SG Americas Securities
AMTM

SG Americas Securities’s Amentum Holdings AMTM Stock Holding History

SG Americas Securities’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 		$5.44M Sell
262,993
-11,609
-4% -$281K ﹤0.01% 1057
2026
Q1 		$7.16M Sell
274,602
-70,739
-20% -$2.22M 0.01% 905
2025
Q4 		$10M Buy
345,341
+316,277
+1,088% +$8.09M 0.01% 772
2025
Q3 		$696K Buy
29,064
+21,182
+269% +$516K ﹤0.01% 1811
2025
Q2 		$186K Buy
+7,882
New +$165K ﹤0.01% 2299

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 $3.38T AUM 44.17% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $10.7B AUM 67.78% 1-Year Est. Return

SG Americas Securities's AMTM Position: Q2 2026 in Review

SG Americas Securities reduced its Amentum Holdings (AMTM) stake by 4.2% in Q2 2026, selling an estimated $281K and leaving 262,993 shares worth $5.44M. The position accounts for ﹤0.01% of the portfolio, ranked #1057.

SG Americas Securities first reported a position in AMTM in Q2 2025 and has held it in 5 quarters since. The position peaked at $10M in Q4 2025. 464 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • SG Americas Securities held 262,993 shares of Amentum Holdings worth $5.44M as of Q2 2026.
  • SG Americas Securities sold 11,609 Amentum Holdings shares in Q2 2026, an estimated $281K.
  • Amentum Holdings made up ﹤0.01% of SG Americas Securities's portfolio in Q2 2026, its #1057 holding.
  • SG Americas Securities first reported a position in Amentum Holdings in Q2 2025 and has held it in 5 quarters since.
  • SG Americas Securities's Amentum Holdings position peaked at $10M in Q4 2025.
  • 464 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on SG Americas Securities's 13F filing for Q2 2026, filed 7 Aug 2026.