Mariner
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Mariner’s Amkor Technology AMKR Stock Holding History

Mariner’s Portfolio AMKR Stock Details AMKR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$8.06M Buy
93,487
+30,231
+48% +$2.15M 0.01% 829
2026
Q1 		$2.85M Buy
63,256
+22,358
+55% +$1.07M ﹤0.01% 1332
2025
Q4 		$1.61M Sell
40,898
-57,002
-58% -$2.03M ﹤0.01% 1629
2025
Q3 		$2.78M Buy
97,900
+17,722
+22% +$427K ﹤0.01% 1231
2025
Q2 		$1.68M Buy
80,178
+43,728
+120% +$807K ﹤0.01% 1455
2025
Q1 		$658K Buy
36,450
+8,583
+31% +$194K ﹤0.01% 1976
2024
Q4 		$716K Sell
27,867
-2,679
-9% -$73.7K ﹤0.01% 1888
2024
Q3 		$935K Buy
30,546
+10,219
+50% +$348K ﹤0.01% 1660
2024
Q2 		$813K Sell
20,327
-174
-0.8% -$5.76K ﹤0.01% 1658
2024
Q1 		$661K Buy
20,501
+930
+5% +$29.5K ﹤0.01% 1821
2023
Q4 		$651K Buy
19,571
+9,104
+87% +$239K ﹤0.01% 1763
2023
Q3 		$237K Sell
10,467
-8,127
-44% -$214K ﹤0.01% 2369
2023
Q2 		$553K Sell
18,594
-1,025
-5% -$24.9K ﹤0.01% 1669
2023
Q1 		$511K Sell
19,619
-40
-0.2% -$1.09K ﹤0.01% 1677
2022
Q4 		$472K Buy
+19,659
New +$456K ﹤0.01% 1680

Other funds holding AMKR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
EARNEST Partners
EARNEST Partners Atlanta, Georgia $27.7B AUM 52.44% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Mariner's AMKR Position: Q2 2026 in Review

Mariner increased its Amkor Technology (AMKR) stake by 48% in Q2 2026, buying an estimated $2.15M and bringing the position to 93,487 shares worth $8.06M. The position accounts for 0.01% of the portfolio, ranked #829.

Mariner first reported a position in AMKR in Q4 2022 and has held it in 15 quarters since. 646 funds tracked by Wall St. Rank hold AMKR as of Q2 2026.

  • Mariner held 93,487 shares of Amkor Technology worth $8.06M as of Q2 2026.
  • Mariner bought 30,231 Amkor Technology shares in Q2 2026, an estimated $2.15M.
  • Amkor Technology made up 0.01% of Mariner's portfolio in Q2 2026, its #829 holding.
  • Mariner first reported a position in Amkor Technology in Q4 2022 and has held it in 15 quarters since.
  • 646 funds tracked by Wall St. Rank held Amkor Technology as of Q2 2026.

Based on Mariner's 13F filing for Q2 2026, filed 13 Aug 2026.