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Amkor Technology, Inc.

AMKR
Exchange
Nasdaq
Industry
Semiconductors & Related Devices
SEC CIK
0001047127

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, Q4 2021

Institutional positions in Amkor Technology, Inc. as of Dec 31, 2021. 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

Institutional holders
273
+6 vs. Q3 2021
Shares held
94.3M
+217.3K (+0.2%) vs. Q3 2021
Total value
$2.33B
−$15.0M (−0.6%) vs. Q3 2021
New holders
47
98 more added
Sold out
41
87 more reduced

2 institutions that held it in Q3 2021 haven't filed for Q4 2021 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q3 2021: 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 holdersQ4 2021: 273 institutions
Q1 2021: 255 institutionsQ2 2021: 256 institutionsQ3 2021: 269 institutionsQ4 2021: 273 institutionsQ1 2022: 281 institutionsQ2 2022: 266 institutionsQ3 2022: 274 institutionsQ4 2022: 294 institutionsQ1 2023: 294 institutionsQ2 2023: 300 institutionsQ3 2023: 305 institutionsQ4 2023: 317 institutionsQ1 2024: 338 institutionsQ2 2024: 395 institutionsQ3 2024: 359 institutionsQ4 2024: 335 institutionsQ1 2025: 347 institutionsQ2 2025: 348 institutionsQ3 2025: 383 institutionsQ4 2025: 455 institutionsQ1 2026: 533 institutionsQ2 2026: 648 institutions
Value heldQ4 2021: $2.33B
Q1 2021: $2.28BQ2 2021: $2.22BQ3 2021: $2.35BQ4 2021: $2.33BQ1 2022: $2.05BQ2 2022: $1.61BQ3 2022: $1.61BQ4 2022: $2.27BQ1 2023: $2.45BQ2 2023: $2.86BQ3 2023: $2.33BQ4 2023: $3.50BQ1 2024: $3.43BQ2 2024: $4.22BQ3 2024: $3.27BQ4 2024: $2.81BQ1 2025: $1.96BQ2 2025: $2.37BQ3 2025: $3.06BQ4 2025: $4.49BQ1 2026: $5.44BQ2 2026: $9.95B
Institutions holding AMKR and their total value by quarter
QuarterHoldersValue
Q2 2026648$9.95B
Q1 2026533$5.44B
Q4 2025455$4.49B
Q3 2025383$3.06B
Q2 2025348$2.37B
Q1 2025347$1.96B
Q4 2024335$2.81B
Q3 2024359$3.27B
Q2 2024395$4.22B
Q1 2024338$3.43B
Q4 2023317$3.50B
Q3 2023305$2.33B
Q2 2023300$2.86B
Q1 2023294$2.45B
Q4 2022294$2.27B
Q3 2022274$1.61B
Q2 2022266$1.61B
Q1 2022281$2.05B
Q4 2021273$2.33B
Q3 2021269$2.35B
Q2 2021256$2.22B
Q1 2021255$2.28B

Institutions, Q4 2021

Shares, value and share of portfolio for each institution holding Amkor Technology, Inc.; share changes are against Q3 2021.

