CIBC Asset Management
AMTM

CIBC Asset Management’s Amentum Holdings AMTM Stock Holding History

CIBC Asset 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 		$354K Sell
17,104
-1,331
-7% -$32.2K ﹤0.01% 954
2026
Q1 		$481K Sell
18,435
-451
-2% -$14.2K ﹤0.01% 812
2025
Q4 		$548K Buy
18,886
+4,906
+35% +$125K ﹤0.01% 786
2025
Q3 		$335K Sell
13,980
-12
-0.1% -$292 ﹤0.01% 889
2025
Q2 		$330K Buy
13,992
+839
+6% +$17.5K ﹤0.01% 861
2025
Q1 		$239K Buy
13,153
+917
+7% +$18.7K ﹤0.01% 975
2024
Q4 		$257K Sell
12,236
-5,981
-33% -$155K ﹤0.01% 960
2024
Q3 		$587K Buy
+18,217
New +$519K ﹤0.01% 721

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

CIBC Asset Management's AMTM Position: Q2 2026 in Review

CIBC Asset Management reduced its Amentum Holdings (AMTM) stake by 7.2% in Q2 2026, selling an estimated $32.2K and leaving 17,104 shares worth $354K. The position accounts for ﹤0.01% of the portfolio, ranked #954.

CIBC Asset Management first reported a position in AMTM in Q3 2024 and has held it in 8 quarters since. The position peaked at $587K in Q3 2024. 464 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • CIBC Asset Management held 17,104 shares of Amentum Holdings worth $354K as of Q2 2026.
  • CIBC Asset Management sold 1,331 Amentum Holdings shares in Q2 2026, an estimated $32.2K.
  • Amentum Holdings made up ﹤0.01% of CIBC Asset Management's portfolio in Q2 2026, its #954 holding.
  • CIBC Asset Management first reported a position in Amentum Holdings in Q3 2024 and has held it in 8 quarters since.
  • CIBC Asset Management's Amentum Holdings position peaked at $587K in Q3 2024.
  • 464 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on CIBC Asset Management's 13F filing for Q2 2026, filed 3 Aug 2026.