FHA
AMTM

Flagship Harbor Advisors’s Amentum Holdings AMTM Stock Holding History

Flagship Harbor Advisors’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 		– Sell
-626
Closed -$18.2K – 2281
2025
Q4 		$18.2K Buy
+626
New +$16K ﹤0.01% 1349

Other funds holding AMTM

AS
American Securities New York $3.93B AUM 52.22% 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
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
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Flagship Harbor Advisors's AMTM Position: Q1 2026 in Review

Flagship Harbor Advisors sold out of Amentum Holdings (AMTM) in Q1 2026, closing a stake of 626 shares — an estimated $18.2K sold.

Flagship Harbor Advisors first reported a position in AMTM in Q4 2025 and held it in 1 quarter. The position peaked at $18.2K in Q4 2025. 486 funds tracked by Wall St. Rank hold AMTM as of Q1 2026.

  • Flagship Harbor Advisors reported no remaining Amentum Holdings position as of Q1 2026 after selling out during the quarter.
  • Flagship Harbor Advisors sold 626 Amentum Holdings shares in Q1 2026, an estimated $18.2K.
  • Flagship Harbor Advisors first reported a position in Amentum Holdings in Q4 2025 and held it in 1 quarter.
  • Flagship Harbor Advisors's Amentum Holdings position peaked at $18.2K in Q4 2025.
  • 486 funds tracked by Wall St. Rank held Amentum Holdings as of Q1 2026.

Based on Flagship Harbor Advisors's 13F filing for Q1 2026, filed 28 Apr 2026.