Institutions holding AMKR in Q4 2021
InstitutionSharesValue% of portfolioChange in sharesAction
HRT Financial LP87,669$2.17M0.01%+87,669New
Mutual of America Capital Management LLC89,682$2.22M0.02%+1,270+1.4%Added
Vident Investment Advisory, LLC94,361$2.34M0.06%+3,741+4.1%Added
SG Americas Securities, LLC96,855$2.40M0.02%+3,734+4.0%Added
SEI Investments Co98,422$2.43M0.00%−3,087−3.0%Reduced
Commonwealth Equity Services, LLC100,344$2.49M0.01%+6,538+7.0%Added
Macquarie Group Ltd104,255$2.58M0.00%00.0%Unchanged
UBS Group AG108,526$2.69M0.00%+97,931+924.3%Added
BNP Paribas Arbitrage, SA108,948$2.70M0.01%+93,287+595.7%Added
State of New Jersey Common Pension Fund D111,189$2.76M0.01%+3,286+3.0%Added
Credit Suisse AG111,180$2.76M0.00%+4,654+4.4%Added
Citadel Advisors LLC114,451$2.84M0.00%+66,283+137.6%Added
O'Shaughnessy Asset Management, LLC117,967$2.92M0.05%−17,678−13.0%Reduced
State Board of Administration of Florida Retirement System119,017$2.95M0.01%+4,642+4.1%Added
Citigroup Inc119,001$2.95M0.00%+33,159+38.6%Added
Soros Capital Management LLC122,403$3.03M0.83%−423,790−77.6%Reduced
Bridgeway Capital Management, LLC127,500$3.16M0.06%00.0%Unchanged
Envestnet Asset Management Inc127,786$3.17M0.00%+40,550+46.5%Added
Retirement Systems of Alabama131,282$3.25M0.01%+1,566+1.2%Added
Alberta Investment Management Corp143,636$3.56M0.02%00.0%Unchanged
California State Teachers Retirement System148,227$3.67M0.00%+3,150+2.2%Added
Barclays PLC148,634$3.69M0.00%−431−0.3%Reduced
Mirae Asset Global Investments Co., Ltd.153,462$3.80M0.01%+63,554+70.7%Added
UBS Asset Management Americas Inc154,662$3.83M0.00%−4,600−2.9%Reduced
Legal & General Group Plc154,738$3.84M0.00%+844+0.5%Added
Mondrian Investment Partners LTD164,343$4.07M0.08%00.0%Unchanged
Manufacturers Life Insurance Company, The165,159$4.09M0.00%−2,901−1.7%Reduced
Massachusetts Financial Services Co172,856$4.29M0.00%−3,360−1.9%Reduced
Public Employees Retirement System of Ohio198,390$4.92M0.02%+36,772+22.8%Added
FMR LLC199,486$4.95M0.00%−18,328−8.4%Reduced
Deutsche Bank AG212,619$5.27M0.00%+124,267+140.6%Added
Renaissance Technologies LLC213,300$5.29M0.01%+213,300New
American International Group, Inc.222,727$5.52M0.03%−4,573−2.0%Reduced
Alliancebernstein L.P.224,895$5.58M0.00%−9,748−4.2%Reduced
Swiss National Bank242,800$6.02M0.00%00.0%Unchanged
Analog Century Management LP255,306$6.33M1.72%−55,300−17.8%Reduced
Wells Fargo & Company261,176$6.47M0.00%−41,953−13.8%Reduced
Janus Henderson Group PLC268,888$6.67M0.00%+30,707+12.9%Added
American Century Companies Inc302,438$7.50M0.00%+75,772+33.4%Added
Rhumbline Advisers308,181$7.64M0.01%−2,311−0.7%Reduced
Principal Financial Group Inc344,609$8.54M0.01%−181,978−34.6%Reduced
Arrowstreet Capital, Limited Partnership358,162$8.88M0.01%−661,802−64.9%Reduced
Divisar Capital Management LLC427,640$10.6M3.42%+22,640+5.6%Added
Allianz Asset Management GmbH430,323$10.7M0.01%−49,488−10.3%Reduced
Millennium Management LLC490,037$12.1M0.01%+430,498+723.1%Added
Panagora Asset Management Inc496,443$12.3M0.07%−36,839−6.9%Reduced
Parametric Portfolio Associates LLC527,377$13.1M0.01%+21,019+4.2%Added
Morgan Stanley543,517$13.5M0.00%−194,226−26.3%Reduced
