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Rossby Financial, LCC

Position in AMTM — Amentum Holdings, Inc.

CIK 2056510 MELBOURNE, FL

Position in AMTM

as of Jun 30, 2026 · filed Aug 4, 2026
Position Value
$5,952
-$1,559 QoQ
Shares Held
288
0.0% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#346
of 458 holders
Holding Since
Mar 2025
6 quarters on record
Voting authority Sole 0% Shared 0% None 100%

Common Shares in AMTM Over Time

Shares Held

Position Value (USD)

Position in Specialty Business Services

Industrials · as of Jun 30, 2026

Rossby Financial, LCC holds $194,899 across 13 Specialty Business Services names. AMTM ranks #6 (3.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
6 AMTM
Amentum Holdings, Inc.
This page
288 $5,952

All Filings in AMTM

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6 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $5,952 288
2026-03-31 $7,511 288
2025-12-31 $8,352 288
2025-09-30 $6,897 288
2025-06-30 $6,799 288
2025-03-31 $4,950 272