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	$888K	Sell	10,300 -53,600	-84%	-$3.82M	0.02%	868
2026 Q1	$2.88M	Sell	63,900 -42,400	-40%	-$2.03M	0.06%	364
2025 Q4	$4.2M	Buy	106,300 +90,700	+581%	+$3.23M	0.04%	570
2025 Q3	$443K	Buy	+15,600	New	+$375K	﹤0.01%	1291
2025 Q1	–	Sell	-72,900	Closed	-$1.87M	–	1536
2024 Q4	$1.87M	Sell	72,900 -116,700	-62%	-$3.21M	﹤0.01%	1167
2024 Q3	$5.8M	Buy	189,600 +41,300	+28%	+$1.41M	0.01%	850
2024 Q2	$5.93M	Buy	148,300 +32,300	+28%	+$1.07M	0.01%	715
2024 Q1	$3.74M	Buy	116,000 +79,300	+216%	+$2.51M	0.01%	881
2023 Q4	$1.22M	Buy	+36,700	New	+$965K	﹤0.01%	1126

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. 646 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.
646 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.