6.83M -289,234 -70%
State Board of Administration of Florida Retirement System
81
State Board of Administration of Florida Retirement System
Florida
$2.89M +$183K +7,730 +7%
WG
82
Winton Group
United Kingdom
$2.65M -$101K -4,259 -4%
SAM
83
Soviero Asset Management
New York
$2.6M +$2.6M +110,000 New
GI
84
GAMCO Investors
Connecticut
$2.57M +$2.57M +108,670 New
Nomura Holdings
85
Nomura Holdings
Japan
$2.55M +$431K +18,269 +20%
T. Rowe Price Associates
86
T. Rowe Price Associates
Maryland
$2.51M +$426K +18,046 +20%
RA
87
RFG Advisory
Alabama
$2.41M +$2.41M +102,171 New
State of New Jersey Common Pension Fund D
88
State of New Jersey Common Pension Fund D
New Jersey
$2.36M +$57.9K +2,451 +3%
NGM
89
North Growth Management
British Columbia, Canada
$2.3M +$118K +5,000 +5%
Envestnet Asset Management
90
Envestnet Asset Management
Illinois
$2.29M -$9.52K -403 -0.4%
Verition Fund Management
91
Verition Fund Management
Connecticut
$2.18M -$4.68M -198,225 -68%
State of Wisconsin Investment Board
92
State of Wisconsin Investment Board
Wisconsin
$2.17M -$91.1K -3,857 -4%
JPMorgan Chase & Co
93
JPMorgan Chase & Co
New York
$2.16M +$85.2K +3,608 +4%
LPL Financial
94
LPL Financial
California
$2.14M -$54K -2,289 -2%
SOADOR
95
State of Alaska Department of Revenue
Alaska
$2.12M +$247K +10,487 +13%
Universal-Beteiligungs- und Servicegesellschaft
96
Universal-Beteiligungs- und Servicegesellschaft
Germany
$1.98M +$1.47M +62,304 +290%
CAG
97
Crestwood Advisors Group
Massachusetts
$1.93M +$28.7K +1,215 +2%
IMRF
98
Illinois Municipal Retirement Fund
Illinois
$1.78M +$211K +8,945 +13%
AGM
99
Alpine Global Management
New York
$1.77M -$589K -24,944 -25%
Marshall Wace
100
Marshall Wace
United Kingdom
$1.77M -$1.71M -72,521 -49%
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4
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