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RHUMBLINE ADVISERS

Position in AMTM — Amentum Holdings, Inc.

CIK 1115418 BOSTON, MA

Position in AMTM

as of Mar 31, 2026 · filed May 12, 2026
Position Value
$7,831,641
-$620,148 QoQ
Shares Held
300,293
+3.0% QoQ
Ownership
0.123%
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 67% Shared 0% None 33%

Common Shares in AMTM Over Time

Shares Held

Position Value (USD)

Position in Specialty Business Services

Industrials · as of Mar 31, 2026

RHUMBLINE ADVISERS holds $366,305,662 across 31 Specialty Business Services names. AMTM ranks #11 (2.1% 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 $7,831,641 300,293
2025-12-31 $8,451,789 291,441
2025-09-30 $6,941,141 289,818
2025-06-30 $6,781,901 287,247
2025-03-31 $5,643,874 310,103
2024-12-31 $6,207,719 295,184
2024-09-30 $7,154,920 221,858