WA
AMTM

Whipplewood Advisors’s Amentum Holdings AMTM Stock Holding History

Whipplewood 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 		$124 Sell
6
-8
-57% -$193 ﹤0.01% 632
2026
Q1 		$365 Buy
14
+7
+100% +$220 ﹤0.01% 999
2025
Q4 		$203 Buy
+7
New +$179 ﹤0.01% 493
2025
Q3 		– Sell
-21
Closed -$496 – 1202
2025
Q2 		$496 Buy
21
+17
+425% +$355 ﹤0.01% 1120
2025
Q1 		$382 Sell
4
-17
-81% -$346 ﹤0.01% 1151
2024
Q4 		$442 Buy
+21
New +$543 ﹤0.01% 1128

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

Whipplewood Advisors's AMTM Position: Q2 2026 in Review

Whipplewood Advisors reduced its Amentum Holdings (AMTM) stake by 57% in Q2 2026, selling an estimated $193 and leaving 6 shares worth $124. The position accounts for ﹤0.01% of the portfolio, ranked #632.

Whipplewood Advisors first reported a position in AMTM in Q4 2024 and has held it in 6 quarters since. The position peaked at $496 in Q2 2025. 464 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Whipplewood Advisors held 6 shares of Amentum Holdings worth $124 as of Q2 2026.
  • Whipplewood Advisors sold 8 Amentum Holdings shares in Q2 2026, an estimated $193.
  • Amentum Holdings made up ﹤0.01% of Whipplewood Advisors's portfolio in Q2 2026, its #632 holding.
  • Whipplewood Advisors first reported a position in Amentum Holdings in Q4 2024 and has held it in 6 quarters since.
  • Whipplewood Advisors's Amentum Holdings position peaked at $496 in Q2 2025.
  • 464 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Whipplewood Advisors's 13F filing for Q2 2026, filed 27 Jul 2026.