CM
AMTM

Caption Management’s Amentum Holdings AMTM Stock Holding History

Caption 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
2026
Q2 		$1.03M Sell
50,000
-400,000
-89% -$9.67M ﹤0.01% 1126
2026
Q1 		$11.7M Buy
450,000
+250,000
+125% +$7.84M 0.07% 297
2025
Q4 		$5.8M Buy
+200,000
New +$5.11M 0.04% 473
2025
Q2 		– Sell
-57,000
Closed -$1.04M – 2000
2025
Q1 		$1.04M Sell
57,000
-143,000
-72% -$2.91M 0.01% 905
2024
Q4 		$4.21M Buy
+200,000
New +$5.17M 0.04% 420

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
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 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

Caption Management's AMTM Position: Q2 2026 in Review

Caption Management increased its Amentum Holdings (AMTM) stake by 195% in Q2 2026, buying an estimated $1.02M and bringing the position to 64,000 shares worth $1.32M. The position accounts for 0.01% of the portfolio, ranked #1036.

Caption Management first reported a position in AMTM in Q4 2024 and has held it in 6 quarters since. The position peaked at $3.38M in Q4 2025. 461 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Caption Management held 64,000 shares of Amentum Holdings worth $1.32M as of Q2 2026.
  • Caption Management bought 42,278 Amentum Holdings shares in Q2 2026, an estimated $1.02M.
  • Amentum Holdings made up 0.01% of Caption Management's portfolio in Q2 2026, its #1036 holding.
  • Caption Management first reported a position in Amentum Holdings in Q4 2024 and has held it in 6 quarters since.
  • Caption Management's Amentum Holdings position peaked at $3.38M in Q4 2025.
  • 461 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Caption Management's 13F filing for Q2 2026, filed 14 Aug 2026.