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AMTM

Amentum Holdings

486 hedge funds and large institutions have $5.28B invested in Amentum Holdings in 2026 Q1 according to their latest regulatory filings, with 71 funds opening new positions, 150 increasing their positions, 152 reducing their positions, and 60 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:

1% less repeat investments, than reductions

Existing positions increased: 150 | Existing positions reduced: 152

6% less capital invested

Capital invested by funds: $5.64B → $5.28B (-$362M)

10% less funds holding in top 10

Funds holding in top 10: 109 (-1)

Holders
486
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
A
501
AlphaQuest
New York
MF
502
Magnetar Financial
Illinois
QCM
503
Qsemble Capital Management
New York
CC
504
Carlson Capital
Texas
Wellington Management Group
505
Wellington Management Group
Massachusetts
OAM
506
Oxford Asset Management
United Kingdom
IPW
507
Impact Partnership Wealth
Georgia
PA
508
Profund Advisors
Maryland
SF
509
Summit Financial
New Jersey
LCM
510
LuminArx Capital Management
New York
PCM
511
Penserra Capital Management
California
YIH
512
Y-Intercept (HK)
Hong Kong
Grantham, Mayo, Van Otterloo & Co (GMO)
513
Grantham, Mayo, Van Otterloo & Co (GMO)
Massachusetts
AIP
514
ARS Investment Partners
New York
SI
515
Symmetry Investments
Jersey
GC
516
Guggenheim Capital
Illinois
CFP
517
Comprehensive Financial Planning
Pennsylvania
CIA
518
Concurrent Investment Advisors
Florida
KeyBank National Association
519
KeyBank National Association
Ohio
SRC
520
Sage Rhino Capital
California
UCFA
521
United Capital Financial Advisors
Texas
KAS
522
Kestra Advisory Services
Texas
VWWMG
523
Vermillion & White Wealth Management Group
Pennsylvania
FHA
524
Flagship Harbor Advisors
Massachusetts
MFG
525
Mendota Financial Group
Wisconsin