BFM
AMTM

Boothbay Fund Management’s Amentum Holdings AMTM Stock Holding History

Boothbay Fund 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 		$8.02M Buy
387,973
+301,781
+350% +$7.3M 0.11% 210
2026
Q1 		$2.25M Buy
86,192
+78,978
+1,095% +$2.48M 0.03% 569
2025
Q4 		$209K Buy
+7,214
New +$184K ﹤0.01% 1643
2025
Q1 		– Sell
-11,250
Closed -$237K – 1857
2024
Q4 		$237K Buy
+11,250
New +$291K 0.01% 1150

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

Boothbay Fund Management's AMTM Position: Q2 2026 in Review

Boothbay Fund Management increased its Amentum Holdings (AMTM) stake by 350% in Q2 2026, buying an estimated $7.3M and bringing the position to 387,973 shares worth $8.02M. The position accounts for 0.11% of the portfolio, ranked #210.

Boothbay Fund Management first reported a position in AMTM in Q4 2024 and has held it in 4 quarters since. 460 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Boothbay Fund Management held 387,973 shares of Amentum Holdings worth $8.02M as of Q2 2026.
  • Boothbay Fund Management bought 301,781 Amentum Holdings shares in Q2 2026, an estimated $7.3M.
  • Amentum Holdings made up 0.11% of Boothbay Fund Management's portfolio in Q2 2026, its #210 holding.
  • Boothbay Fund Management first reported a position in Amentum Holdings in Q4 2024 and has held it in 4 quarters since.
  • 460 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Boothbay Fund Management's 13F filing for Q2 2026, filed 14 Aug 2026.