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CITADEL ADVISORS LLC

Position in AMTM — Amentum Holdings, Inc.

CIK 1423053 MIAMI, FL

Position in AMTM

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$2,103,039
+$491,074 QoQ
Shares Held
80,638
+45.1% QoQ
Ownership
0.033%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Sep 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, 2026
CallValue
$6,363,520
CallShares
244,000
PutValue
$4,751,776
PutShares
182,200

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 Mar 31, 2026

CITADEL ADVISORS LLC holds $845,339,874 across 26 Specialty Business Services names. AMTM ranks #20 (0.2% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in AMTM

Export CSV
19 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $4,751,776 182,200
2026-03-31 $6,363,520 244,000
2026-03-31 $2,103,039 80,638
2025-12-31 $1,611,965 55,585
2025-12-31 $9,184,996 316,724
2025-12-31 $5,196,162 179,178
2025-09-30 $2,825,381 117,970
2025-09-30 $4,776,875 199,452
2025-09-30 $2,504,547 104,574
2025-06-30 $8,095,845 342,899
2025-06-30 $5,567,332 235,804
2025-06-30 $8,747,221 370,488
2025-03-31 $53,261,972 2,926,482
2025-03-31 $7,887,880 433,400
2025-03-31 $6,248,060 343,300
2024-12-31 $5,101,878 242,600
2024-12-31 $8,521,356 405,200
2024-12-31 $8,303,105 394,822
2024-09-30 $15,513,313 481,033