QL
AMTM

Quarry LP’s Amentum Holdings AMTM Stock Holding History

Quarry LP’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 		$2.87K Sell
139
-2,411
-95% -$58.3K ﹤0.01% 1399
2026
Q1 		$66.5K Buy
2,550
+487
+24% +$15.3K 0.01% 602
2025
Q4 		$59.8K Buy
2,063
+1,397
+210% +$35.7K 0.01% 605
2025
Q3 		$16K Sell
666
-3,671
-85% -$89.4K ﹤0.01% 1515
2025
Q2 		$102K Buy
4,337
+2,667
+160% +$55.7K 0.02% 552
2025
Q1 		$30.4K Buy
+1,670
New +$34K 0.01% 993
2024
Q4 		– Sell
-265
Closed -$8.55K – 2070
2024
Q3 		$8.55K Buy
+265
New +$7.55K ﹤0.01% 1321

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

Quarry LP's AMTM Position: Q2 2026 in Review

Quarry LP reduced its Amentum Holdings (AMTM) stake by 95% in Q2 2026, selling an estimated $58.3K and leaving 139 shares worth $2.87K. The position accounts for ﹤0.01% of the portfolio, ranked #1399.

Quarry LP first reported a position in AMTM in Q3 2024 and has held it in 7 quarters since. The position peaked at $102K in Q2 2025. 462 funds tracked by Wall St. Rank hold AMTM as of Q2 2026.

  • Quarry LP held 139 shares of Amentum Holdings worth $2.87K as of Q2 2026.
  • Quarry LP sold 2,411 Amentum Holdings shares in Q2 2026, an estimated $58.3K.
  • Amentum Holdings made up ﹤0.01% of Quarry LP's portfolio in Q2 2026, its #1399 holding.
  • Quarry LP first reported a position in Amentum Holdings in Q3 2024 and has held it in 7 quarters since.
  • Quarry LP's Amentum Holdings position peaked at $102K in Q2 2025.
  • 462 funds tracked by Wall St. Rank held Amentum Holdings as of Q2 2026.

Based on Quarry LP's 13F filing for Q2 2026, filed 14 Aug 2026.