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.

New
Increased
Maintained
Reduced
Closed
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
Primecap Management
California
$183M
2
FCM
Frontier Capital Management
Massachusetts
$65.1M
3
Invesco
Invesco
Georgia
$313M
4
Citadel Advisors
Citadel Advisors
Florida
$53.3M
5
DCM
Discovery Capital Management
Connecticut
$47.9M

Top Sellers

1
CCPM
Cooper Creek Partners Management
New York
$22.3M
2
Allspring Global Investments
Allspring Global Investments
North Carolina
$0
3
Wellington Management Group
Wellington Management Group
Massachusetts
$0
4
Mirae Asset Global ETFs Holdings
Mirae Asset Global ETFs Holdings
Hong Kong
$0
5
CP
Castalian Partners
Minnesota
$5.54M
Name Holding Trade Value Shares
Change 		Shares
Change %
OP
351
ORG Partners
Indiana
$2.32K +$2.32K +130 New
USB
352
Union Savings Bank
Connecticut
$2.27K – – –
RF
353
Roxbury Financial
New Jersey
$2.2K – – –
BLC
354
Brown, Lisle/Cummings
Rhode Island
$2K – – –
HWM
355
Hemington Wealth Management
Virginia
$2K -$15 -1 -0.8%
KA
356
Kozak & Associates
Colorado
$1.83K – – –
RAM
357
Ramirez Asset Management
New York
$1.82K -$10.9K -600 -86%
HIA
358
Harbor Investment Advisory
Maryland
$1.82K – – –
GGI
359
Godsey & Gibb Inc
Virginia
$1.82K – – –
MHR
360
Matthew Hamilton Rosenberg
$1.71K – – –
CIAM
361
Caitong International Asset Management
Hong Kong
$1.71K +$491 +27 +40%
GBT
362
Grove Bank & Trust
Florida
$1.62K +$1.38K +76 +585%
ADL
363
Asset Dedication LLC
California
$1.46K – – –
FFC
364
First Financial Corp
Indiana
$1.44K – – –
MTIC
365
Missouri Trust & Investment Company
Missouri
$1.37K -$819 -45 -38%
CTWM
366
Cherry Tree Wealth Management
Minnesota
$1.37K – – –
WTFG
367
Wood Tarver Financial Group
Idaho
$1.37K – – –
RIL
368
Rothschild Investment LLC
Illinois
$1.37K – – –
MDA
369
Minot DeBlois Advisors
Massachusetts
$1.37K – – –
RS
370
Rakuten Securities
Japan
$1.27K +$1.27K +70 New
VCM
371
Versant Capital Management
Arizona
$1.2K -$491 -27 -29%
MFC
372
Mechanics Financial Corp
Ohio
$1.17K -$16.5K -908 -93%
HFS
373
Hughes Financial Services
Virginia
$1.16K +$1.16K +65 New
HNW
374
High Note Wealth
Minnesota
$1.09K – – –
BF
375
BOK Financial
Oklahoma
$1.02K -$236K -12,976 -100%
13 14
15
16 17