Matthew Hamilton Rosenberg’s Amentum Holdings AMTM Stock Holding History

Matthew Hamilton Rosenberg’s Portfolio AMTM Stock Details AMTM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$2.05K	Hold	99	–	–	﹤0.01%	734
2026 Q1	$2.58K	Hold	99	–	–	﹤0.01%	717
2025 Q4	$2.87K	Hold	99	–	–	﹤0.01%	729
2025 Q3	$2.37K	Hold	99	–	–	﹤0.01%	742
2025 Q2	$2.34K	Buy	99 +5	+5%	+$104	﹤0.01%	769
2025 Q1	$1.71K	Hold	94	–	–	﹤0.01%	770
2024 Q4	$1.98K	Hold	94	–	–	﹤0.01%	751
2024 Q3	$3.03K	Buy	+94	New	+$2.68K	﹤0.01%	728

Other funds holding AMTM

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

FCM

Frontier Capital Management Boston, Massachusetts $10.7B AUM 67.78% 1-Year Est. Return

TCA

Troluce Capital Advisors Dorado, Puerto Rico $971M AUM 2.27% 1-Year Est. Return

Matthew Hamilton Rosenberg's AMTM Position: Q2 2026 in Review

Matthew Hamilton Rosenberg held its Amentum Holdings (AMTM) position steady in Q2 2026 at 99 shares worth $2.05K. The position accounts for ﹤0.01% of the portfolio, ranked #734.

Matthew Hamilton Rosenberg first reported a position in AMTM in Q3 2024 and has held it in 8 quarters since. The position peaked at $3.03K in Q3 2024. 458 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

Matthew Hamilton Rosenberg held 99 shares of Amentum Holdings worth $2.05K as of Q2 2026.
Matthew Hamilton Rosenberg left its Amentum Holdings share count unchanged in Q2 2026.
Amentum Holdings made up ﹤0.01% of Matthew Hamilton Rosenberg's portfolio in Q2 2026, its #734 holding.
Matthew Hamilton Rosenberg first reported a position in Amentum Holdings in Q3 2024 and has held it in 8 quarters since.
Matthew Hamilton Rosenberg's Amentum Holdings position peaked at $3.03K in Q3 2024.
458 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Matthew Hamilton Rosenberg's 13F filing for Q2 2026, filed 17 Jul 2026.