PMAM
AMTM

Picton Mahoney Asset Management’s Amentum Holdings AMTM Stock Holding History

Picton Mahoney 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 		$4.96K Sell
240
-26,995
-99% -$653K ﹤0.01% 1210
2026
Q1 		$710K Buy
27,235
+27,227
+340,338% +$854K 0.01% 722
2025
Q4 		$232 Hold
8
– – ﹤0.01% 1194
2025
Q3 		$0 Hold
8
– – ﹤0.01% 1237
2025
Q2 		$0 Hold
8
– – ﹤0.01% 1204
2025
Q1 		$0 Hold
8
– – ﹤0.01% 1039
2024
Q4 		$0 Sell
8
-2,598
-100% -$67.2K ﹤0.01% 953
2024
Q3 		$84K Buy
+2,606
New +$74.2K ﹤0.01% 358

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

Picton Mahoney Asset Management's AMTM Position: Q2 2026 in Review

Picton Mahoney Asset Management reduced its Amentum Holdings (AMTM) stake by 99% in Q2 2026, selling an estimated $653K and leaving 240 shares worth $4.96K. The position accounts for ﹤0.01% of the portfolio, ranked #1210.

Picton Mahoney Asset Management first reported a position in AMTM in Q3 2024 and has held it in 8 quarters since. The position peaked at $710K in Q1 2026. 458 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Picton Mahoney Asset Management held 240 shares of Amentum Holdings worth $4.96K as of Q2 2026.
  • Picton Mahoney Asset Management sold 26,995 Amentum Holdings shares in Q2 2026, an estimated $653K.
  • Amentum Holdings made up ﹤0.01% of Picton Mahoney Asset Management's portfolio in Q2 2026, its #1210 holding.
  • Picton Mahoney Asset Management first reported a position in Amentum Holdings in Q3 2024 and has held it in 8 quarters since.
  • Picton Mahoney Asset Management's Amentum Holdings position peaked at $710K in Q1 2026.
  • 458 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

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