Vanguard Group
AMTM

Vanguard Group’s Amentum Holdings AMTM Stock Holding History

Vanguard Group’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
2025
Q4 		$447M Sell
15,411,745
-142,946
-0.9% -$3.65M 0.01% 1123
2025
Q3 		$373M Sell
15,554,691
-979,134
-6% -$23.8M 0.01% 1224
2025
Q2 		$390M Buy
16,533,825
+191,265
+1% +$4M 0.01% 1165
2025
Q1 		$297M Sell
16,342,560
-199,887
-1% -$4.07M 0.01% 1277
2024
Q4 		$348M Buy
16,542,447
+2,529,173
+18% +$65.4M 0.01% 1258
2024
Q3 		$452M Buy
+14,013,274
New +$399M 0.01% 1102

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
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $10.7B AUM 67.78% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Focus Partners Wealth
Focus Partners Wealth Boston, Massachusetts $97.6B AUM 29.43% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
RCG
Ruane, Cunniff & Goldfarb New York $6.43B AUM 18.44% 1-Year Est. Return

Vanguard Group's AMTM Position: Q4 2025 in Review

Vanguard Group reduced its Amentum Holdings (AMTM) stake by 0.92% in Q4 2025, selling an estimated $3.65M and leaving 15,411,745 shares worth $447M. The position accounts for 0.01% of the portfolio, ranked #1123.

Vanguard Group first reported a position in AMTM in Q3 2024 and has held it in 6 quarters since. The position peaked at $452M in Q3 2024. 483 funds tracked by Wall St. Rank hold AMTM as of Q4 2025.

  • Vanguard Group held 15,411,745 shares of Amentum Holdings worth $447M as of Q4 2025.
  • Vanguard Group sold 142,946 Amentum Holdings shares in Q4 2025, an estimated $3.65M.
  • Amentum Holdings made up 0.01% of Vanguard Group's portfolio in Q4 2025, its #1123 holding.
  • Vanguard Group first reported a position in Amentum Holdings in Q3 2024 and has held it in 6 quarters since.
  • Vanguard Group's Amentum Holdings position peaked at $452M in Q3 2024.
  • 483 funds tracked by Wall St. Rank held Amentum Holdings as of Q4 2025.

Based on Vanguard Group's 13F filing for Q4 2025, filed 29 Jan 2026.