Company · Ownership research

AMKOR TECHNOLOGY, INC. AMKR

CIK 0001047127 · CUSIP 031652100

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 031652100 (AMKR), not CUSIP 031652950 (AMKR), CUSIP 031652900 (AMKR), and does not merge CUSIPs.

This page lists the top 20 of 455 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VANGUARD GROUP INC CIK 102909 · View history	$620.00M 15,704,172 shares	0.01%	-75.67K(-0.50%)Reduced	SEC filing ↗ Jan 29, 2026	▾
02	BlackRock, Inc. CIK 2012383 · View history	$510.20M 12,922,945 shares	0.01%	-911.87K(-6.60%)Reduced	SEC filing ↗ Feb 12, 2026	▾
03	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$504.29M 12,772,891 shares	0.11%	-378.32K(-2.90%)Reduced	SEC filing ↗ Feb 12, 2026	▾
04	EARNEST PARTNERS LLC CIK 1102578 · View history	$149.72M 3,792,424 shares	0.64%	-413.93K(-9.80%)Reduced	SEC filing ↗ Feb 12, 2026	▾
05	AMERICAN CENTURY COMPANIES INC CIK 748054 · View history	$141.22M 3,576,888 shares	0.07%	-259.10K(-6.80%)Reduced	SEC filing ↗ Feb 13, 2026	▾
06	STATE STREET CORP CIK 93751 · View history	$137.15M 3,473,925 shares	0.00%	+47.51K(+1.40%)Added	SEC filing ↗ Feb 13, 2026	▾
07	AQR CAPITAL MANAGEMENT LLC CIK 1167557 · View history	$130.28M 3,299,975 shares	0.07%	-911.55K(-21.60%)Reduced	SEC filing ↗ Feb 17, 2026	▾
08	Point72 Asset Management, L.P. CIK 1603466 · View history	$120.97M 3,064,101 shares	0.19%	+2.90M(+1,715.20%)Added	SEC filing ↗ Feb 17, 2026	▾
09	LSV ASSET MANAGEMENT CIK 1050470 · View history	$111.34M 2,820,062 shares	0.24%	-1.16M(-29.20%)Reduced	SEC filing ↗ Feb 6, 2026	▾
10	FIRST TRUST ADVISORS LP CIK 1125816 · View history	$107.48M 2,722,310 shares	0.08%	+740.70K(+37.40%)Added	SEC filing ↗ Feb 13, 2026	▾
11	DISCOVERY CAPITAL MANAGEMENT, LLC / CT CIK 1389507 · View history	$103.24M 2,614,934 shares	5.59%	+2.61MNew	SEC filing ↗ Feb 17, 2026	▾
12	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$88.14M 2,232,211 shares	0.01%	-47.22K(-2.10%)Reduced	SEC filing ↗ Feb 9, 2026	▾
13	PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · View history	$86.83M 2,199,115 shares	0.04%	-69.72K(-3.10%)Reduced	SEC filing ↗ Feb 2, 2026	▾
14	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history	$82.88M 2,099,349 shares	0.01%	-95.82K(-4.40%)Reduced	SEC filing ↗ Feb 13, 2026	▾
15	Fisher Asset Management, LLC CIK 850529 · View history	$82.71M 2,095,027 shares	0.03%	+1.41M(+204.50%)Added	SEC filing ↗ Feb 9, 2026	▾
16	MORGAN STANLEY CIK 895421 · Amended · View history	$71.33M 1,806,649 shares	0.00%	+340.26K(+23.20%)Added	SEC filing ↗ May 27, 2026	▾
17	SW Investment Management LLC CIK 1824821 · View history	$55.27M 1,400,000 shares	14.70%	-1.25M(-47.20%)Reduced	SEC filing ↗ Feb 17, 2026	▾
18	NORGES BANK CIK 1374170 · View history	$53.70M 1,360,226 shares	0.01%	+1.36MNew	SEC filing ↗ Feb 10, 2026	▾
19	UBS Group AG CIK 1610520 · View history	$49.53M 1,254,658 shares	0.01%	+843.98K(+205.50%)Added	SEC filing ↗ Jan 29, 2026	▾
20	Gotham Asset Management, LLC CIK 1510387 · View history	$47.09M 1,192,652 shares	0.17%	-221.07K(-15.60%)Reduced	SEC filing ↗ Feb 17, 2026	▾

Showing 20 / 455 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

455

Cancelled or null records excluded

Disclosed shares

113,629,222

Not deduplicated across managers

Disclosed value

$4.49B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

AMKOR TECHNOLOGY, INC. · Q4 2025

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.