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FOX RUN MANAGEMENT, L.L.C.

Position in AMTM — Amentum Holdings, Inc.

CIK 1533457 GREENWICH, CT

Position in AMTM

as of Mar 31, 2026 · filed May 12, 2026
Position Value
$885,129
+$674,937 QoQ
Shares Held
33,939
+368.3% QoQ
Ownership
0.014%
of shares outstanding
% of Portfolio
0.15%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Dec 2025
2 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in AMTM Over Time

Shares Held

Position Value (USD)

Position in Specialty Business Services

Industrials · as of Mar 31, 2026

FOX RUN MANAGEMENT, L.L.C. holds $4,710,358 across 10 Specialty Business Services names. AMTM ranks #2 (18.8% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 AMTM
Amentum Holdings, Inc.
This page
33,939 $885,129

All Filings in AMTM

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2 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $885,129 33,939
2025-12-31 $210,192 7,248