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VANGUARD PORTFOLIO MANAGEMENT LLC

Position in AMTM — Amentum Holdings, Inc.

CIK 2100121 MALVERN, PA

Position in AMTM

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$164,293,117
-$40,511,845 QoQ
Shares Held
7,948,385
+1.2% QoQ
Ownership
3.25%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#6
of 462 holders
Holding Since
Mar 2026
2 quarters on record
Voting authority Sole 0% Shared 0% None 100%

Common Shares in AMTM Over Time

Shares Held

Position Value (USD)

Position in Specialty Business Services

Industrials · as of Jun 30, 2026

VANGUARD PORTFOLIO MANAGEMENT LLC holds $7,778,512,737 across 27 Specialty Business Services names. AMTM ranks #12 (2.1% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in AMTM

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2 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $164,293,117 7,948,385
2026-03-31 $204,804,962 7,852,951