InvestorLens

AMTM — AMENTUM HOLDINGS INC

Public company

Sign in to save5 tracked investors reported this
For educational research only.InvestorLens analyzes public regulatory filings (SEC EDGAR, STOCK Act PTRs) that may be delayed by 45 days or more. Information shown is historical and is not financial, legal, or tax advice, nor a recommendation or solicitation to buy or sell any security. Always do your own research.

InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.

Sourced from SEC EDGAR public filings

Why are billionaires buying AMTM?

Built from public SEC filings and public economic data. Not a recommendation.

Confidence
67
Institutional Conviction
Mixed · 4 buying vs 2 selling last quarter
47
Macro Tailwind
Macro conditions are mixed for this sector
56
Why? — Evidence & Confidence ▾

Of 6 tracked investors who changed their AMTM position last quarter, 4 bought and 2 sold (67% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 56/100 in a Overheat regime).

Supporting evidence
  • +4 tracked investors added or increased positions last quarter (Izzy Englander, George Soros, Ken Griffin, …)
  • +5 tracked investors reported holding AMTM at their latest filing
  • +Macro Health is 56/100 in a Overheat regime — historically acceptable for this sectorsource
Contradicting evidence — always shown
  • −2 tracked investors reduced or exited last quarter (1 reduced, 1 sold out)
  • −13F data is disclosed up to 45 days after quarter end — positions may have changed since
Know the limits
  • · 13F disclosure lag (up to 45 days)
  • · Tracked investors are a sample, not the whole market
  • · Sector regime fit is a historical average, not a guarantee

Every InvestorLens score shows its evidence — including what argues against it. Model conviction-v1 · generated 9/18/2026.

About AMENTUM HOLDINGS INC (AMTM)

AMENTUM HOLDINGS INC (AMTM) appears in the most recent 13F filings of 5 tracked institutional investors. The largest disclosed position is held by Izzy Englander (Millennium Management), valued at $110M. Across recent filings, tracked investors recorded 10 new positions, 14 increased, 7 reduced, and 5 exited. All data sourced from SEC 13F filings.

Smart Money Consensus™

Based on recent institutional activity in AMTM

67
/100
Institutional Accumulation
Added / Increased24
Reduced7
Exited5
BearishBullish
Crowded Trade Score™

How many top investors track AMTM

33
/100
Emerging Interest
5investors

A small number of top investors own this.

UndiscoveredCrowded
151015+

AMTM Ownership Composition

How AMENTUM HOLDINGS INC is held across tracked investor types, based on reported 13F positions.

Dominant Type
Multi-Strategy / Quant
96% of tracked value
Institutions
5
tracked investors
Total Reported
$81M
combined 13F value
Types2
  • Multi-Strategy / Quant95.8%
  • Macro4.2%
Multi-Strategy / Quant(3)
95.8%
Macro(2)
4.2%

Tracked investors currently reporting AMTM

1 tracked investor has since exited this position — listed separately below.

  • Izzy EnglanderJun 30, 2026
    Millennium Management
    Shares
    2.1M
    Value
    $44M
    % Portfolio
    0.02%
  • Ken GriffinJun 30, 2026
    Citadel Advisors
    Shares
    974.3K
    Value
    $20.1M
    % Portfolio
    0.00%
  • Steve CohenJun 30, 2026
    Point72 Asset Management
    Shares
    650K
    Value
    $13.4M
    % Portfolio
    0.01%
  • George SorosJun 30, 2026
    Soros Fund Management
    Shares
    118.3K
    Value
    $2.4M
    % Portfolio
    0.03%
  • Ray DalioJun 30, 2026
    Bridgewater Associates
    Shares
    47.2K
    Value
    $976.1K
    % Portfolio
    0.00%

Previously held AMTM

These investors reported AMTM in an earlier quarter but not in their most recent 13F. Figures below are their last reported position, not a current holding.

InvestorFirmLast reported sharesValue thenLast held
Paul Tudor JonesTudor Investment Corp11.8K$307.7KMar 31, 2026

Recent activity

Frequently asked questions

How many institutional investors hold AMTM?
5 tracked institutional investors disclosed a position in AMTM (AMENTUM HOLDINGS INC) in their most recent 13F filing.
Who is the largest institutional holder of AMTM?
Izzy Englander, Millennium Management, holds the largest disclosed position in AMTM, valued at $110M.
Did institutional ownership of AMTM increase or decrease?
Across recent 13F filings, tracked investors recorded 10 new positions, 14 increased, 7 reduced, and 5 fully exited AMTM.
Where does this AMTM ownership data come from?
SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.
AMTM (AMENTUM HOLDINGS INC) — Institutional Holders & 13F — InvestorLens