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Grantham, Mayo, Van Otterloo & Co. LLC

Position in AMTM — Amentum Holdings, Inc.

CIK 1352662 Boston, MA

Position in AMTM

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$446,492
+$143,239 QoQ
Shares Held
21,601
+106.6% QoQ
Ownership
0.009%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#209
of 461 holders
Holding Since
Sep 2025
3 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

Grantham, Mayo, Van Otterloo & Co. LLC holds $194,366,941 across 6 Specialty Business Services names. AMTM ranks #4 (0.2% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 AMTM
Amentum Holdings, Inc.
This page
21,601 $446,492

All Filings in AMTM

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3 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $446,492 21,601
2025-12-31 $303,253 10,457
2025-09-30 $250,445 10,457