Skip to main content

GAMCO INVESTORS, INC. ET AL

Position in AMTM — Amentum Holdings, Inc.

CIK 807249 GREENWICH, CT

Position in AMTM

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$2,007,470
-$478,762 QoQ
Shares Held
97,120
+1.9% QoQ
Ownership
0.040%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#114
of 462 holders
Holding Since
Jun 2025
5 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

GAMCO INVESTORS, INC. ET AL holds $67,033,260 across 10 Specialty Business Services names. AMTM ranks #4 (3.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 AMTM
Amentum Holdings, Inc.
This page
97,120 $2,007,470

All Filings in AMTM

Export CSV
5 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $2,007,470 97,120
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