STATE OF WISCONSIN INVESTMENT BOARD

Position in AMKR — Amkor Technology, Inc.

CIK 854157 MADISON, WI

Back to AMKR Full portfolio

Position in AMKR

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$1,428,486

-$191,333 QoQ

Shares Held

16,566

-53.9% QoQ

Ownership

0.007%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#263

of 642 holders

Holding Since

Sep 2020

23 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Common Shares in AMKR Over Time

Shares Held

Position Value (USD)

Position in Semiconductor Equipment & Materials

Technology · as of Jun 30, 2026

STATE OF WISCONSIN INVESTMENT BOARD holds $960,316,456 across 23 Semiconductor Equipment & Materials names. AMKR ranks #18 (0.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	AMAT	Applied Materials Inc /De	423,289	$306,037,947
2	LRCX	Lam Research Corp	686,377	$297,427,745
3	KLAC	Kla Corp	699,073	$210,917,314
4	TER	Teradyne, Inc	96,209	$46,549,762
5	ONTO	Onto Innovation Inc.	55,298	$20,927,528
6	Q	Qnity Electronics, Inc.	111,564	$18,219,516
7	ENTG	Entegris Inc	78,983	$14,205,882
8	COHU	Cohu Inc	105,772	$7,817,608

All Filings in AMKR

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23 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$1,428,486	16,566	-53.9%	Shares	Sole	2026-08-14
2026-03-31	$1,619,819	35,972	+426.2%	Shares	Sole	2026-05-15
2025-12-31	$269,885	6,836	-93.5%	Shares	Sole	2026-02-17
2025-09-30	$2,993,587	105,408	-0.0%	Shares	Sole	2025-11-14
2025-06-30	$2,213,458	105,453	+18.3%	Shares	Sole	2025-08-14
2025-03-31	$1,609,272	89,107	-0.5%	Shares	Sole	2025-05-15
2024-12-31	$2,299,614	89,514	-20.0%	Shares	Sole	2025-02-14
2024-09-30	$3,422,640	111,851	-28.8%	Shares	Sole	2024-11-14
2024-06-30	$6,287,302	157,104	+42.7%	Shares	Sole	2024-08-14
2024-03-31	$3,548,785	110,074	+151.4%	Shares	Sole	2024-05-14
2023-12-31	$1,456,993	43,793	+252.9%	Shares	Sole	2024-02-12
2023-09-30	$280,466	12,410	+42.0%	Shares	Sole	2023-11-14
2023-06-30	$259,955	8,738	-37.1%	Shares	Sole	2023-08-14
2023-03-31	$361,261	13,884	+1.1%	Shares	Sole	2023-05-15
2022-12-31	$329,365	13,735	-33.1%	Shares	Sole	2023-02-14
2022-09-30	$349,934	20,524	-25.5%	Shares	Sole	2022-11-14
2022-06-30	$467,091	27,557	+92.7%	Shares	Sole	2022-08-15
2021-12-31	$354,497	14,300	+27.7%	Shares	Sole	2022-02-11
2021-09-30	$279,440	11,200	-24.8%	Shares	Sole	2021-11-12
2021-06-30	$352,683	14,900	0.0%	Shares	Sole	2021-08-12
2021-03-31	$353,279	14,900	-8.0%	Shares	Sole	2021-05-17
2020-12-31	$244,296	16,200	-43.9%	Shares	Sole	2021-02-03
2020-09-30	$323,680	28,900	—	Shares	Sole	2020-11-16
No filing history on record for this holder in this stock.