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AMTM

Amentum Holdings
AMTM

462 hedge funds and large institutions have $4.63B invested in Amentum Holdings in 2025 Q3 according to their latest regulatory filings, with 76 funds opening new positions, 104 increasing their positions, 179 reducing their positions, and 69 closing their positions.

New
Increased
Maintained
Reduced
Closed

49% more call options, than puts

Call options by funds: $22.9M | Put options by funds: $15.4M

10% more first-time investments, than exits

New positions opened: 76 | Existing positions closed: 69

0% more funds holding

Funds holding: 460 → 462 (+2)

0% more funds holding in top 10

Funds holding in top 10: 9 → 9 (0)

2% less capital invested

Capital invested by funds: $4.73B → $4.63B (-$98.4M)

2.85% less ownership

Funds ownership: 82.34% → 79.49% (-2.8%)

42% less repeat investments, than reductions

Existing positions increased: 104 | Existing positions reduced: 179

Holders
462
Holders Change
+2
Holders Change %
+0.43%
% of All Funds
6.06%
Holding in Top 10
9
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.12%
New
76
Increased
104
Reduced
179
Closed
69
Calls
$22.9M
Puts
$15.4M
Net Calls
+$7.56M
Net Calls Change
-$17.7M

Top Buyers

1
Invesco
Invesco
Georgia
+$61.8M
2
Fidelity Investments
Fidelity Investments
Massachusetts
+$40.4M
3
Verition Fund Management
Verition Fund Management
Connecticut
+$25.4M
4
Point72 Asset Management
Point72 Asset Management
Connecticut
+$25.1M
5
Mirae Asset Global ETFs Holdings
Mirae Asset Global ETFs Holdings
Hong Kong
+$17.1M

Top Sellers

1
Millennium Management
Millennium Management
New York
-$98M
2
VanEck Associates
VanEck Associates
New York
-$56.1M
3
DCM
Discovery Capital Management
Connecticut
-$28.2M
4
BlackRock
BlackRock
New York
-$24.5M
5
Vanguard Group
Vanguard Group
Pennsylvania
-$23.8M
Name Holding Trade Value Shares
Change 		Change in
Stake
CIAM
501
Caitong International Asset Management
Hong Kong
– -$35.9K -1,520 Closed
SAM
502
Shell Asset Management
Netherlands
– -$24K -1,011 Closed
National Pension Service
503
National Pension Service
South Korea
– -$23.5K -995 Closed
BF
504
BOK Financial
Oklahoma
– -$18.3K -776 Closed
BOTPPF
505
Board of the Pension Protection Fund
United Kingdom
– -$17.2K -730 Closed
RA
506
Ransom Advisory
Rhode Island
– -$12.4K -524 Closed
TPWA
507
Twin Peaks Wealth Advisors
California
– -$12.3K -478 Closed
BCMLT
508
Beacon Capital Management LLC (Tennessee)
Tennessee
– -$10.6K -449 Closed
GWP
509
Gen-Wealth Partners
Michigan
– -$6.4K -271 Closed
UBP
510
Union Bancaire Privee
Switzerland
– -$5.55K -266 Closed
NS
511
NBC Securities
Alabama
– -$3K -161 Closed
SPF
512
South Plains Financial
Texas
– -$3.2K -136 Closed
Mirae Asset Global Investments
513
Mirae Asset Global Investments
South Korea
– -$3.02K -128 Closed
MTIC
514
Missouri Trust & Investment Company
Missouri
– -$1.86K -79 Closed
WTFG
515
Wood Tarver Financial Group
Idaho
– -$1K -79 Closed
MA
516
Montag & Associates
Georgia
– -$1.3K -55 Closed
1IA
517
1620 Investment Advisors
Massachusetts
– -$614 -26 Closed
NC
518
NewSquare Capital
Pennsylvania
– -$543 -23 Closed
SIM
519
Sentry Investment Management
Wisconsin
– -$1K -22 Closed
WA
520
Whipplewood Advisors
Colorado
– -$496 -21 Closed
OCM
521
Orion Capital Management
California
– -$472 -20 Closed
NMG
522
New Millennium Group
Utah
– -$449 -19 Closed
CA
523
Crewe Advisors
Utah
– -$71 -3 Closed
MCA
524
Maryland Capital Advisors
Maryland
– -$71 -3 Closed
Pacer Advisors
525
Pacer Advisors
Pennsylvania
– -$20 -1 Closed
18 19 20
21
22

AMTM Hedge Fund Activity: Q3 2025 in Review

462 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Amentum Holdings (AMTM) for Q3 2025, worth a combined $4.63B — down 2.1% from $4.73B a quarter earlier.

Buyers outnumbered sellers: 76 funds opened new AMTM positions and 69 closed out — a net gain of 7 holders — while 104 added to existing stakes and 179 trimmed.

The largest buyer was Invesco, adding an estimated $61.8M. The largest seller was Millennium Management, cutting an estimated $98M.

  • 462 institutional investors held Amentum Holdings (AMTM) as of Q3 2025, up from 460 in Q2 2025.
  • Funds reported $4.63B of Amentum Holdings stock for Q3 2025, down 2.1% quarter-over-quarter.
  • 76 funds opened new Amentum Holdings positions in Q3 2025 and 69 closed out, a net change of +7 holders.
  • The largest Amentum Holdings buyer in Q3 2025 was Invesco, an estimated $61.8M added.
  • The largest Amentum Holdings seller in Q3 2025 was Millennium Management, an estimated $98M sold.

Based on aggregated 13F filings for Q3 2025.