K2 Principal Fund’s Amentum Holdings AMTM Stock Holding History

K2 Principal Fund’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	–	Sell	-20,000	Closed	-$522K	–	589
2026 Q1	$522K	Buy	+20,000	New	+$628K	0.04%	312

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

K2 Principal Fund's AMTM Position: Q2 2026 in Review

K2 Principal Fund sold out of Amentum Holdings (AMTM) in Q2 2026, closing a stake of 60,000 shares — an estimated $1.56M sold.

K2 Principal Fund first reported a position in AMTM in Q1 2026 and held it in 1 quarter. The position peaked at $1.56M in Q1 2026. 462 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

K2 Principal Fund reported no remaining Amentum Holdings position as of Q2 2026 after selling out during the quarter.
K2 Principal Fund sold 60,000 Amentum Holdings shares in Q2 2026, an estimated $1.56M.
K2 Principal Fund first reported a position in Amentum Holdings in Q1 2026 and held it in 1 quarter.
K2 Principal Fund's Amentum Holdings position peaked at $1.56M in Q1 2026.
462 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on K2 Principal Fund's 13F filing for Q2 2026, filed 7 Aug 2026.