AMTM

Amentum Holdings, Inc.

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
6.07%
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
Name Holding Trade Value Shares
Change
Shares
Change %
CCPM
451
Cooper Creek Partners Management
New York
-$22.3M -1,223,986 Closed
GCM
452
Ghisallo Capital Management
Massachusetts
-$11.6M -635,569 Closed
Jane Street
453
Jane Street
New York
-$11M -601,760 Closed
DKCM
454
Davidson Kempner Capital Management
New York
-$8.19M -450,000 Closed
MIM
455
Monashee Investment Management
Massachusetts
-$6.55M -360,000 Closed
CP
456
Castalian Partners
Minnesota
-$5.54M -304,500 Closed
TC
457
TwinBeech Capital
New York
-$4.1M -225,438 Closed
ECM
458
Eisler Capital Management
United Kingdom
-$2.31M -126,889 Closed
SGM
459
Seven Grand Managers
New York
-$1.82M -100,000 Closed
Walleye Trading
460
Walleye Trading
New York
-$1.25M -68,470 Closed
CM
461
Caption Management
Oklahoma
-$1.24M -68,400 Closed
CC
462
Centiva Capital
New York
-$1.19M -65,258 Closed
WHCM
463
Wolf Hill Capital Management
Connecticut
-$1.16M -63,857 Closed
WAM
464
Weiss Asset Management
Massachusetts
-$1.11M -60,953 Closed
EGM
465
Engineers Gate Manager
New York
-$980K -53,830 Closed
Simplex Trading
466
Simplex Trading
Illinois
-$961K -52,827 Closed
FCH
467
Freestone Capital Holdings
Washington
-$728K -40,027 Closed
Allianz Asset Management
468
Allianz Asset Management
Germany
-$704K -38,700 Closed
SB
469
SIG Brokerage
New York
-$638K -35,052 Closed
Wolverine Trading
470
Wolverine Trading
Illinois
-$593K -32,816 Closed
ADEF
471
ABS Direct Equity Fund
Connecticut
-$592K -32,500 Closed
Renaissance Technologies
472
Renaissance Technologies
New York
-$571K -31,400 Closed
GCP
473
GSA Capital Partners
United Kingdom
-$555K -30,488 Closed
QT
474
Quantbot Technologies
New York
-$516K -28,362 Closed
CC
475
Carlson Capital
Texas
-$510K -28,000 Closed