Amkor Technology, Inc.

AMKR

Exchange: Nasdaq
Industry: Semiconductors & Related Devices
SEC CIK: 0001047127

SEC filings (opens in a new tab)

In the last 90 days, Amkor Technology, Inc. insiders filed 0 open-market purchases and 8 sales; 648 institutions reported holding it in 13F filings for Q2 2026, worth $9.95B in total; Maverick Capital is the only superinvestor holding it.

13F holders, Q3 2026

Institutional positions in Amkor Technology, Inc. as of Sep 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.

Institutional holders: 7; +1 vs. Q2 2026
Shares held: 26.0K; −850 (−3.2%) vs. Q2 2026
Total value: $1.36M; −$952.7K (−41.2%) vs. Q2 2026
New holders: 1; 3 more added
Sold out: 0; 2 more reduced

642 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2026: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting AMKR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holders

Value held

Institutions holding AMKR and their total value by quarter
Quarter	Holders	Value
Q2 2026	648	$9.95B
Q1 2026	533	$5.44B
Q4 2025	455	$4.49B
Q3 2025	383	$3.06B
Q2 2025	348	$2.37B
Q1 2025	347	$1.96B
Q4 2024	335	$2.81B
Q3 2024	359	$3.27B
Q2 2024	395	$4.22B
Q1 2024	338	$3.43B
Q4 2023	317	$3.50B
Q3 2023	305	$2.33B
Q2 2023	300	$2.86B
Q1 2023	294	$2.45B
Q4 2022	294	$2.27B
Q3 2022	274	$1.61B
Q2 2022	266	$1.61B
Q1 2022	281	$2.05B
Q4 2021	273	$2.33B
Q3 2021	269	$2.35B
Q2 2021	256	$2.22B
Q1 2021	255	$2.28B

Institutions, Q3 2026

Shares, value and share of portfolio for each institution holding Amkor Technology, Inc.; share changes are against Q2 2026.

