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GAMCO INVESTORS, INC. ET AL

Position in AMTM — Amentum Holdings, Inc.

CIK 807249 GREENWICH, CT

Position in AMTM

as of Mar 31, 2026 · filed May 14, 2026
Position Value
$2,486,232
-$177,737 QoQ
Shares Held
95,331
+3.8% QoQ
Ownership
0.039%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Jun 2025
4 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

GAMCO INVESTORS, INC. ET AL holds $59,376,540 across 11 Specialty Business Services names. AMTM ranks #4 (4.2% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 AMTM
Amentum Holdings, Inc.
This page
95,331 $2,486,232

All Filings in AMTM

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4 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $2,486,232 95,331
2025-12-31 $2,663,969 91,861
2025-09-30 $2,386,449 99,643
2025-06-30 $2,565,698 108,670