Russell Investments Group
AMTM

Russell Investments Group’s Amentum Holdings AMTM Stock Holding History

Russell Investments Group’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 		$17.4M Buy
840,642
+126,814
+18% +$3.07M 0.02% 796
2026
Q1 		$18.6M Buy
713,828
+276,812
+63% +$8.69M 0.02% 676
2025
Q4 		$12.7M Buy
437,016
+147,467
+51% +$3.77M 0.01% 792
2025
Q3 		$6.93M Sell
289,549
-38,633
-12% -$941K 0.01% 1112
2025
Q2 		$7.75M Buy
328,182
+95,249
+41% +$1.99M 0.01% 966
2025
Q1 		$4.24M Buy
232,933
+107,395
+86% +$2.19M 0.01% 1257
2024
Q4 		$2.64M Buy
125,538
+48,147
+62% +$1.24M ﹤0.01% 1523
2024
Q3 		$2.5M Buy
+77,391
New +$2.2M ﹤0.01% 1572

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

Russell Investments Group's AMTM Position: Q2 2026 in Review

Russell Investments Group increased its Amentum Holdings (AMTM) stake by 18% in Q2 2026, buying an estimated $3.07M and bringing the position to 840,642 shares worth $17.4M. The position accounts for 0.02% of the portfolio, ranked #796.

Russell Investments Group first reported a position in AMTM in Q3 2024 and has held it in 8 quarters since. The position peaked at $18.6M in Q1 2026. 464 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Russell Investments Group held 840,642 shares of Amentum Holdings worth $17.4M as of Q2 2026.
  • Russell Investments Group bought 126,814 Amentum Holdings shares in Q2 2026, an estimated $3.07M.
  • Amentum Holdings made up 0.02% of Russell Investments Group's portfolio in Q2 2026, its #796 holding.
  • Russell Investments Group first reported a position in Amentum Holdings in Q3 2024 and has held it in 8 quarters since.
  • Russell Investments Group's Amentum Holdings position peaked at $18.6M in Q1 2026.
  • 464 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Russell Investments Group's 13F filing for Q2 2026, filed 6 Aug 2026.