HCA
AMTM

Harbor Capital Advisors’s Amentum Holdings AMTM Stock Holding History

Harbor Capital 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
Q1 		– Sell
-169
Closed -$5K – 1517
2025
Q4 		$5K Sell
169
-1
-0.6% -$26 ﹤0.01% 1164
2025
Q3 		$4K Hold
170
– – ﹤0.01% 1232
2025
Q2 		$4K Buy
+170
New +$3.55K ﹤0.01% 1244
2025
Q1 		– Sell
-1,380
Closed -$29K – 1561
2024
Q4 		$29K Buy
1,380
+32
+2% +$827 ﹤0.01% 784
2024
Q3 		$43K Buy
+1,348
New +$38.4K ﹤0.01% 766

Other funds holding AMTM

AS
American Securities New York $3.93B AUM 52.22% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $9.73B AUM 55.65% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Harbor Capital Advisors's AMTM Position: Q1 2026 in Review

Harbor Capital Advisors sold out of Amentum Holdings (AMTM) in Q1 2026, closing a stake of 169 shares — an estimated $5K sold.

Harbor Capital Advisors first reported a position in AMTM in Q3 2024 and held it in 5 quarters. The position peaked at $43K in Q3 2024. 486 funds tracked by Wall St. Rank hold AMTM as of Q1 2026.

  • Harbor Capital Advisors reported no remaining Amentum Holdings position as of Q1 2026 after selling out during the quarter.
  • Harbor Capital Advisors sold 169 Amentum Holdings shares in Q1 2026, an estimated $5K.
  • Harbor Capital Advisors first reported a position in Amentum Holdings in Q3 2024 and held it in 5 quarters.
  • Harbor Capital Advisors's Amentum Holdings position peaked at $43K in Q3 2024.
  • 486 funds tracked by Wall St. Rank held Amentum Holdings as of Q1 2026.

Based on Harbor Capital Advisors's 13F filing for Q1 2026, filed 28 Apr 2026.