MP
AMTM

McDonald Partners’s Amentum Holdings AMTM Stock Holding History

McDonald Partners’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 		$63.9K Buy
+3,092
New +$74.8K 0.02% 312
2024
Q4 		– Sell
-6,726
Closed -$217K – 249
2024
Q3 		$217K Buy
+6,726
New +$192K 0.05% 224

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
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 $3.38T AUM 44.17% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $10.7B AUM 67.78% 1-Year Est. Return

McDonald Partners's AMTM Position: Q2 2026 in Review

McDonald Partners opened a new position in Amentum Holdings (AMTM) in Q2 2026: 3,092 shares worth $63.9K. The stake represents 0.02% of the portfolio and ranks #312 among its holdings. This is a return to the name: McDonald Partners previously reported a position in AMTM as recently as Q3 2024.

McDonald Partners first reported a position in AMTM in Q3 2024 and has held it in 2 quarters since. The position peaked at $217K in Q3 2024. 464 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • McDonald Partners held 3,092 shares of Amentum Holdings worth $63.9K as of Q2 2026.
  • Amentum Holdings was a new McDonald Partners position in Q2 2026.
  • Amentum Holdings made up 0.02% of McDonald Partners's portfolio in Q2 2026, its #312 holding.
  • McDonald Partners first reported a position in Amentum Holdings in Q3 2024 and has held it in 2 quarters since.
  • McDonald Partners's Amentum Holdings position peaked at $217K in Q3 2024.
  • 464 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on McDonald Partners's 13F filing for Q2 2026, filed 28 Jul 2026.