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 %
SNBOSCI
201
Security National Bank of Sioux City Iowa
Iowa
$311K +$32.8K +1,800 +12%
HighTower Advisors
202
HighTower Advisors
Illinois
$304K +$2.69K +148 +0.9%
PA
203
Paralel Advisors
Colorado
$297K – – –
Neuberger Berman Group
204
Neuberger Berman Group
New York
$294K -$94.1K -5,168 -24%
First Manhattan
205
First Manhattan
New York
$291K -$29K -1,593 -9%
IVP
206
Intrinsic Value Partners
Arizona
$289K -$19.7K -1,085 -6%
PNC Financial Services Group
207
PNC Financial Services Group
Pennsylvania
$283K -$258K -14,186 -48%
Cambridge Investment Research Advisors
208
Cambridge Investment Research Advisors
Iowa
$276K -$35.4K -1,949 -11%
FBT
209
First Bank & Trust
South Dakota
$261K +$72.5K +3,985 +38%
Walleye Capital
210
Walleye Capital
New York
$256K +$256K +14,069 New
CWM
211
Cahaba Wealth Management
Georgia
$248K – – –
Stifel Financial
212
Stifel Financial
Missouri
$241K -$613K -33,696 -72%
CIBC Asset Management
213
CIBC Asset Management
Ontario, Canada
$239K +$16.7K +917 +7%
SSG
214
Summit Securities Group
New York
$238K +$238K +13,062 New
SRC
215
Shufro Rose & Co
New York
$237K -$11.1K -610 -4%
Public Employees Retirement Association of Colorado
216
Public Employees Retirement Association of Colorado
Colorado
$232K – – –
RC
217
Rangeley Capital
Connecticut
$228K -$628K -34,500 -73%
EW
218
Evoke Wealth
California
$223K +$2.99K +164 +1%
OGC
219
One68 Global Capital
New York
$218K +$218K +12,000 New
BFPW
220
BOK Financial Private Wealth
Colorado
$213K +$16.5K +905 +8%
QCG
221
Quadrant Capital Group
Ohio
$212K +$210K +11,545 +9,310%
Brown Advisory
222
Brown Advisory
Maryland
$212K -$36.9K -2,025 -15%
LIM
223
Leavell Investment Management
Alabama
$211K +$211K +11,614 New
LD
224
Lipe & Dalton
New York
$207K – – –
PCM
225
Prelude Capital Management
New York
$207K +$207K +11,360 New
7 8
9
10 11