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 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 $5.72T AUM 30.48% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

EARNEST Partners Atlanta, Georgia $24.3B AUM 34.41% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return

Point72 Asset Management Stamford, Connecticut $78.1B AUM 55.25% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Twin Tree Management's AMKR Position: Q1 2026 in Review

Twin Tree Management reduced its Amkor Technology (AMKR) stake by 85% in Q1 2026, selling an estimated $4.76M and leaving 17,917 shares worth $807K. The position accounts for 0.02% of the portfolio, ranked #808.

Twin Tree Management first reported a position in AMKR in Q1 2021 and has held it in 14 quarters since. The position peaked at $4.63M in Q4 2025. 527 funds tracked by Wall St. Rank hold AMKR as of Q1 2026.

Twin Tree Management held 17,917 shares of Amkor Technology worth $807K as of Q1 2026.
Twin Tree Management sold 99,444 Amkor Technology shares in Q1 2026, an estimated $4.76M.
Amkor Technology made up 0.02% of Twin Tree Management's portfolio in Q1 2026, its #808 holding.
Twin Tree Management first reported a position in Amkor Technology in Q1 2021 and has held it in 14 quarters since.
Twin Tree Management's Amkor Technology position peaked at $4.63M in Q4 2025.
527 funds tracked by Wall St. Rank held Amkor Technology as of Q1 2026.

Based on Twin Tree Management's 13F filing for Q1 2026, filed 14 May 2026.