Goldman Sachs Group Inc549,947$13.6M0.00%−18,377−3.2%Reduced
Bank of America Corp561,811$13.9M0.00%+61,381+12.3%Added
Prudential Financial Inc580,301$14.4M0.02%−255,819−30.6%Reduced
Nuveen Asset Management, LLC709,005$15.6M0.00%−623,363−46.8%Reduced
First Trust Advisors LP631,155$15.6M0.02%+90,557+16.8%Added
Ameriprise Financial Inc697,179$17.3M0.00%+435,156+166.1%Added
JPMorgan Chase & Co707,257$17.5M0.00%+87,282+14.1%Added
Norges Bank742,724$18.4M0.00%+16,900+2.3%Added
Royce & Associates LP1,052,412$26.1M0.19%+103,081+10.9%Added
FIFTHDELTA Ltd1,114,700$27.6M3.69%+1,114,700New
Charles Schwab Investment Management Inc1,207,819$29.9M0.01%−15,568−1.3%Reduced
Bank of New York Mellon Corp1,323,291$32.8M0.01%−74,197−5.3%Reduced
AQR Capital Management LLC1,419,102$35.2M0.06%+326,029+29.8%Added
Invesco Ltd.1,513,636$37.5M0.01%+146,019+10.7%Added
Bandera Partners LLC1,580,000$39.2M14.00%00.0%Unchanged
Geode Capital Management, LLC1,962,395$48.6M0.01%−30,412−1.5%Reduced
Northern Trust Corp1,988,051$49.3M0.01%−33,072−1.6%Reduced
SW Investment Management LLC2,750,000$68.2M23.20%+350,000+14.6%Added
State Street Corp3,248,355$80.5M0.00%+23,500+0.7%Added
Westwood Holdings Group Inc.3,966,673$98.3M0.88%+714,990+22.0%Added
Fuller & Thaler Asset Management, Inc.5,168,786$128.1M0.74%+106,253+2.1%Added
LSV Asset Management7,468,401$185.1M0.33%+18,749+0.3%Added
BlackRock Inc.11,709,418$290.3M0.01%+408,459+3.6%Added
Vanguard Group Inc11,869,313$294.2M0.01%+11,551+0.1%Added
Dimensional Fund Advisors LP15,416,372$382.2M0.12%−512,646−3.2%Reduced
Force Hill Capital Management LP0$00.00%−206,800−100.0%Sold out
Beacon Harbor Wealth Advisors, Inc.0$00.00%−170,984−100.0%Sold out
Two Sigma Advisers, LP0$00.00%−113,185−100.0%Sold out
Tudor Investment Corp Et Al0$00.00%−78,452−100.0%Sold out
Voloridge Investment Management, LLC0$00.00%−63,827−100.0%Sold out
Twinbeech Capital LP0$00.00%−55,262−100.0%Sold out
Engineers Gate Manager LP0$00.00%−51,797−100.0%Sold out
ExodusPoint Capital Management, LP0$00.00%−44,027−100.0%Sold out
Ibex Investors LLC0$00.00%−33,333−100.0%Sold out
Stifel Financial Corp0$00.00%−20,650−100.0%Sold out
Sawgrass Asset Management LLC0$00.00%−17,220−100.0%Sold out
Y-Intercept (Hong Kong) Ltd0$00.00%−15,706−100.0%Sold out
Dorsey Wright & Associates0$00.00%−15,076−100.0%Sold out
Centiva Capital, LP0$00.00%−13,551−100.0%Sold out
Cambria Investment Management, L.P.0$00.00%−10,965−100.0%Sold out
Ontario Teachers Pension Plan Board0$00.00%−10,861−100.0%Sold out
Marshall Wace, LLP0$00.00%−10,528−100.0%Sold out
Two Sigma Investments, LP0$00.00%−10,492−100.0%Sold out
Meeder Asset Management Inc0$00.00%−9,826−100.0%Sold out
Quantitative Investment Management, LLC0$00.00%−9,799−100.0%Sold out
Virtu Financial LLC0$00.00%−9,719−100.0%Sold out
Stratos Wealth Partners, LTD.0$00.00%−9,200−100.0%Sold out
Fox Run Management, L.L.C.0$00.00%−8,612−100.0%Sold out
Boston Private Wealth LLC0$00.00%−8,475−100.0%Sold out
Stokes Family Office, LLC0$00.00%−8,187−100.0%Sold out
Campbell & CO Investment Adviser LLC0$00.00%−8,021−100.0%Sold out
Maverick Capital LtdSuperinvestorMaverick Capital0$00.00%−6,276−100.0%Sold out