Natixis Advisors
AMTM

Natixis Advisors’s Amentum Holdings AMTM Stock Holding History

Natixis Advisors’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 		$998K Sell
48,328
-6,078
-11% -$147K ﹤0.01% 1485
2026
Q1 		$1.42M Sell
54,406
-3,187
-6% -$100K ﹤0.01% 1233
2025
Q4 		$1.67M Sell
57,593
-9,071
-14% -$232K ﹤0.01% 1104
2025
Q3 		$1.6M Sell
66,664
-413
-0.6% -$10.1K ﹤0.01% 1169
2025
Q2 		$1.58M Buy
67,077
+10,219
+18% +$214K ﹤0.01% 1159
2025
Q1 		$1.03M Buy
56,858
+33,686
+145% +$686K ﹤0.01% 1265
2024
Q4 		$487K Sell
23,172
-177,493
-88% -$4.59M ﹤0.01% 1477
2024
Q3 		$6.47M Buy
+200,665
New +$5.72M 0.01% 768

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

Natixis Advisors's AMTM Position: Q2 2026 in Review

Natixis Advisors reduced its Amentum Holdings (AMTM) stake by 11% in Q2 2026, selling an estimated $147K and leaving 48,328 shares worth $998K. The position accounts for ﹤0.01% of the portfolio, ranked #1485.

Natixis Advisors first reported a position in AMTM in Q3 2024 and has held it in 8 quarters since. The position peaked at $6.47M in Q3 2024. 461 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Natixis Advisors held 48,328 shares of Amentum Holdings worth $998K as of Q2 2026.
  • Natixis Advisors sold 6,078 Amentum Holdings shares in Q2 2026, an estimated $147K.
  • Amentum Holdings made up ﹤0.01% of Natixis Advisors's portfolio in Q2 2026, its #1485 holding.
  • Natixis Advisors first reported a position in Amentum Holdings in Q3 2024 and has held it in 8 quarters since.
  • Natixis Advisors's Amentum Holdings position peaked at $6.47M in Q3 2024.
  • 461 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Natixis Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.