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SEI INVESTMENTS CO

Position in AMTM — Amentum Holdings, Inc.

CIK 350894 OAKS, PA

Position in AMTM

as of Mar 31, 2026 · filed May 13, 2026
Position Value
$7,684,940
+$1,390,664 QoQ
Shares Held
294,668
+35.8% QoQ
Ownership
0.121%
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 100% Shared 0% None 0%

Common Shares in AMTM Over Time

Shares Held

Position Value (USD)

Position in Specialty Business Services

Industrials · as of Mar 31, 2026

SEI INVESTMENTS CO holds $255,786,194 across 23 Specialty Business Services names. AMTM ranks #10 (3.0% 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 $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