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AMTM

Amentum Holdings
AMTM

462 hedge funds and large institutions have $4.63B invested in Amentum Holdings in 2025 Q3 according to their latest regulatory filings, with 76 funds opening new positions, 104 increasing their positions, 179 reducing their positions, and 69 closing their positions.

New
Increased
Maintained
Reduced
Closed

49% more call options, than puts

Call options by funds: $22.9M | Put options by funds: $15.4M

10% more first-time investments, than exits

New positions opened: 76 | Existing positions closed: 69

0% more funds holding

Funds holding: 460 → 462 (+2)

0% more funds holding in top 10

Funds holding in top 10: 9 → 9 (0)

2% less capital invested

Capital invested by funds: $4.73B → $4.63B (-$98.4M)

2.85% less ownership

Funds ownership: 82.34% → 79.49% (-2.8%)

42% less repeat investments, than reductions

Existing positions increased: 104 | Existing positions reduced: 179

Holders
462
Holders Change
+2
Holders Change %
+0.43%
% of All Funds
6.06%
Holding in Top 10
9
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.12%
New
76
Increased
104
Reduced
179
Closed
69
Calls
$22.9M
Puts
$15.4M
Net Calls
+$7.56M
Net Calls Change
-$17.7M

Top Buyers

1
Invesco
Invesco
Georgia
+$61.8M
2
Fidelity Investments
Fidelity Investments
Massachusetts
+$40.4M
3
Verition Fund Management
Verition Fund Management
Connecticut
+$25.4M
4
Point72 Asset Management
Point72 Asset Management
Connecticut
+$25.1M
5
Mirae Asset Global ETFs Holdings
Mirae Asset Global ETFs Holdings
Hong Kong
+$17.1M

Top Sellers

1
Millennium Management
Millennium Management
New York
-$98M
2
VanEck Associates
VanEck Associates
New York
-$56.1M
3
DCM
Discovery Capital Management
Connecticut
-$28.2M
4
BlackRock
BlackRock
New York
-$24.5M
5
Vanguard Group
Vanguard Group
Pennsylvania
-$23.8M
Name Holding Trade Value Shares
Change 		Change in
Stake
XT
126
XTX Topco
Cayman Islands
$1.18M -$376K -15,458 -24%
Tudor Investment Corp
127
Tudor Investment Corp
Connecticut
$1.18M +$1.2M +49,133 New
Blackstone Inc
128
Blackstone Inc
New York
$1.18M +$1.2M +49,106 New
PCMK
129
Paragon Capital Management (Kansas)
Kansas
$1.15M -$15.6K -640 -1%
AB
130
Amalgamated Bank
New York
$1.14M +$42K +1,726 +4%
ASRS
131
Arizona State Retirement System
Arizona
$1.12M +$15.8K +648 +1%
Holocene Advisors
132
Holocene Advisors
New York
$1.1M +$1.12M +45,814 New
HTI
133
Hikari Tsushin Inc
Japan
$1.09M – – –
YCM
134
Yousif Capital Management
Michigan
$1.04M -$325K -13,369 -23%
Wells Fargo
135
Wells Fargo
California
$1.04M +$78.6K +3,228 +8%
VI
136
Versor Investments
New York
$1.03M -$465K -19,111 -31%
TRSOTSOK
137
Teachers Retirement System of the State of Kentucky
Kentucky
$1.01M -$218K -8,948 -17%
CM
138
Caption Management
Oklahoma
$984K +$1M +41,100 New
Mariner
139
Mariner
Kansas
$973K -$57.1K -2,347 -5%
CHAM
140
Clear Harbor Asset Management
Connecticut
$958K -$1.22K -50 -0.1%
KA
141
Kerrisdale Advisers
Florida
$947K +$962K +39,520 New
Corient Private Wealth
142
Corient Private Wealth
Florida
$935K -$227K -9,333 -19%
COPPSERS
143
Commonwealth of Pennsylvania Public School Employees Retirement System
Pennsylvania
$935K +$7.5K +308 +0.8%
First Trust Advisors
144
First Trust Advisors
Illinois
$924K +$940K +38,590 New
EC
145
EntryPoint Capital
New York
$915K +$709K +29,108 +320%
Universal-Beteiligungs- und Servicegesellschaft
146
Universal-Beteiligungs- und Servicegesellschaft
Germany
$905K -$1.12M -45,973 -55%
TBA
147
Tower Bridge Advisors
Pennsylvania
$891K +$27.9K +1,146 +3%
WJWM
148
Williams Jones Wealth Management
New York
$879K -$267K -10,951 -23%
Creative Planning
149
Creative Planning
Kansas
$865K +$44.1K +1,812 +5%
Balyasny Asset Management
150
Balyasny Asset Management
Illinois
$862K +$877K +36,010 New
4 5
6
7 8

AMTM Hedge Fund Activity: Q3 2025 in Review

462 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Amentum Holdings (AMTM) for Q3 2025, worth a combined $4.63B — down 2.1% from $4.73B a quarter earlier.

Buyers outnumbered sellers: 76 funds opened new AMTM positions and 69 closed out — a net gain of 7 holders — while 104 added to existing stakes and 179 trimmed.

The largest buyer was Invesco, adding an estimated $61.8M. The largest seller was Millennium Management, cutting an estimated $98M.

  • 462 institutional investors held Amentum Holdings (AMTM) as of Q3 2025, up from 460 in Q2 2025.
  • Funds reported $4.63B of Amentum Holdings stock for Q3 2025, down 2.1% quarter-over-quarter.
  • 76 funds opened new Amentum Holdings positions in Q3 2025 and 69 closed out, a net change of +7 holders.
  • The largest Amentum Holdings buyer in Q3 2025 was Invesco, an estimated $61.8M added.
  • The largest Amentum Holdings seller in Q3 2025 was Millennium Management, an estimated $98M sold.

Based on aggregated 13F filings for Q3 2025.