AllianceBernstein
AMTM

AllianceBernstein’s Amentum Holdings AMTM Stock Holding History

AllianceBernstein’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
Q1 		$2.14M Buy
73,806
+2,533
+4% +$79.5K ﹤0.01% 1956
2025
Q4 		$2.07M Sell
71,273
-98,453
-58% -$2.52M ﹤0.01% 1979
2025
Q3 		$4.06M Sell
169,726
-178,958
-51% -$4.36M ﹤0.01% 1621
2025
Q2 		$8.23M Buy
348,684
+293,505
+532% +$6.13M ﹤0.01% 1258
2025
Q1 		$1M Buy
55,179
+7,126
+15% +$145K ﹤0.01% 2236
2024
Q4 		$1.01M Sell
48,053
-94,593
-66% -$2.45M ﹤0.01% 2324
2024
Q3 		$4.6M Buy
+142,646
New +$4.06M ﹤0.01% 1549

Other funds holding AMTM

AS
American Securities New York $3.93B AUM 52.22% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $9.73B AUM 55.65% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

AllianceBernstein's AMTM Position: Q1 2026 in Review

AllianceBernstein increased its Amentum Holdings (AMTM) stake by 3.6% in Q1 2026, buying an estimated $79.5K and bringing the position to 73,806 shares worth $2.14M. The position accounts for ﹤0.01% of the portfolio, ranked #1956.

AllianceBernstein first reported a position in AMTM in Q3 2024 and has held it in 7 quarters since. The position peaked at $8.23M in Q2 2025. 486 funds tracked by Wall St. Rank hold AMTM as of Q1 2026.

  • AllianceBernstein held 73,806 shares of Amentum Holdings worth $2.14M as of Q1 2026.
  • AllianceBernstein bought 2,533 Amentum Holdings shares in Q1 2026, an estimated $79.5K.
  • Amentum Holdings made up ﹤0.01% of AllianceBernstein's portfolio in Q1 2026, its #1956 holding.
  • AllianceBernstein first reported a position in Amentum Holdings in Q3 2024 and has held it in 7 quarters since.
  • AllianceBernstein's Amentum Holdings position peaked at $8.23M in Q2 2025.
  • 486 funds tracked by Wall St. Rank held Amentum Holdings as of Q1 2026.

Based on AllianceBernstein's 13F filing for Q1 2026, filed 15 May 2026.