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
1
Millennium Management
New York
$110M
2
Invesco
2
Invesco
Georgia
$462M
3
Primecap Management
3
Primecap Management
California
$284M
4
FCM
4
Frontier Capital Management
Massachusetts
$129M
5
Mirae Asset Global ETFs Holdings
5
Mirae Asset Global ETFs Holdings
Hong Kong
$32.6M

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 Holding Trade Value Shares
Change 		Shares
Change %
Public Employees Retirement Association of Colorado
201
Public Employees Retirement Association of Colorado
Colorado
$319K +$17.9K +757 +6%
CB
202
Commerce Bank
Missouri
$316K +$316K +13,381 New
WorldQuant Millennium Advisors
203
WorldQuant Millennium Advisors
New York
$315K +$315K +13,358 New
QCG
204
Quadrant Capital Group
Ohio
$308K +$32.8K +1,389 +12%
BPWM
205
Badgley Phelps Wealth Managers
Washington
$304K +$304K +12,874 New
OAM
206
Oppenheimer Asset Management
New York
$302K +$302K +12,783 New
SWA
207
SFMG Wealth Advisors
Texas
$275K +$15.8K +668 +6%
WWM
208
Whalen Wealth Management
Nevada
$274K +$274K +11,616 New
PI
209
PFG Investments
New York
$266K +$266K +11,283 New
UCFA
210
United Capital Financial Advisors
Texas
$265K +$265K +11,228 New
ECM
211
Evergreen Capital Management
Washington
$264K +$264K +11,196 New
LD
212
Lipe & Dalton
New York
$264K -$4.05K -172 -2%
SCM
213
Sterling Capital Management
North Carolina
$260K +$65.1K +2,758 +33%
SAM
214
Silvercrest Asset Management
New York
$252K +$15.4K +653 +7%
Brown Advisory
215
Brown Advisory
Maryland
$250K -$25K -1,057 -9%
MFIM
216
Mesirow Financial Investment Management
Illinois
$248K +$248K +10,515 New
WTA
217
Washington Trust Advisors
Massachusetts
$245K -$1.03M -43,467 -81%
TFA
218
Toth Financial Advisory
Virginia
$245K +$55.1K +2,334 +29%
DC
219
Diametric Capital
Massachusetts
$244K +$244K +10,343 New
Lido Advisors
220
Lido Advisors
California
$243K -$2.62K -111 -1%
AF
221
Allworth Financial
California
$242K +$47K +1,990 +24%
M&T Bank
222
M&T Bank
New York
$241K +$241K +10,219 New
EHC
223
Everett Harris & Co
California
$238K -$503K -21,325 -68%
Janney Montgomery Scott
224
Janney Montgomery Scott
Pennsylvania
$236K -$560K -23,753 -70%
LAM
225
Lingohr Asset Management
Germany
$236K +$236K +10,000 New
7 8
9
10 11