TBA
AMTM

Tower Bridge Advisors’s Amentum Holdings AMTM Stock Holding History

Tower Bridge Advisors’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 		$688K Sell
33,261
-2,437
-7% -$58.9K 0.06% 150
2026
Q1 		$931K Buy
35,698
+1,516
+4% +$47.6K 0.09% 125
2025
Q4 		$991K Sell
34,182
-3,022
-8% -$77.3K 0.1% 109
2025
Q3 		$891K Buy
37,204
+1,146
+3% +$27.9K 0.09% 115
2025
Q2 		$851K Sell
36,058
-2,830
-7% -$59.1K 0.09% 117
2025
Q1 		$708K Sell
38,888
-54,844
-59% -$1.12M 0.08% 122
2024
Q4 		$1.97M Sell
93,732
-31,930
-25% -$825K 0.21% 91
2024
Q3 		$4.05M Buy
+125,662
New +$3.58M 0.42% 65

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 $3.37T AUM 44.26% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $10.7B AUM 67.78% 1-Year Est. Return

Tower Bridge Advisors's AMTM Position: Q2 2026 in Review

Tower Bridge Advisors reduced its Amentum Holdings (AMTM) stake by 6.8% in Q2 2026, selling an estimated $58.9K and leaving 33,261 shares worth $688K. The position accounts for 0.06% of the portfolio, ranked #150.

Tower Bridge Advisors first reported a position in AMTM in Q3 2024 and has held it in 8 quarters since. The position peaked at $4.05M in Q3 2024. 461 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Tower Bridge Advisors held 33,261 shares of Amentum Holdings worth $688K as of Q2 2026.
  • Tower Bridge Advisors sold 2,437 Amentum Holdings shares in Q2 2026, an estimated $58.9K.
  • Amentum Holdings made up 0.06% of Tower Bridge Advisors's portfolio in Q2 2026, its #150 holding.
  • Tower Bridge Advisors first reported a position in Amentum Holdings in Q3 2024 and has held it in 8 quarters since.
  • Tower Bridge Advisors's Amentum Holdings position peaked at $4.05M in Q3 2024.
  • 461 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Tower Bridge Advisors's 13F filing for Q2 2026, filed 12 Aug 2026.