Position in AMTM
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$22,737,000
+$2,525,000 QoQ
Shares Held
1,100,000
+41.9% QoQ
Ownership
0.450%
of shares outstanding
% of Portfolio
2.19%
of 13F equity value
Holder Rank
#29
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)
Derivatives in AMTM
reported options exposure · as of Mar 31, 2025CallValue
$1,820,000
CallShares
100,000
PutValue
$0
PutShares
0
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Specialty Business Services
Industrials · as of Jun 30, 2026683 Capital Management, LLC holds $22,737,000 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
|
1,100,000 | $22,737,000 |
All Filings in AMTM
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8 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $22,737,000 | 1,100,000 | Shares | Defined | 2026-08-14 | |
| 2026-03-31 | $20,212,000 | 775,000 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $24,215,000 | 835,000 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $30,536,250 | 1,275,000 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $38,484,300 | 1,630,000 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $1,820,000 | 100,000 | Call | Defined | 2025-05-15 | |
| 2025-03-31 | $18,436,600 | 1,013,000 | Shares | Defined | 2025-05-15 | |
| 2024-12-31 | $8,937,750 | 425,000 | Shares | Defined | 2025-02-14 | |
| No filing history on record for this holder in this stock. | ||||||