Acadian Asset Management
AMTM

Acadian Asset Management’s Amentum Holdings AMTM Stock Holding History

Acadian 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 		– Sell
-5,957
Closed -$155K – 2298
2026
Q1 		$155K Sell
5,957
-2,242
-27% -$70.4K ﹤0.01% 1647
2025
Q4 		$237K Buy
+8,199
New +$210K ﹤0.01% 1487

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

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

Acadian Asset Management sold out of Amentum Holdings (AMTM) in Q2 2026, closing a stake of 5,957 shares — an estimated $155K sold.

Acadian Asset Management first reported a position in AMTM in Q4 2025 and held it in 2 quarters. The position peaked at $237K in Q4 2025. 464 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Acadian Asset Management reported no remaining Amentum Holdings position as of Q2 2026 after selling out during the quarter.
  • Acadian Asset Management sold 5,957 Amentum Holdings shares in Q2 2026, an estimated $155K.
  • Acadian Asset Management first reported a position in Amentum Holdings in Q4 2025 and held it in 2 quarters.
  • Acadian Asset Management's Amentum Holdings position peaked at $237K in Q4 2025.
  • 464 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

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