AMTM

Amentum Holdings INC

-$328.0M

Net Activity

Institutions Holding

486

Popularity Rank

#1145

Avg Weight

0.26%

Total Value

$5.4B

Ownership Trend

486 institutions currently hold AMTM, with 214 net buyers and 214 net sellers this quarter.

Institutional Moves

Institutional Moves (Q1 2026)

Neutral

Based on recent trading activity

Net Selling Institutions

214

Net Buying Institutions

214

Key Holders

Key Holders

Top 5 by Value

AS
American Securities LLC
$1.2B
IL
Invesco Ltd.
$560.0M
BI
BlackRock, Inc.
$465.3M
PM
Primecap Management Co/ca/
$315.2M
VP
Vanguard Portfolio Management LLC
$204.8M

Top 5 by Conviction

AS
American Securities LLC
29.88%
SC
Segra Capital Management, LLC
19.06%
BC
Brightline Capital Management, LLC
10.77%
AC
Arvin Capital Management LP
8.97%
PI
Permian Investment Partners, LP
4.52%
View all 486 holding institutions

Quarterly Activity

Recent Activity

+$2.1B

Total Buy Value

$2.3B

Total Sell Value

New buy61
Trim152
Add153
Sold out62

214

Net Buyers

214

Net Sellers

Insider Trading (Form 4)

Form 144 Pre-Sale Notices

No Form 144 planned sale filings in the last 90 days

Beneficial Ownership (13D/13G)

No Schedule 13D/13G filings for this ticker

Material Events (8-K)

No Form 8-K filings for this ticker

FAQ

Who are the top institutional investors holding AMENTUM HOLDINGS INC (AMTM)?
Major stakeholders currently include American Securities LLC ($1.2B), Invesco Ltd. ($560.0M), BlackRock, Inc. ($465.3M). Based on the latest 13F filings, there are a total of 486 tracked investment funds and institutions maintaining positions in AMTM.
What is the overall institutional sentiment toward AMTM recently?
Institutional sentiment appears Bearish (Net Selling). During the most recent reporting quarter, the stock experienced a net outflow of $328.0M, driven by 214 managers accumulating shares while 214 reduced their exposure.
Which institutions have been selling or reducing their AMTM positions?
In the latest period, 152 funds trimmed their holdings, and 62 managers completely exited their positions. The aggregate reported sell value was $2.3B.
Are there any notable investors adding AMTM to their portfolios?
Yes, buying activity remains notable. 61 institutions opened new positions in {ticker}, and 153 existing holders added to their shares. The total reported buy value for the quarter amounted to $2.1B.

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