GF
AMTM

Gabelli Funds’s Amentum Holdings AMTM Stock Holding History

Gabelli Funds’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 		$1.58M Buy
76,283
+6,500
+9% +$157K 0.01% 811
2026
Q1 		$1.82M Buy
69,783
+48,395
+226% +$1.52M 0.01% 766
2025
Q4 		$620K Sell
21,388
-900
-4% -$23K ﹤0.01% 1006
2025
Q3 		$534K Sell
22,288
-2,765
-11% -$67.3K ﹤0.01% 1037
2025
Q2 		$592K Buy
+25,053
New +$524K ﹤0.01% 989

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

Gabelli Funds's AMTM Position: Q2 2026 in Review

Gabelli Funds increased its Amentum Holdings (AMTM) stake by 9.3% in Q2 2026, buying an estimated $157K and bringing the position to 76,283 shares worth $1.58M. The position accounts for 0.01% of the portfolio, ranked #811.

Gabelli Funds first reported a position in AMTM in Q2 2025 and has held it in 5 quarters since. The position peaked at $1.82M in Q1 2026. 458 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Gabelli Funds held 76,283 shares of Amentum Holdings worth $1.58M as of Q2 2026.
  • Gabelli Funds bought 6,500 Amentum Holdings shares in Q2 2026, an estimated $157K.
  • Amentum Holdings made up 0.01% of Gabelli Funds's portfolio in Q2 2026, its #811 holding.
  • Gabelli Funds first reported a position in Amentum Holdings in Q2 2025 and has held it in 5 quarters since.
  • Gabelli Funds's Amentum Holdings position peaked at $1.82M in Q1 2026.
  • 458 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Gabelli Funds's 13F filing for Q2 2026, filed 12 Aug 2026.