AMTM

Amentum Holdings

482 hedge funds and large institutions have $5.27B invested in Amentum Holdings in 2026 Q1 according to their latest regulatory filings, with 71 funds opening new positions, 148 increasing their positions, 152 reducing their positions, and 59 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more first-time investments, than exits

New positions opened: | Existing positions closed:

more ownership

Funds ownership:

more funds holding

Funds holding:

3% less repeat investments, than reductions

Existing positions increased: 148 | Existing positions reduced: 152

6% less capital invested

Capital invested by funds: $5.64B → $5.27B (-$364M)

10% less funds holding in top 10

Funds holding in top 10: 109 (-1)

Holders
482
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
9
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$134M
Puts
$43M
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
CM
201
Caption Management
Oklahoma
$567K
DA
202
Dover Advisors
Virginia
$552K
MCM
203
Massar Capital Management
Connecticut
$549K
AC
204
Aristeia Capital
Connecticut
$537K
Neuberger Berman Group
205
Neuberger Berman Group
New York
$536K
LIM
206
Lathrop Investment Management
Arkansas
$523K
Bank of Montreal
207
Bank of Montreal
Ontario, Canada
$521K
Deutsche Bank
208
Deutsche Bank
Germany
$518K
MWM
209
Moran Wealth Management
Florida
$511K
AC
210
Allstate Corporation
Illinois
$508K
CSIC
211
Clifford Swan Investment Counsel
California
$501K
Cambridge Investment Research Advisors
212
Cambridge Investment Research Advisors
Iowa
$501K
GFP
213
Gryphon Financial Partners
Ohio
$492K
HighTower Advisors
214
HighTower Advisors
Illinois
$485K
CIBC Asset Management
215
CIBC Asset Management
Ontario, Canada
$481K
MWM
216
Modera Wealth Management
New Jersey
$480K
Balyasny Asset Management
217
Balyasny Asset Management
Illinois
$478K
GC
218
Guidance Capital
Kentucky
$474K
EC
219
EntryPoint Capital
New York
$469K
SNBOSCI
220
Security National Bank of Sioux City Iowa
Iowa
$463K
AG
221
ASO Group
$462K
MOACM
222
Mutual of America Capital Management
New York
$459K
Commonwealth Equity Services
223
Commonwealth Equity Services
Massachusetts
$456K
BA
224
Bridgewater Associates
Connecticut
$445K
AIM
225
Aigen Investment Management
New York
$441K