Mawer Investment Management
AMTM

Mawer Investment Management’s Amentum Holdings AMTM Stock Holding History

Mawer Investment Management’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 		$7.64M Buy
369,557
+35,767
+11% +$865K 0.05% 119
2026
Q1 		$8.71M Buy
+333,790
New +$10.5M 0.06% 102

Other funds holding AMTM

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 $3.37T AUM 44.26% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $10.7B AUM 67.78% 1-Year Est. Return
TCA
Troluce Capital Advisors Dorado, Puerto Rico $971M AUM 2.27% 1-Year Est. Return

Mawer Investment Management's AMTM Position: Q2 2026 in Review

Mawer Investment Management increased its Amentum Holdings (AMTM) stake by 11% in Q2 2026, buying an estimated $865K and bringing the position to 369,557 shares worth $7.64M. The position accounts for 0.05% of the portfolio, ranked #119.

Mawer Investment Management first reported a position in AMTM in Q1 2026 and has held it in 2 quarters since. The position peaked at $8.71M in Q1 2026. 458 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Mawer Investment Management held 369,557 shares of Amentum Holdings worth $7.64M as of Q2 2026.
  • Mawer Investment Management bought 35,767 Amentum Holdings shares in Q2 2026, an estimated $865K.
  • Amentum Holdings made up 0.05% of Mawer Investment Management's portfolio in Q2 2026, its #119 holding.
  • Mawer Investment Management first reported a position in Amentum Holdings in Q1 2026 and has held it in 2 quarters since.
  • Mawer Investment Management's Amentum Holdings position peaked at $8.71M in Q1 2026.
  • 458 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Mawer Investment Management's 13F filing for Q2 2026, filed 7 Aug 2026.