PEAK6
AMTM

PEAK6’s Amentum Holdings AMTM Stock Holding History

PEAK6’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
Q1 		$1.55M Sell
59,500
-358,900
-86% -$11.3M ﹤0.01% 1507
2025
Q4 		$12.1M Buy
+418,400
New +$10.7M 0.02% 563
2025
Q3 		– Sell
-42,700
Closed -$1.01M – 3582
2025
Q2 		$1.01M Buy
+42,700
New +$892K ﹤0.01% 1806

Other funds holding AMTM

AS
American Securities New York $3.93B AUM 52.22% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $9.73B AUM 55.65% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

PEAK6's AMTM Position: Q1 2026 in Review

PEAK6 opened a new position in Amentum Holdings (AMTM) in Q1 2026: 2,783 shares worth $72.6K. The stake represents ﹤0.01% of the portfolio and ranks #2419 among its holdings.

486 funds tracked by Wall St. Rank hold AMTM as of Q1 2026.

  • PEAK6 held 2,783 shares of Amentum Holdings worth $72.6K as of Q1 2026.
  • Amentum Holdings was a new PEAK6 position in Q1 2026.
  • Amentum Holdings made up ﹤0.01% of PEAK6's portfolio in Q1 2026, its #2419 holding.
  • 486 funds tracked by Wall St. Rank held Amentum Holdings as of Q1 2026.

Based on PEAK6's 13F filing for Q1 2026, filed 14 May 2026.