AMERICAN SECURITIES LLC
Broker-DealerPosition in AMTM — Amentum Holdings, Inc.
CIK 1475483
NEW YORK, NY
Position in AMTM
as of Jun 30, 2026
· filed Aug 26, 2026
Position Value
$930,702,777
-$243,594,680 QoQ
Shares Held
45,026,743
0.0% QoQ
Ownership
18.4%
of shares outstanding
% of Portfolio
24.79%
of 13F equity value
Holder Rank
#1
of 462 holders
Holding Since
Dec 2024
7 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in AMTM Over Time
Shares Held
Position Value (USD)
Position in Specialty Business Services
Industrials · as of Jun 30, 2026AMERICAN SECURITIES LLC holds $930,702,777 across 1 Specialty Business Services name. AMTM ranks #1 (100.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | AMTM |
Amentum Holdings, Inc.
This page
|
45,026,743 | $930,702,777 |
All Filings in AMTM
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7 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $930,702,777 | 45,026,743 | Shares | Sole | 2026-08-26 | |
| 2026-03-31 | $1,174,297,457 | 45,026,743 | Shares | Sole | 2026-05-14 | |
| 2025-12-31 | $1,305,775,547 | 45,026,743 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $1,078,390,494 | 45,026,743 | Shares | Sole | 2025-11-07 | |
| 2025-06-30 | $1,063,081,402 | 45,026,743 | Shares | Sole | 2025-07-29 | |
| 2025-03-31 | $798,869,052 | 43,893,904 | Shares | Sole | 2025-05-12 | |
| 2024-12-31 | $923,088,801 | 43,893,904 | Shares | Sole | 2025-02-14 | |
| No filing history on record for this holder in this stock. | ||||||