Northern Trust
AMTM

Northern Trust’s Amentum Holdings AMTM Stock Holding History

Northern Trust’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 		$25.7M Buy
984,105
+31,128
+3% +$977K ﹤0.01% 1511
2025
Q4 		$27.6M Buy
952,977
+10,032
+1% +$256K ﹤0.01% 1466
2025
Q3 		$22.6M Buy
942,945
+1,912
+0.2% +$46.6K ﹤0.01% 1608
2025
Q2 		$22.2M Buy
941,033
+86,610
+10% +$1.81M ﹤0.01% 1585
2025
Q1 		$15.6M Buy
854,423
+12,204
+1% +$249K ﹤0.01% 1774
2024
Q4 		$17.7M Buy
842,219
+693,706
+467% +$17.9M ﹤0.01% 1774
2024
Q3 		$4.79M Buy
+148,513
New +$4.23M ﹤0.01% 2501

Other funds holding AMTM

AS
American Securities New York $3.93B AUM 52.22% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $9.73B AUM 55.65% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Northern Trust's AMTM Position: Q1 2026 in Review

Northern Trust increased its Amentum Holdings (AMTM) stake by 3.3% in Q1 2026, buying an estimated $977K and bringing the position to 984,105 shares worth $25.7M. The position accounts for ﹤0.01% of the portfolio, ranked #1511.

Northern Trust first reported a position in AMTM in Q3 2024 and has held it in 7 quarters since. The position peaked at $27.6M in Q4 2025. 486 funds tracked by Wall St. Rank hold AMTM as of Q1 2026.

  • Northern Trust held 984,105 shares of Amentum Holdings worth $25.7M as of Q1 2026.
  • Northern Trust bought 31,128 Amentum Holdings shares in Q1 2026, an estimated $977K.
  • Amentum Holdings made up ﹤0.01% of Northern Trust's portfolio in Q1 2026, its #1511 holding.
  • Northern Trust first reported a position in Amentum Holdings in Q3 2024 and has held it in 7 quarters since.
  • Northern Trust's Amentum Holdings position peaked at $27.6M in Q4 2025.
  • 486 funds tracked by Wall St. Rank held Amentum Holdings as of Q1 2026.

Based on Northern Trust's 13F filing for Q1 2026, filed 14 May 2026.