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BlackRock, Inc.

Position in AMTM — Amentum Holdings, Inc.

CIK 2012383 New York, NY

Position in AMTM

as of Jun 30, 2026 · filed Aug 7, 2026
Position Value
$370,137,353
-$95,163,300 QoQ
Shares Held
17,906,984
+0.4% QoQ
Ownership
7.32%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#3
of 462 holders
Holding Since
Sep 2024
8 quarters on record
Voting authority Sole 98% Shared 0% None 2%

Common Shares in AMTM Over Time

Shares Held

Position Value (USD)

Position in Specialty Business Services

Industrials · as of Jun 30, 2026

BlackRock, Inc. holds $16,310,210,365 across 35 Specialty Business Services names. AMTM ranks #11 (2.3% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in AMTM

Export CSV
8 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $370,137,353 17,906,984
2026-03-31 $465,300,653 17,841,283
2025-12-31 $506,313,871 17,459,099
2025-09-30 $430,871,246 17,990,449
2025-06-30 $448,473,903 18,995,083
2025-03-31 $332,131,595 18,248,989
2024-12-31 $352,773,424 16,774,771
2024-09-30 $287,587,045 8,917,428