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 %
GIM
251
Glenmede Investment Management
Pennsylvania
$102K +$102K +4,325 New
MCM
252
MAI Capital Management
Ohio
$101K +$11K +468 +12%
PA
253
Parallel Advisors
California
$98.7K +$65.3K +2,764 +195%
UB
254
UMB Bank
Missouri
$97.3K +$10.2K +430 +12%
WT
255
Whittier Trust
California
$94.4K -$6.35K -269 -6%
Korea Investment Corp
256
Korea Investment Corp
South Korea
$94.1K +$94.1K +3,986 New
SO
257
STRS Ohio
Ohio
$89.8K +$89.8K +3,805 New
ETC
258
Exchange Traded Concepts
Oklahoma
$78.7K +$78.7K +3,332 New
CIBC Private Wealth Group
259
CIBC Private Wealth Group
Georgia
$76.5K -$32.2K -1,364 -30%
FFA
260
Farther Finance Advisors
California
$67.2K -$2.5K -106 -4%
SOW
261
State of Wyoming
Wyoming
$65.1K +$65.1K +2,758 New
FIA
262
FNY Investment Advisers
New York
$56K – – –
Fifth Third Bancorp
263
Fifth Third Bancorp
Ohio
$54.9K +$3.05K +129 +6%
S
264
SignatureFD
Georgia
$52.9K +$11.3K +477 +27%
FDCDDQ
265
Federation des caisses Desjardins du Quebec
Quebec, Canada
$51.4K +$9.02K +382 +21%
LWCFA
266
Loring Wolcott & Coolidge Fiduciary Advisors
Massachusetts
$51.3K +$2.93K +124 +6%
PMFA
267
Plante Moran Financial Advisors
Michigan
$47K +$2.69K +114 +6%
CTC
268
Central Trust Company
Missouri
$46.1K +$3.07K +130 +7%
RAM
269
Riggs Asset Management
Pennsylvania
$45.6K +$45.6K +1,931 New
SAM
270
Smartleaf Asset Management
Massachusetts
$42.6K +$34.6K +1,474 +434%
API
271
Asset Planning Inc
California
$42.3K +$2.43K +103 +6%
National Bank of Canada
272
National Bank of Canada
Quebec, Canada
$41.8K +$12.5K +528 +43%
OIAM
273
OFI Invest Asset Management
France
$41.3K +$41.3K +2,051 New
EWA
274
EverSource Wealth Advisors
Alabama
$35.9K -$50.7K -2,146 -59%
CIAM
275
Caitong International Asset Management
Hong Kong
$35.9K +$33.7K +1,426 +1,517%
9 10
11
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