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BlackRock, Inc.

Position in AMTM — Amentum Holdings, Inc.

CIK 2012383 New York, NY

Position in AMTM

as of Mar 31, 2026 · filed May 13, 2026
Position Value
$465,300,653
-$41,013,218 QoQ
Shares Held
17,841,283
+2.2% QoQ
Ownership
7.30%
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 98% Shared 0% None 2%

Common Shares in AMTM Over Time

Shares Held

Position Value (USD)

Position in Specialty Business Services

Industrials · as of Mar 31, 2026

BlackRock, Inc. holds $14,974,091,276 across 33 Specialty Business Services names. AMTM ranks #10 (3.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in AMTM

Export CSV
7 filing rows on record
Report Date Value (USD) Shares
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