Bank of Montreal
AMTM

Bank of Montreal’s Amentum Holdings AMTM Stock Holding History

Bank of Montreal’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 		$423K Buy
20,485
+519
+3% +$12.6K ﹤0.01% 2559
2026
Q1 		$521K Buy
19,966
+557
+3% +$17.5K ﹤0.01% 2377
2025
Q4 		$563K Sell
19,409
-2,205
-10% -$56.4K ﹤0.01% 2251
2025
Q3 		$518K Sell
21,614
-19,055
-47% -$464K ﹤0.01% 2257
2025
Q2 		$960K Buy
40,669
+5,210
+15% +$109K ﹤0.01% 1918
2025
Q1 		$645K Sell
35,459
-24,282
-41% -$495K ﹤0.01% 2030
2024
Q4 		$1.26M Buy
+59,741
New +$1.54M ﹤0.01% 1763

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

Bank of Montreal's AMTM Position: Q2 2026 in Review

Bank of Montreal increased its Amentum Holdings (AMTM) stake by 2.6% in Q2 2026, buying an estimated $12.6K and bringing the position to 20,485 shares worth $423K. The position accounts for ﹤0.01% of the portfolio, ranked #2559.

Bank of Montreal first reported a position in AMTM in Q4 2024 and has held it in 7 quarters since. The position peaked at $1.26M in Q4 2024. 464 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Bank of Montreal held 20,485 shares of Amentum Holdings worth $423K as of Q2 2026.
  • Bank of Montreal bought 519 Amentum Holdings shares in Q2 2026, an estimated $12.6K.
  • Amentum Holdings made up ﹤0.01% of Bank of Montreal's portfolio in Q2 2026, its #2559 holding.
  • Bank of Montreal first reported a position in Amentum Holdings in Q4 2024 and has held it in 7 quarters since.
  • Bank of Montreal's Amentum Holdings position peaked at $1.26M in Q4 2024.
  • 464 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Bank of Montreal's 13F filing for Q2 2026, filed 12 Aug 2026.