Janney Montgomery Scott’s Amentum Holdings AMTM Stock Holding History

Janney Montgomery Scott’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	$216K	Sell	10,442 -2,286	-18%	-$55.3K	﹤0.01%	2951
2026 Q1	$332K	Buy	+12,728	New	+$399K	﹤0.01%	2319
2025 Q3	–	Sell	-10,014	Closed	-$236K	–	3000
2025 Q2	$236K	Sell	10,014 -23,753	-70%	-$496K	﹤0.01%	2480
2025 Q1	$615K	Buy	+33,767	New	+$688K	﹤0.01%	1849
2024 Q4	–	Sell	-67,549	Closed	-$2.18M	–	2879
2024 Q3	$2.18M	Buy	+67,549	New	+$1.92M	0.01%	1105

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

Janney Montgomery Scott's AMTM Position: Q2 2026 in Review

Janney Montgomery Scott reduced its Amentum Holdings (AMTM) stake by 18% in Q2 2026, selling an estimated $55.3K and leaving 10,442 shares worth $216K. The position accounts for ﹤0.01% of the portfolio, ranked #2951.

Janney Montgomery Scott first reported a position in AMTM in Q3 2024 and has held it in 5 quarters since. The position peaked at $2.18M in Q3 2024. 458 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

Janney Montgomery Scott held 10,442 shares of Amentum Holdings worth $216K as of Q2 2026.
Janney Montgomery Scott sold 2,286 Amentum Holdings shares in Q2 2026, an estimated $55.3K.
Amentum Holdings made up ﹤0.01% of Janney Montgomery Scott's portfolio in Q2 2026, its #2951 holding.
Janney Montgomery Scott first reported a position in Amentum Holdings in Q3 2024 and has held it in 5 quarters since.
Janney Montgomery Scott's Amentum Holdings position peaked at $2.18M in Q3 2024.
458 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Janney Montgomery Scott's 13F filing for Q2 2026, filed 5 Aug 2026.