Commonwealth Equity Services
AMTM

Commonwealth Equity Services’s Amentum Holdings AMTM Stock Holding History

Commonwealth Equity Services’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 		$377K Buy
18,240
+760
+4% +$18.4K ﹤0.01% 3548
2026
Q1 		$456K Buy
17,480
+969
+6% +$30.4K ﹤0.01% 3287
2025
Q4 		$479K Sell
16,511
-1,260
-7% -$32.2K ﹤0.01% 3208
2025
Q3 		$426K Sell
17,771
-4,367
-20% -$106K ﹤0.01% 3319
2025
Q2 		$523K Sell
22,138
-5,977
-21% -$125K ﹤0.01% 3103
2025
Q1 		$512K Sell
28,115
-4,465
-14% -$90.9K ﹤0.01% 3005
2024
Q4 		$685K Sell
32,580
-47,218
-59% -$1.22M ﹤0.01% 2719
2024
Q3 		$2.57M Buy
+79,798
New +$2.27M ﹤0.01% 1639

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

Commonwealth Equity Services's AMTM Position: Q2 2026 in Review

Commonwealth Equity Services increased its Amentum Holdings (AMTM) stake by 4.3% in Q2 2026, buying an estimated $18.4K and bringing the position to 18,240 shares worth $377K. The position accounts for ﹤0.01% of the portfolio, ranked #3548.

Commonwealth Equity Services first reported a position in AMTM in Q3 2024 and has held it in 8 quarters since. The position peaked at $2.57M in Q3 2024. 462 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Commonwealth Equity Services held 18,240 shares of Amentum Holdings worth $377K as of Q2 2026.
  • Commonwealth Equity Services bought 760 Amentum Holdings shares in Q2 2026, an estimated $18.4K.
  • Amentum Holdings made up ﹤0.01% of Commonwealth Equity Services's portfolio in Q2 2026, its #3548 holding.
  • Commonwealth Equity Services first reported a position in Amentum Holdings in Q3 2024 and has held it in 8 quarters since.
  • Commonwealth Equity Services's Amentum Holdings position peaked at $2.57M in Q3 2024.
  • 462 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Commonwealth Equity Services's 13F filing for Q2 2026, filed 29 Jul 2026.