HighTower Advisors’s Amentum Holdings AMTM Stock Holding History

HighTower Advisors’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	$292K	Sell	14,108 -4,505	-24%	-$109K	﹤0.01%	3238
2026 Q1	$485K	Buy	18,613 +3,973	+27%	+$125K	﹤0.01%	2740
2025 Q4	$425K	Buy	14,640 +638	+5%	+$16.3K	﹤0.01%	2754
2025 Q3	$335K	Sell	14,002 -856	-6%	-$20.8K	﹤0.01%	2947
2025 Q2	$351K	Sell	14,858 -1,843	-11%	-$38.5K	﹤0.01%	2792
2025 Q1	$304K	Buy	16,701 +148	+0.9%	+$3.01K	﹤0.01%	2864
2024 Q4	$348K	Sell	16,553 -29,350	-64%	-$759K	﹤0.01%	2768
2024 Q3	$1.48M	Buy	+45,903	New	+$1.31M	﹤0.01%	1684

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

HighTower Advisors's AMTM Position: Q2 2026 in Review

HighTower Advisors reduced its Amentum Holdings (AMTM) stake by 24% in Q2 2026, selling an estimated $109K and leaving 14,108 shares worth $292K. The position accounts for ﹤0.01% of the portfolio, ranked #3238.

HighTower Advisors first reported a position in AMTM in Q3 2024 and has held it in 8 quarters since. The position peaked at $1.48M in Q3 2024. 458 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

HighTower Advisors held 14,108 shares of Amentum Holdings worth $292K as of Q2 2026.
HighTower Advisors sold 4,505 Amentum Holdings shares in Q2 2026, an estimated $109K.
Amentum Holdings made up ﹤0.01% of HighTower Advisors's portfolio in Q2 2026, its #3238 holding.
HighTower Advisors first reported a position in Amentum Holdings in Q3 2024 and has held it in 8 quarters since.
HighTower Advisors's Amentum Holdings position peaked at $1.48M in Q3 2024.
458 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on HighTower Advisors's 13F filing for Q2 2026, filed 5 Aug 2026.