MIM
AMTM

Monashee Investment Management’s Amentum Holdings AMTM Stock Holding History

Monashee Investment Management’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
Q2 		– Sell
-360,000
Closed -$6.55M – 88
2025
Q1 		$6.55M Buy
+360,000
New +$7.33M 0.78% 17

Other funds holding AMTM

AS
American Securities New York $3.75B AUM 23.12% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
State Street
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
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
VanEck Associates
VanEck Associates New York $164B AUM 112.45% 1-Year Est. Return

Monashee Investment Management's AMTM Position: Q2 2025 in Review

Monashee Investment Management sold out of Amentum Holdings (AMTM) in Q2 2025, closing a stake of 360,000 shares — an estimated $6.55M sold.

Monashee Investment Management first reported a position in AMTM in Q1 2025 and held it in 1 quarter. The position peaked at $6.55M in Q1 2025. 460 funds tracked by Wall St. Rank hold AMTM as of Q2 2025.

  • Monashee Investment Management reported no remaining Amentum Holdings position as of Q2 2025 after selling out during the quarter.
  • Monashee Investment Management sold 360,000 Amentum Holdings shares in Q2 2025, an estimated $6.55M.
  • Monashee Investment Management first reported a position in Amentum Holdings in Q1 2025 and held it in 1 quarter.
  • Monashee Investment Management's Amentum Holdings position peaked at $6.55M in Q1 2025.
  • 460 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2025.

Based on Monashee Investment Management's 13F filing for Q2 2025, filed 11 Aug 2025.