SFM
AMTM

Soros Fund Management’s Amentum Holdings AMTM Stock Holding History

Soros Fund 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 		$2.44M Buy
118,276
+10,670
+10% +$258K 0.03% 201
2026
Q1 		$2.81M Sell
107,606
-1,697
-2% -$53.3K 0.03% 200
2025
Q4 		$3.17M Buy
+109,303
New +$2.79M 0.04% 184
2024
Q4 		– Sell
-27,001
Closed -$871K – 256
2024
Q3 		$871K Buy
+27,001
New +$769K 0.01% 166

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

Soros Fund Management's AMTM Position: Q2 2026 in Review

Soros Fund Management increased its Amentum Holdings (AMTM) stake by 9.9% in Q2 2026, buying an estimated $258K and bringing the position to 118,276 shares worth $2.44M. The position accounts for 0.03% of the portfolio, ranked #201.

Soros Fund Management first reported a position in AMTM in Q3 2024 and has held it in 4 quarters since. The position peaked at $3.17M in Q4 2025. 460 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Soros Fund Management held 118,276 shares of Amentum Holdings worth $2.44M as of Q2 2026.
  • Soros Fund Management bought 10,670 Amentum Holdings shares in Q2 2026, an estimated $258K.
  • Amentum Holdings made up 0.03% of Soros Fund Management's portfolio in Q2 2026, its #201 holding.
  • Soros Fund Management first reported a position in Amentum Holdings in Q3 2024 and has held it in 4 quarters since.
  • Soros Fund Management's Amentum Holdings position peaked at $3.17M in Q4 2025.
  • 460 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

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