Institutions holding AMKR in Q3 2026
Institution	Shares	Value	% of portfolio	Change in shares	Action
Larson Financial Group LLC	–	–	–	–	Not filed
Covestor Ltd	–	–	–	–	Not filed
Northwestern Mutual Wealth Management Co	–	–	–	–	Not filed
SBI Securities Co., Ltd.	–	–	–	–	Not filed
Nkcfo LLC	–	–	–	–	Not filed
Harbour Investments, Inc.	–	–	–	–	Not filed
Pinnacle Wealth Planning Services, Inc.	–	–	–	–	Not filed
Umb Bank N A	–	–	–	–	Not filed
Hurley Capital, LLC	–	–	–	–	Not filed
Essex Investment Management Co LLC	–	–	–	–	Not filed
Hollencrest Capital Management	–	–	–	–	Not filed
Rakuten Securities, Inc.	–	–	–	–	Not filed
Bessemer Group Inc	–	–	–	–	Not filed
Ares Systematic Credit Ltd	–	–	–	–	Not filed
TD Waterhouse Canada Inc.	–	–	–	–	Not filed
Clear Street Markets LLC	–	–	–	–	Not filed
Cullen/Frost Bankers, Inc.	–	–	–	–	Not filed
C M Bidwell & Associates Ltd	–	–	–	–	Not filed
IFP Advisors, Inc	–	–	–	–	Not filed
Fortitude Family Office, LLC	–	–	–	–	Not filed
Palouse Capital Management, Inc.	–	–	–	–	Not filed
Nomura Asset Management Co Ltd	–	–	–	–	Not filed
Brown Brothers Harriman & Co	–	–	–	–	Not filed
Ronald Blue Trust, Inc.	–	–	–	–	Not filed
Owl Creek Wealth Partners LLC	–	–	–	–	Not filed
Bayforest Capital Ltd	–	–	–	–	Not filed
Smartleaf Asset Management LLC	–	–	–	–	Not filed
Crews Bank & Trust	–	–	–	–	Not filed
Macquarie Group Ltd	–	–	–	–	Not filed
CVA Family Office, LLC	–	–	–	–	Not filed
Thurston, Springer, Miller, Herd & Titak, Inc.	–	–	–	–	Not filed
Solstein Capital, LLC	–	–	–	–	Not filed
Ceredex Value Advisors LLC	–	–	–	–	Not filed
Clearstead Advisors, LLC	–	–	–	–	Not filed
Atlantic Trust, LLC	–	–	–	–	Not filed
Ramirez Asset Management, Inc.	–	–	–	–	Not filed
Bayban	–	–	–	–	Not filed
MCF Advisors LLC	–	–	–	–	Not filed
CoreCap Advisors, LLC	–	–	–	–	Not filed
Salomon & Ludwin, LLC	–	–	–	–	Not filed
Quent Capital, LLC	–	–	–	–	Not filed
Parkside Financial Bank & Trust	–	–	–	–	Not filed
True Wealth Design, LLC	–	–	–	–	Not filed
Whittier Trust Co	–	–	–	–	Not filed
Whittier Trust Co of Nevada Inc	–	–	–	–	Not filed
Armstrong Advisory Group, Inc	–	–	–	–	Not filed
JFS Wealth Advisors, LLC	–	–	–	–	Not filed
Wealth Enhancement Trust Services, Inc.	–	–	–	–	Not filed
Elequin Capital LP	–	–	–	–	Not filed
First Horizon Corp	–	–	–	–	Not filed
Keating Financial Advisory Services, Inc.	–	–	–	–	Not filed
WealthCollab, LLC	–	–	–	–	Not filed
Geneos Wealth Management Inc.	–	–	–	–	Not filed
Aspect Partners, LLC	–	–	–	–	Not filed
Basecamp Wealth Advisors LLC	–	–	–	–	Not filed
AdvisorNet Financial, Inc	–	–	–	–	Not filed
Transce3nd, LLC	–	–	–	–	Not filed
Eurizon Capital SGR S.p.A.	–	–	–	–	Not filed
Picton Mahoney Asset Management	–	–	–	–	Not filed
Action Point Financial Planning, LLC	–	–	–	–	Not filed
Adirondack Trust Co	–	–	–	–	Not filed
Bell Investment Advisors, Inc	–	–	–	–	Not filed
Rialto Wealth Management, LLC	–	–	–	–	Not filed
Transamerica Financial Advisors, Inc.	–	–	–	–	Not filed
Zions Bancorporation, National Association	–	–	–	–	Not filed
Buck Wealth Strategies, LLC	–	–	–	–	Not filed
MV Capital Management, Inc.	–	–	–	–	Not filed
Sachetta, LLC	–	–	–	–	Not filed
Bruce G. Allen Investments, LLC	–	–	–	–	Not filed
Rossby Financial, LCC	–	–	–	–	Not filed
Danske Bank A/S	–	–	–	–	Not filed
Farmers & Merchants Investments Inc	–	–	–	–	Not filed
Mark Sheptoff Financial Planning, LLC	–	–	–	–	Not filed
SJS Investment Consulting Inc.	–	–	–	–	Not filed
Silver Grove Financial Group, Inc.	–	–	–	–	Not filed
Private Wealth Management Group, LLC	–	–	–	–	Not filed
Torren Management, LLC	–	–	–	–	Not filed
Creative Capital Management Investments LLC	–	–	–	–	Not filed
McMillan Office, Inc.	–	–	–	–	Not filed
Bogart Wealth, LLC	–	–	–	–	Not filed
Central Trust Co	–	–	–	–	Not filed
SOA Wealth Advisors, LLC.	–	–	–	–	Not filed
William B. Walkup & Associates, Inc.	–	–	–	–	Not filed
Gleason Group, Inc.	–	–	–	–	Not filed
TD Capital Management LLC	–	–	–	–	Not filed
Salem Investment Counselors Inc	–	–	–	–	Not filed
Kilter Group LLC	–	–	–	–	Not filed
DiNuzzo Private Wealth, Inc.	–	–	–	–	Not filed
Bay Harbor Wealth Management, LLC	–	–	–	–	Not filed
JDM Financial Group LLC	–	–	–	–	Not filed
Washington Trust Advisors, Inc.	–	–	–	–	Not filed
SWAN Capital LLC	–	–	–	–	Not filed
JNBA Financial Advisors	–	–	–	–	Not filed
UMA Financial Services, Inc.	–	–	–	–	Not filed
Sunrise Financial Services, LLC	–	–	–	–	Not filed
Cape Investment Advisory, Inc.	–	–	–	–	Not filed
Huntington National Bank	–	–	–	–	Not filed
Silicon Valley Capital Partners	–	–	–	–	Not filed
ZRC Wealth Management, LLC	–	–	–	–	Not filed
HFM Investment Advisors, LLC	–	–	–	–	Not filed