Two Sigma Investments
AMTM

Two Sigma Investments’s Amentum Holdings AMTM Stock Holding History

Two Sigma Investments’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 		$23.5M Buy
900,177
+262,191
+41% +$8.23M 0.02% 860
2025
Q4 		$18.5M Buy
637,986
+238,863
+60% +$6.11M 0.03% 766
2025
Q3 		$9.56M Buy
399,123
+385,394
+2,807% +$9.38M 0.01% 983
2025
Q2 		$324K Sell
13,729
-40,371
-75% -$844K ﹤0.01% 2761
2025
Q1 		$985K Buy
+54,100
New +$1.1M ﹤0.01% 2184
2024
Q4 		– Sell
-321,096
Closed -$10.4M – 3550
2024
Q3 		$10.4M Buy
+321,096
New +$9.15M 0.02% 746

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

Two Sigma Investments's AMTM Position: Q1 2026 in Review

Two Sigma Investments increased its Amentum Holdings (AMTM) stake by 41% in Q1 2026, buying an estimated $8.23M and bringing the position to 900,177 shares worth $23.5M. The position accounts for 0.02% of the portfolio, ranked #860.

Two Sigma Investments first reported a position in AMTM in Q3 2024 and has held it in 6 quarters since. 486 funds tracked by Wall St. Rank hold AMTM as of Q1 2026.

  • Two Sigma Investments held 900,177 shares of Amentum Holdings worth $23.5M as of Q1 2026.
  • Two Sigma Investments bought 262,191 Amentum Holdings shares in Q1 2026, an estimated $8.23M.
  • Amentum Holdings made up 0.02% of Two Sigma Investments's portfolio in Q1 2026, its #860 holding.
  • Two Sigma Investments first reported a position in Amentum Holdings in Q3 2024 and has held it in 6 quarters since.
  • 486 funds tracked by Wall St. Rank held Amentum Holdings as of Q1 2026.

Based on Two Sigma Investments's 13F filing for Q1 2026, filed 15 May 2026.