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SEI INVESTMENTS CO

Position in AMTM — Amentum Holdings, Inc.

CIK 350894 OAKS, PA

Position in AMTM

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$3,928,726
-$3,756,214 QoQ
Shares Held
190,069
-35.5% QoQ
Ownership
0.078%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#84
of 462 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

SEI INVESTMENTS CO holds $249,181,224 across 26 Specialty Business Services names. AMTM ranks #13 (1.6% 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 $3,928,726 190,069
2026-03-31 $7,684,940 294,668
2025-12-31 $6,294,276 217,044
2025-09-30 $4,802,525 200,523
2025-06-30 $5,173,564 219,126
2025-03-31 $3,679,129 202,150
2024-12-31 $6,042,191 287,313
2024-09-30 $7,859,840 243,716