Thomas Steyer’s Amkor Technology AMKR Stock Holding History

Thomas Steyer’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	–	Sell	-104,000	Closed	-$4.68M	–	95
2026 Q1	$4.68M	Sell	104,000 -360,000	-78%	-$17.2M	0.02%	89
2025 Q4	$18.3M	Buy	+464,000	New	+$16.5M	0.08%	69

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

Thomas Steyer's AMKR Position: Q2 2026 in Review

Thomas Steyer sold out of Amkor Technology (AMKR) in Q2 2026, closing a stake of 104,000 shares — an estimated $4.68M sold.

Thomas Steyer first reported a position in AMKR in Q4 2025 and held it in 2 quarters. The position peaked at $18.3M in Q4 2025. 642 funds tracked by Wall St. Rank hold AMKR as of Q2 2026.

Thomas Steyer reported no remaining Amkor Technology position as of Q2 2026 after selling out during the quarter.
Thomas Steyer sold 104,000 Amkor Technology shares in Q2 2026, an estimated $4.68M.
Thomas Steyer first reported a position in Amkor Technology in Q4 2025 and held it in 2 quarters.
Thomas Steyer's Amkor Technology position peaked at $18.3M in Q4 2025.
642 funds tracked by Wall St. Rank held Amkor Technology as of Q2 2026.

Based on Farallon Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.