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AMTM

Amentum Holdings

486 hedge funds and large institutions have $5.28B invested in Amentum Holdings in 2026 Q1 according to their latest regulatory filings, with 71 funds opening new positions, 150 increasing their positions, 152 reducing their positions, and 60 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more first-time investments, than exits

New positions opened: | Existing positions closed:

more ownership

Funds ownership:

more funds holding

Funds holding:

1% less repeat investments, than reductions

Existing positions increased: 150 | Existing positions reduced: 152

6% less capital invested

Capital invested by funds: $5.64B → $5.28B (-$362M)

10% less funds holding in top 10

Funds holding in top 10: 109 (-1)

Holders
486
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
9
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$134M
Puts
$43M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
Janus Henderson Group
126
Janus Henderson Group
United Kingdom
$1.81M
LSERS
127
Louisiana State Employees Retirement System
Louisiana
$1.78M
Treasurer of the State of North Carolina
128
Treasurer of the State of North Carolina
North Carolina
$1.78M
D.E. Shaw & Co
129
D.E. Shaw & Co
New York
$1.73M
Creative Planning
130
Creative Planning
Kansas
$1.69M
Envestnet Asset Management
131
Envestnet Asset Management
Illinois
$1.61M
VGA
132
Vanguard Global Advisers
Pennsylvania
$1.6M
KPF
133
K2 Principal Fund
Ontario, Canada
$1.56M
AB
134
Amalgamated Bank
New York
$1.52M
CAG
135
Crestwood Advisors Group
Massachusetts
$1.48M
WG
136
Winton Group
United Kingdom
$1.45M
Natixis Advisors
137
Natixis Advisors
Massachusetts
$1.42M
MG
138
Marex Group
$1.38M
MFS
139
Mirabella Financial Services
United Kingdom
$1.37M
WAM
140
Wolverine Asset Management
Illinois
$1.35M
HCM
141
Hahn Capital Management
California
$1.33M
Lido Advisors
142
Lido Advisors
California
$1.31M
AAM
143
Advisors Asset Management
Colorado
$1.3M
Victory Capital Management
144
Victory Capital Management
Texas
$1.3M
William Blair & Company
145
William Blair & Company
Illinois
$1.29M
Ohio Public Employees Retirement System (OPERS)
146
Ohio Public Employees Retirement System (OPERS)
Ohio
$1.25M
Barclays
147
Barclays
United Kingdom
$1.22M
MC
148
Maverick Capital
Texas
$1.21M
State of Tennessee, Department of Treasury
149
State of Tennessee, Department of Treasury
Tennessee
$1.21M
HTI
150
Hikari Tsushin Inc
Japan
$1.18M