WOC
AMTM

West Oak Capital’s Amentum Holdings AMTM Stock Holding History

West Oak Capital’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
Q3 		$16.7K Sell
696
-66
-9% -$1.61K 0.01% 199
2025
Q2 		$18K Buy
+762
New +$15.9K 0.01% 217

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
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 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
Kovitz Investment Group Partners
Kovitz Investment Group Partners Chicago, Illinois $4.52B AUM 31.84% 1-Year Est. Return
TSW
Thompson Siegel & Walmsley Richmond, Virginia $5.57B AUM 9.46% 1-Year Est. Return

West Oak Capital's AMTM Position: Q3 2025 in Review

West Oak Capital reduced its Amentum Holdings (AMTM) stake by 8.7% in Q3 2025, selling an estimated $1.61K and leaving 696 shares worth $16.7K. The position accounts for 0.01% of the portfolio, ranked #199.

West Oak Capital first reported a position in AMTM in Q2 2025 and has held it in 2 quarters since. The position peaked at $18K in Q2 2025. 462 funds tracked by Wall St. Rank hold AMTM as of Q3 2025.

  • West Oak Capital held 696 shares of Amentum Holdings worth $16.7K as of Q3 2025.
  • West Oak Capital sold 66 Amentum Holdings shares in Q3 2025, an estimated $1.61K.
  • Amentum Holdings made up 0.01% of West Oak Capital's portfolio in Q3 2025, its #199 holding.
  • West Oak Capital first reported a position in Amentum Holdings in Q2 2025 and has held it in 2 quarters since.
  • West Oak Capital's Amentum Holdings position peaked at $18K in Q2 2025.
  • 462 funds tracked by Wall St. Rank held Amentum Holdings as of Q3 2025.

Based on West Oak Capital's 13F filing for Q3 2025, filed 3 Oct 2025.