CI
AMTM

CX Institutional’s Amentum Holdings AMTM Stock Holding History

CX Institutional’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 		$159K Sell
7,694
-202
-3% -$4.89K ﹤0.01% 784
2026
Q1 		$206K Sell
7,896
-44
-0.6% -$1.38K 0.01% 710
2025
Q4 		$230K Sell
7,940
-135
-2% -$3.45K 0.01% 664
2025
Q3 		$193K Sell
8,075
-141
-2% -$3.43K 0.01% 701
2025
Q2 		$194K Buy
8,216
+7,603
+1,240% +$159K 0.01% 638
2025
Q1 		$11K Buy
+613
New +$12.5K ﹤0.01% 1008

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

CX Institutional's AMTM Position: Q2 2026 in Review

CX Institutional reduced its Amentum Holdings (AMTM) stake by 2.6% in Q2 2026, selling an estimated $4.89K and leaving 7,694 shares worth $159K. The position accounts for ﹤0.01% of the portfolio, ranked #784.

CX Institutional first reported a position in AMTM in Q1 2025 and has held it in 6 quarters since. The position peaked at $230K in Q4 2025. 462 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • CX Institutional held 7,694 shares of Amentum Holdings worth $159K as of Q2 2026.
  • CX Institutional sold 202 Amentum Holdings shares in Q2 2026, an estimated $4.89K.
  • Amentum Holdings made up ﹤0.01% of CX Institutional's portfolio in Q2 2026, its #784 holding.
  • CX Institutional first reported a position in Amentum Holdings in Q1 2025 and has held it in 6 quarters since.
  • CX Institutional's Amentum Holdings position peaked at $230K in Q4 2025.
  • 462 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on CX Institutional's 13F filing for Q2 2026, filed 2 Jul 2026.