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MILLENNIUM MANAGEMENT LLC

Position in AMTM — Amentum Holdings, Inc.

CIK 1273087 NEW YORK, NY

Position in AMTM

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$43,981,191
+$27,523,277 QoQ
Shares Held
2,127,779
+237.2% QoQ
Ownership
0.870%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
#18
of 463 holders
Holding Since
Sep 2024
8 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, 2026

MILLENNIUM MANAGEMENT LLC holds $983,901,187 across 20 Specialty Business Services names. AMTM ranks #6 (4.5% of the industry book) .

# Ticker Company Shares Value (USD) Open
6 AMTM
Amentum Holdings, Inc.
This page
2,127,779 $43,981,191

All Filings in AMTM

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8 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $43,981,191 2,127,779
2026-03-31 $16,457,914 631,055
2025-12-31 $1,774,423 61,187
2025-09-30 $15,347,136 640,799
2025-06-30 $110,169,336 4,666,215
2025-03-31 $36,614,614 2,011,792
2024-12-31 $25,163,951 1,196,574
2024-09-30 $21,664,485 671,767