Twin Tree Management’s Amkor Technology AMKR Stock Holding History

Twin Tree Management’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	$1.14M	Sell	13,202 -4,715	-26%	-$336K	0.02%	785
2026 Q1	$807K	Sell	17,917 -99,444	-85%	-$4.76M	0.02%	808
2025 Q4	$4.63M	Buy	117,361 +34,475	+42%	+$1.23M	0.04%	533
2025 Q3	$2.35M	Buy	82,886 +2,706	+3%	+$65.1K	0.01%	1000
2025 Q2	$1.68M	Buy	80,180 +36,969	+86%	+$682K	﹤0.01%	1288
2025 Q1	$780K	Buy	43,211 +37,457	+651%	+$846K	﹤0.01%	1298
2024 Q4	$148K	Sell	5,754 -56,800	-91%	-$1.56M	﹤0.01%	1404
2024 Q3	$1.91M	Buy	+62,554	New	+$2.13M	﹤0.01%	1134
2024 Q2	–	Sell	-19,690	Closed	-$652K	–	1326
2024 Q1	$635K	Buy	19,690 +19,488	+9,648%	+$618K	﹤0.01%	1096
2023 Q4	$6.72K	Buy	+202	New	+$5.31K	﹤0.01%	1325
2023 Q3	–	Sell	-16,341	Closed	-$486K	–	1207
2023 Q2	$486K	Buy	16,341 +11,924	+270%	+$290K	﹤0.01%	1060
2023 Q1	$115K	Buy	+4,417	New	+$121K	﹤0.01%	1143
2022 Q1	–	Sell	-2,803	Closed	-$69K	–	1599
2021 Q4	$69K	Sell	2,803 -46,664	-94%	-$1.09M	﹤0.01%	1477
2021 Q3	$1.23M	Buy	+49,467	New	+$1.26M	﹤0.01%	1143
2021 Q2	–	Sell	-725	Closed	-$17K	–	1309
2021 Q1	$17K	Buy	+725	New	+$14.8K	﹤0.01%	1251

Other funds holding AMKR

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

EARNEST Partners Atlanta, Georgia $27.7B AUM 52.44% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Twin Tree Management's AMKR Position: Q2 2026 in Review

Twin Tree Management reduced its Amkor Technology (AMKR) stake by 26% in Q2 2026, selling an estimated $336K and leaving 13,202 shares worth $1.14M. The position accounts for 0.02% of the portfolio, ranked #785.

Twin Tree Management first reported a position in AMKR in Q1 2021 and has held it in 15 quarters since. The position peaked at $4.63M in Q4 2025. 645 funds tracked by Wall St. Rank hold AMKR as of Q2 2026.

Twin Tree Management held 13,202 shares of Amkor Technology worth $1.14M as of Q2 2026.
Twin Tree Management sold 4,715 Amkor Technology shares in Q2 2026, an estimated $336K.
Amkor Technology made up 0.02% of Twin Tree Management's portfolio in Q2 2026, its #785 holding.
Twin Tree Management first reported a position in Amkor Technology in Q1 2021 and has held it in 15 quarters since.
Twin Tree Management's Amkor Technology position peaked at $4.63M in Q4 2025.
645 funds tracked by Wall St. Rank held Amkor Technology as of Q2 2026.

Based on Twin Tree Management's 13F filing for Q2 2026, filed 12 Aug 2026.