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DIMENSIONAL FUND ADVISORS LP

Position in AMTM — Amentum Holdings, Inc.

CIK 354204 AUSTIN, TX

Position in AMTM

as of Jun 30, 2026 · filed Aug 11, 2026
Position Value
$114,464,174
+$15,688,262 QoQ
Shares Held
5,537,696
+46.2% QoQ
Ownership
2.26%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#9
of 462 holders
Holding Since
Sep 2024
8 quarters on record
Voting authority Sole 92% Shared 6% None 3%

Common Shares in AMTM Over Time

Shares Held

Position Value (USD)

Position in Specialty Business Services

Industrials · as of Jun 30, 2026

DIMENSIONAL FUND ADVISORS LP holds $2,518,628,197 across 30 Specialty Business Services names. AMTM ranks #9 (4.5% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in AMTM

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8 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $114,464,174 5,537,696
2026-03-31 $98,775,912 3,787,420
2025-12-31 $53,154,854 1,832,926
2025-09-30 $31,279,918 1,306,051
2025-06-30 $31,513,493 1,334,752
2025-03-31 $20,268,501 1,113,654
2024-12-31 $24,271,351 1,154,130
2024-09-30 $40,613,971 1,259,348