X
AMTM

Xponance’s Amentum Holdings AMTM Stock Holding History

Xponance’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 		$225K Sell
10,908
-573
-5% -$13.9K ﹤0.01% 1551
2026
Q1 		$299K Buy
11,481
+3,043
+36% +$95.5K ﹤0.01% 1271
2025
Q4 		$245K Buy
+8,438
New +$216K ﹤0.01% 1288
2024
Q4 		– Sell
-16,454
Closed -$531K – 1472
2024
Q3 		$531K Buy
+16,454
New +$469K 0.01% 918

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

Xponance's AMTM Position: Q2 2026 in Review

Xponance reduced its Amentum Holdings (AMTM) stake by 5% in Q2 2026, selling an estimated $13.9K and leaving 10,908 shares worth $225K. The position accounts for ﹤0.01% of the portfolio, ranked #1551.

Xponance first reported a position in AMTM in Q3 2024 and has held it in 4 quarters since. The position peaked at $531K in Q3 2024. 462 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Xponance held 10,908 shares of Amentum Holdings worth $225K as of Q2 2026.
  • Xponance sold 573 Amentum Holdings shares in Q2 2026, an estimated $13.9K.
  • Amentum Holdings made up ﹤0.01% of Xponance's portfolio in Q2 2026, its #1551 holding.
  • Xponance first reported a position in Amentum Holdings in Q3 2024 and has held it in 4 quarters since.
  • Xponance's Amentum Holdings position peaked at $531K in Q3 2024.
  • 462 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Xponance's 13F filing for Q2 2026, filed 10 Aug 2026.