Tower Bridge Advisors
AMTM icon

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
Q3 		$592K Sell
32,671
-590
-2% -$12.4K 0.05% 158
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

Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
Thompson Siegel & Walmsley
Thompson Siegel & Walmsley Richmond, Virginia $5.37B AUM 3.99% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $765B AUM 28.39% 1-Year Est. Return
Cacti Asset Management
Cacti Asset Management Atlanta, Georgia $1.89B AUM 58.55% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return
River Road Asset Management
River Road Asset Management Louisville, Kentucky $8.42B AUM 5.65% 1-Year Est. Return
Segra Capital Management
Segra Capital Management Palm Beach, Florida $822M AUM 57.18% 1-Year Est. Return
Principal Financial Group
Principal Financial Group Des Moines, Iowa $195B AUM 21.17% 1-Year Est. Return

Tower Bridge Advisors's AMTM Position: Q3 2026 in Review

Tower Bridge Advisors reduced its Amentum Holdings (AMTM) stake by 1.8% in Q3 2026, selling an estimated $12.4K and leaving 32,671 shares worth $592K. The position accounts for 0.05% of the portfolio, ranked #158.

Tower Bridge Advisors first reported a position in AMTM in Q3 2024 and has held it in 9 quarters since. The position peaked at $4.05M in Q3 2024. 252 funds tracked by Wall St. Rank hold AMTM as of Q3 2026.

  • Tower Bridge Advisors held 32,671 shares of Amentum Holdings worth $592K as of Q3 2026.
  • Tower Bridge Advisors sold 590 Amentum Holdings shares in Q3 2026, an estimated $12.4K.
  • Amentum Holdings made up 0.05% of Tower Bridge Advisors's portfolio in Q3 2026, its #158 holding.
  • Tower Bridge Advisors first reported a position in Amentum Holdings in Q3 2024 and has held it in 9 quarters since.
  • Tower Bridge Advisors's Amentum Holdings position peaked at $4.05M in Q3 2024.
  • 252 funds tracked by Wall St. Rank held Amentum Holdings as of Q3 2026.

Based on Tower Bridge Advisors's 13F filing for Q3 2026, filed 10 Nov 2026.