CPG
AMTM

Cornerstone Planning Group’s Amentum Holdings AMTM Stock Holding History

Cornerstone Planning Group’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 		$129 Hold
6
– – ﹤0.01% 1823
2026
Q1 		$146 Hold
6
– – ﹤0.01% 1783
2025
Q4 		$214 Hold
6
– – ﹤0.01% 1629
2025
Q3 		$131 Hold
6
– – ﹤0.01% 1636
2025
Q2 		$152 Buy
+6
New +$125 ﹤0.01% 1472
2025
Q1 		– Sell
-14
Closed -$301 – 1703
2024
Q4 		$301 Hold
14
– – ﹤0.01% 1286
2024
Q3 		$431 Buy
+14
New +$399 ﹤0.01% 1119

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

Cornerstone Planning Group's AMTM Position: Q2 2026 in Review

Cornerstone Planning Group held its Amentum Holdings (AMTM) position steady in Q2 2026 at 6 shares worth $129. The position accounts for ﹤0.01% of the portfolio, ranked #1823.

Cornerstone Planning Group first reported a position in AMTM in Q3 2024 and has held it in 7 quarters since. The position peaked at $431 in Q3 2024. 462 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Cornerstone Planning Group held 6 shares of Amentum Holdings worth $129 as of Q2 2026.
  • Cornerstone Planning Group left its Amentum Holdings share count unchanged in Q2 2026.
  • Amentum Holdings made up ﹤0.01% of Cornerstone Planning Group's portfolio in Q2 2026, its #1823 holding.
  • Cornerstone Planning Group first reported a position in Amentum Holdings in Q3 2024 and has held it in 7 quarters since.
  • Cornerstone Planning Group's Amentum Holdings position peaked at $431 in Q3 2024.
  • 462 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Cornerstone Planning Group's 13F filing for Q2 2026, filed 29 Jul 2026.