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AMTM

Dmitry Balyasny’s Amentum Holdings AMTM Stock Holding History

Dmitry Balyasny’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 		$1.76M Buy
85,389
+67,044
+365% +$1.62M ﹤0.01% 1889
2026
Q1 		$478K Sell
18,345
-249,654
-93% -$7.83M ﹤0.01% 2390
2025
Q4 		$7.77M Buy
267,999
+231,989
+644% +$5.93M 0.01% 1161
2025
Q3 		$862K Buy
+36,010
New +$877K ﹤0.01% 2175
2025
Q2 		– Sell
-1,880,887
Closed -$34.2M – 3473
2025
Q1 		$34.2M Buy
+1,880,887
New +$38.3M 0.06% 411
2024
Q4 		– Sell
-69,249
Closed -$2.23M – 3361
2024
Q3 		$2.23M Buy
+69,249
New +$1.97M ﹤0.01% 1620

Other funds holding AMTM

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
TCA
Troluce Capital Advisors Dorado, Puerto Rico $971M AUM 2.27% 1-Year Est. Return

Dmitry Balyasny's AMTM Position: Q2 2026 in Review

Dmitry Balyasny increased its Amentum Holdings (AMTM) stake by 365% in Q2 2026, buying an estimated $1.62M and bringing the position to 85,389 shares worth $1.76M. The position accounts for ﹤0.01% of the portfolio, ranked #1889.

Dmitry Balyasny first reported a position in AMTM in Q3 2024 and has held it in 6 quarters since. The position peaked at $34.2M in Q1 2025. 457 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Dmitry Balyasny held 85,389 shares of Amentum Holdings worth $1.76M as of Q2 2026.
  • Dmitry Balyasny bought 67,044 Amentum Holdings shares in Q2 2026, an estimated $1.62M.
  • Amentum Holdings made up ﹤0.01% of Dmitry Balyasny's portfolio in Q2 2026, its #1889 holding.
  • Dmitry Balyasny first reported a position in Amentum Holdings in Q3 2024 and has held it in 6 quarters since.
  • Dmitry Balyasny's Amentum Holdings position peaked at $34.2M in Q1 2025.
  • 457 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Balyasny Asset Management's 13F filing for Q2 2026, filed 14 Aug 2026.