IMC Chicago’s Amentum Holdings AMTM Stock Holding History

IMC Chicago’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
2025 Q4	–	Sell	-19,237	Closed	-$492K	–	4531
2025 Q3	$461K	Buy	19,237 +3,527	+22%	+$85.9K	﹤0.01%	3224
2025 Q2	$371K	Buy	+15,710	New	+$328K	﹤0.01%	3013

Other funds holding AMTM

American Securities New York $3.75B AUM 23.12% 1-Year Est. Return

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

IMC Chicago's AMTM Position: Q4 2025 in Review

IMC Chicago sold out of Amentum Holdings (AMTM) in Q4 2025, closing a stake of 19,237 shares — an estimated $492K sold.

IMC Chicago first reported a position in AMTM in Q2 2025 and held it in 2 quarters. The position peaked at $461K in Q3 2025. 483 funds tracked by Wall St. Rank hold AMTM as of Q4 2025.

IMC Chicago reported no remaining Amentum Holdings position as of Q4 2025 after selling out during the quarter.
IMC Chicago sold 19,237 Amentum Holdings shares in Q4 2025, an estimated $492K.
IMC Chicago first reported a position in Amentum Holdings in Q2 2025 and held it in 2 quarters.
IMC Chicago's Amentum Holdings position peaked at $461K in Q3 2025.
483 funds tracked by Wall St. Rank held Amentum Holdings as of Q4 2025.

Based on IMC Chicago's 13F filing for Q4 2025, filed 29 Jan 2026.