S
AMTM

SignatureFD’s Amentum Holdings AMTM Stock Holding History

SignatureFD’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 		$44.7K Sell
2,164
-170
-7% -$4.11K ﹤0.01% 1942
2026
Q1 		$60.9K Sell
2,334
-9
-0.4% -$282 ﹤0.01% 1612
2025
Q4 		$67.9K Buy
2,343
+145
+7% +$3.71K ﹤0.01% 1488
2025
Q3 		$52.6K Sell
2,198
-43
-2% -$1.05K ﹤0.01% 1619
2025
Q2 		$52.9K Buy
2,241
+477
+27% +$9.97K ﹤0.01% 1554
2025
Q1 		$32.1K Buy
1,764
+916
+108% +$18.7K ﹤0.01% 1819
2024
Q4 		$17.8K Sell
848
-165
-16% -$4.26K ﹤0.01% 2116
2024
Q3 		$32.7K Buy
+1,013
New +$28.9K ﹤0.01% 1816

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

SignatureFD's AMTM Position: Q2 2026 in Review

SignatureFD reduced its Amentum Holdings (AMTM) stake by 7.3% in Q2 2026, selling an estimated $4.11K and leaving 2,164 shares worth $44.7K. The position accounts for ﹤0.01% of the portfolio, ranked #1942.

SignatureFD first reported a position in AMTM in Q3 2024 and has held it in 8 quarters since. The position peaked at $67.9K in Q4 2025. 462 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • SignatureFD held 2,164 shares of Amentum Holdings worth $44.7K as of Q2 2026.
  • SignatureFD sold 170 Amentum Holdings shares in Q2 2026, an estimated $4.11K.
  • Amentum Holdings made up ﹤0.01% of SignatureFD's portfolio in Q2 2026, its #1942 holding.
  • SignatureFD first reported a position in Amentum Holdings in Q3 2024 and has held it in 8 quarters since.
  • SignatureFD's Amentum Holdings position peaked at $67.9K in Q4 2025.
  • 462 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on SignatureFD's 13F filing for Q2 2026, filed 24 Jul 2026.