UB
AMTM

UMB Bank’s Amentum Holdings AMTM Stock Holding History

UMB Bank’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 		$38.1K Sell
1,844
-657
-26% -$15.9K ﹤0.01% 1431
2026
Q1 		$65.2K Sell
2,501
-1,639
-40% -$51.4K ﹤0.01% 1149
2025
Q4 		$120K Sell
4,140
-28
-0.7% -$716 ﹤0.01% 867
2025
Q3 		$99.8K Buy
4,168
+47
+1% +$1.14K ﹤0.01% 868
2025
Q2 		$97.3K Buy
4,121
+430
+12% +$8.99K ﹤0.01% 846
2025
Q1 		$67.2K Sell
3,691
-4,405
-54% -$89.7K ﹤0.01% 927
2024
Q4 		$170K Buy
+8,096
New +$209K ﹤0.01% 584

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

UMB Bank's AMTM Position: Q2 2026 in Review

UMB Bank reduced its Amentum Holdings (AMTM) stake by 26% in Q2 2026, selling an estimated $15.9K and leaving 1,844 shares worth $38.1K. The position accounts for ﹤0.01% of the portfolio, ranked #1431.

UMB Bank first reported a position in AMTM in Q4 2024 and has held it in 7 quarters since. The position peaked at $170K in Q4 2024. 458 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • UMB Bank held 1,844 shares of Amentum Holdings worth $38.1K as of Q2 2026.
  • UMB Bank sold 657 Amentum Holdings shares in Q2 2026, an estimated $15.9K.
  • Amentum Holdings made up ﹤0.01% of UMB Bank's portfolio in Q2 2026, its #1431 holding.
  • UMB Bank first reported a position in Amentum Holdings in Q4 2024 and has held it in 7 quarters since.
  • UMB Bank's Amentum Holdings position peaked at $170K in Q4 2024.
  • 458 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on UMB Bank's 13F filing for Q2 2026, filed 13 Aug 2026.