De Lisle Partners’s Amentum Holdings AMTM Stock Holding History

De Lisle Partners’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	$7.74M	Sell	374,818 -5,000	-1%	-$121K	0.85%	35
2026 Q1	$9.9M	Buy	+379,818	New	+$11.9M	1.18%	22

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

De Lisle Partners's AMTM Position: Q2 2026 in Review

De Lisle Partners reduced its Amentum Holdings (AMTM) stake by 1.3% in Q2 2026, selling an estimated $121K and leaving 374,818 shares worth $7.74M. The position accounts for 0.85% of the portfolio, ranked #35.

De Lisle Partners first reported a position in AMTM in Q1 2026 and has held it in 2 quarters since. The position peaked at $9.9M in Q1 2026. 458 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

De Lisle Partners held 374,818 shares of Amentum Holdings worth $7.74M as of Q2 2026.
De Lisle Partners sold 5,000 Amentum Holdings shares in Q2 2026, an estimated $121K.
Amentum Holdings made up 0.85% of De Lisle Partners's portfolio in Q2 2026, its #35 holding.
De Lisle Partners first reported a position in Amentum Holdings in Q1 2026 and has held it in 2 quarters since.
De Lisle Partners's Amentum Holdings position peaked at $9.9M in Q1 2026.
458 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on De Lisle Partners's 13F filing for Q2 2026, filed 12 Aug 2026.