AMTM

Amentum Holdings, Inc.
AMTM

Overview Fund Activity

451 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, 97 reducing their positions, and 65 closing their positions.

Holders
451
Holders Change
+38
Holders Change %
+9.2%
% of All Funds
6.06%
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
97
Closed
65
Calls
$44.4M
Puts
$22.2M
Net Calls
+$22.2M
Net Calls Change
+$1.62M

Top Buyers

1
Millennium Management
1
Millennium Management
New York
$110M
2
Invesco
2
Invesco
Georgia
$462M
3
Norges Bank
3
Norges Bank
Norway
$51M
4
Primecap Management
4
Primecap Management
California
$284M
5
FCM
5
Frontier Capital Management
Massachusetts
$129M

Top Sellers

1
Citadel Advisors
1
Citadel Advisors
Florida
$8.1M
2
Balyasny Asset Management
2
Balyasny Asset Management
Illinois
$0
3
CCPM
3
Cooper Creek Partners Management
New York
$0
4
VC
4
Voss Capital
Texas
$33.1M
5
UBS Group
5
UBS Group
Switzerland
$18.1M
Name Market Value Shares Shares
Change 		Shares
Change %
AWM
501
Ameliora Wealth Management
Switzerland
– – -223 Closed
CA
502
Continuum Advisory
Idaho
– – -180 Closed
RMP
503
Richards, Merrill & Peterson
Washington
– – -170 Closed
CB
504
Community Bank
New York
– – -150 Closed
SIM
505
Studio Investment Management
Illinois
– – -144 Closed
CTWM
506
Cherry Tree Wealth Management
Minnesota
– – -75 Closed
MFC
507
Mechanics Financial Corp
Ohio
– – -64 Closed
SIM
508
Synergy Investment Management
Florida
– – -49 Closed
RPA
509
Redwood Park Advisors
California
– – -14 Closed
GP
510
Greenline Partners
New York
– – -7 Closed
CWC
511
Carolinas Wealth Consulting
North Carolina
– – -5 Closed
WW
512
Winnow Wealth
Texas
– – -4 Closed
Capital Fund Management (CFM)
513
Capital Fund Management (CFM)
France
– – – –
Squarepoint
514
Squarepoint
New York
– – – –
PMAM
515
Picton Mahoney Asset Management
Ontario, Canada
$0 8 – –
PEAK6
516
PEAK6
Illinois
– – – –
CAL
517
Capital Advisors Ltd
Ohio
$0 9 +9 New
Lazard Asset Management
518
Lazard Asset Management
New York
$0 13 +13 New
HDIM
519
Hanson & Doremus Investment Management
Vermont
$0 18 +18 New
OL
520
OneFund LLC
Florida
$0 20 +20 New
17 18 19 20
21