Cambridge Investment Research Advisors
AMTM

Cambridge Investment Research Advisors’s Amentum Holdings AMTM Stock Holding History

Cambridge Investment Research Advisors’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 		$341K Sell
16,485
-2,744
-14% -$66.4K ﹤0.01% 3336
2026
Q1 		$501K Buy
19,229
+1,923
+11% +$60.3K ﹤0.01% 2804
2025
Q4 		$502K Sell
17,306
-356
-2% -$9.1K ﹤0.01% 2716
2025
Q3 		$423K Sell
17,662
-517
-3% -$12.6K ﹤0.01% 2820
2025
Q2 		$429K Buy
18,179
+2,992
+20% +$62.5K ﹤0.01% 2681
2025
Q1 		$276K Sell
15,187
-1,949
-11% -$39.7K ﹤0.01% 2934
2024
Q4 		$360K Sell
17,136
-2,599
-13% -$67.2K ﹤0.01% 2692
2024
Q3 		$636K Buy
+19,735
New +$562K ﹤0.01% 2222

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 $3.38T AUM 44.17% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $10.7B AUM 67.78% 1-Year Est. Return

Cambridge Investment Research Advisors's AMTM Position: Q2 2026 in Review

Cambridge Investment Research Advisors reduced its Amentum Holdings (AMTM) stake by 14% in Q2 2026, selling an estimated $66.4K and leaving 16,485 shares worth $341K. The position accounts for ﹤0.01% of the portfolio, ranked #3336.

Cambridge Investment Research Advisors first reported a position in AMTM in Q3 2024 and has held it in 8 quarters since. The position peaked at $636K in Q3 2024. 464 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Cambridge Investment Research Advisors held 16,485 shares of Amentum Holdings worth $341K as of Q2 2026.
  • Cambridge Investment Research Advisors sold 2,744 Amentum Holdings shares in Q2 2026, an estimated $66.4K.
  • Amentum Holdings made up ﹤0.01% of Cambridge Investment Research Advisors's portfolio in Q2 2026, its #3336 holding.
  • Cambridge Investment Research Advisors first reported a position in Amentum Holdings in Q3 2024 and has held it in 8 quarters since.
  • Cambridge Investment Research Advisors's Amentum Holdings position peaked at $636K in Q3 2024.
  • 464 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Cambridge Investment Research Advisors's 13F filing for Q2 2026, filed 27 Jul 2026.