Skip to main content

JANE STREET GROUP, LLC

Position in AMTM — Amentum Holdings, Inc.

CIK 1595888 NEW YORK, NY

Position in AMTM

as of Mar 31, 2026 · filed May 12, 2026
Position Value
$5,006,811
+$4,693,350 QoQ
Shares Held
191,979
+1676.1% QoQ
Ownership
0.079%
of shares outstanding
% of Portfolio
0.01%
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
$3,632,944
CallShares
139,300
PutValue
$2,362,848
PutShares
90,600

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

JANE STREET GROUP, LLC holds $169,214,129 across 25 Specialty Business Services names. AMTM ranks #10 (3.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in AMTM

Export CSV
18 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $2,362,848 90,600
2026-03-31 $5,006,811 191,979
2026-03-31 $3,632,944 139,300
2025-12-31 $1,041,100 35,900
2025-12-31 $2,180,800 75,200
2025-12-31 $313,461 10,809
2025-09-30 $2,258,964 94,320
2025-09-30 $637,070 26,600
2025-09-30 $7,215,200 301,261
2025-06-30 $2,265,237 95,944
2025-06-30 $2,247,955 95,212
2025-03-31 $4,342,520 238,600
2025-03-31 $6,142,500 337,500
2025-03-31 $10,952,031 601,760
2024-12-31 $2,969,436 141,200
2024-12-31 $3,459,435 164,500
2024-12-31 $578,113 27,490
2024-09-30 $1,842,990 57,147