CAM
AMTM

Chesapeake Asset Management’s Amentum Holdings AMTM Stock Holding History

Chesapeake Asset Management’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 		$6.88K Sell
333
-36
-10% -$871 0.01% 266
2026
Q1 		$9.62K Hold
369
– – 0.01% 243
2025
Q4 		$10.7K Hold
369
– – 0.01% 246
2025
Q3 		$8.84K Hold
369
– – 0.01% 237
2025
Q2 		$8.71K Sell
369
-181
-33% -$3.78K 0.01% 225
2025
Q1 		$10K Sell
550
-14,123
-96% -$288K 0.01% 213
2024
Q4 		$309K Hold
14,673
– – 0.29% 67
2024
Q3 		$473K Buy
+14,673
New +$418K 0.41% 58

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

Chesapeake Asset Management's AMTM Position: Q2 2026 in Review

Chesapeake Asset Management reduced its Amentum Holdings (AMTM) stake by 9.8% in Q2 2026, selling an estimated $871 and leaving 333 shares worth $6.88K. The position accounts for 0.01% of the portfolio, ranked #266.

Chesapeake Asset Management first reported a position in AMTM in Q3 2024 and has held it in 8 quarters since. The position peaked at $473K in Q3 2024. 462 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Chesapeake Asset Management held 333 shares of Amentum Holdings worth $6.88K as of Q2 2026.
  • Chesapeake Asset Management sold 36 Amentum Holdings shares in Q2 2026, an estimated $871.
  • Amentum Holdings made up 0.01% of Chesapeake Asset Management's portfolio in Q2 2026, its #266 holding.
  • Chesapeake Asset Management first reported a position in Amentum Holdings in Q3 2024 and has held it in 8 quarters since.
  • Chesapeake Asset Management's Amentum Holdings position peaked at $473K in Q3 2024.
  • 462 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Chesapeake Asset Management's 13F filing for Q2 2026, filed 4 Aug 2026.