AMKOR TECHNOLOGY, INC. - Common Stock, par value $0.001 per share (AMKR) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock, par value $0.001 per share
Symbol
AMKR on Nasdaq
Shares outstanding
247,278,223
Price per share
$39.48
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
107,549,743
Total reported value
$3,055,128,034
% of total 13F portfolios
0%
Share change
-5,308,366
Value change
-$125,208,861
Number of holders
374
Price from insider filings
$39.48
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of AMKOR TECHNOLOGY, INC. - Common Stock, par value $0.001 per share (AMKR) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
KIM JAMES J 34% $1,456,656,662 83,332,761 John T. Kim 14 May 2025

As of 30 Sep 2025, 374 institutional investors reported holding 107,549,743 shares of AMKOR TECHNOLOGY, INC. - Common Stock, par value $0.001 per share (AMKR). This represents 43% of the company’s total 247,278,223 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of AMKOR TECHNOLOGY, INC. - Common Stock, par value $0.001 per share (AMKR) together control 35% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
VANGUARD GROUP INC 6.4% 15,779,847 +4.6% 0.01% $448,147,655
BlackRock, Inc. 5.6% 13,834,810 -7.2% 0.01% $392,908,605
DIMENSIONAL FUND ADVISORS LP 5.3% 13,151,210 -0.95% 0.08% $373,495,243
AQR CAPITAL MANAGEMENT LLC 1.7% 4,211,529 +18% 0.08% $119,607,434
EARNEST PARTNERS LLC 1.7% 4,206,353 -4.9% 0.52% $119,460,425
LSV ASSET MANAGEMENT 1.6% 3,981,356 -18% 0.25% $113,071,000
AMERICAN CENTURY COMPANIES INC 1.6% 3,835,987 +0.46% 0.06% $108,942,078
STATE STREET CORP 1.4% 3,426,411 +3.2% 0% $97,310,072
SW Investment Management LLC 1.1% 2,650,000 0% 16% $75,260,000
GEODE CAPITAL MANAGEMENT, LLC 0.92% 2,279,431 +1.1% 0% $64,746,892
PRINCIPAL FINANCIAL GROUP INC 0.92% 2,268,840 -2.7% 0.03% $64,435,247
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.89% 2,195,166 +1.9% 0.01% $62,342,714
FIRST TRUST ADVISORS LP 0.8% 1,981,609 +18% 0.04% $56,277,484
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.64% 1,574,607 +306% 0.03% $44,718,839
MORGAN STANLEY 0.59% 1,466,387 +12% 0% $41,645,444
Gotham Asset Management, LLC 0.57% 1,413,719 +6.8% 0.17% $40,149,620
Bank of New York Mellon Corp 0.54% 1,343,819 -21% 0.01% $38,164,453
FMR LLC 0.52% 1,285,635 -0.11% 0% $36,512,036
Invesco Ltd. 0.5% 1,229,931 +134% 0.01% $34,930,041
NORTHERN TRUST CORP 0.37% 914,872 -1.1% 0% $25,982,365
Bandera Partners LLC 0.31% 773,493 0% 9.6% $21,967,201
ENVESTNET ASSET MANAGEMENT INC 0.31% 769,803 -1.3% 0.01% $21,862,397
MILLENNIUM MANAGEMENT LLC 0.3% 740,406 -44% 0.02% $21,027,530
Nuveen, LLC 0.3% 735,667 +249% 0.01% $20,892,943
Fisher Asset Management, LLC 0.28% 687,918 +11% 0.01% $19,536,870

Institutional Holders of AMKOR TECHNOLOGY, INC. - Common Stock, par value $0.001 per share (AMKR) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 971,409 $39,190,249 +$32,146,005 $39.48 22
2025 Q3 107,549,743 $3,055,128,034 -$125,208,861 $28.40 374
2025 Q2 113,048,162 $2,373,273,979 +$114,953,962 $20.99 342
2025 Q1 108,040,907 $1,951,026,308 -$73,920,018 $18.06 342
2024 Q4 109,268,438 $2,808,251,495 +$48,269,580 $25.69 329
2024 Q3 106,546,220 $3,260,732,392 -$13,756,975 $30.60 355
2024 Q2 105,697,517 $4,229,651,116 +$5,014,289 $40.02 390
2024 Q1 105,879,554 $3,413,107,862 +$20,011,006 $32.24 334
2023 Q4 105,124,159 $3,497,270,269 +$89,633,171 $33.27 313
2023 Q3 103,279,977 $2,334,355,321 +$143,785,224 $22.60 302
2023 Q2 96,176,374 $2,860,531,372 +$59,728,154 $29.75 296
2023 Q1 94,043,251 $2,446,697,086 -$4,834,836 $26.02 288
2022 Q4 94,611,993 $2,268,275,281 +$15,076,608 $23.98 286
2022 Q3 94,297,197 $1,607,072,114 -$14,343,196 $17.05 256
2022 Q2 95,047,466 $1,610,443,259 +$20,533,305 $16.95 249
2022 Q1 94,191,158 $2,046,902,897 -$7,662,310 $21.72 269
2021 Q4 94,202,670 $2,333,010,085 -$26,740,663 $24.79 262
2021 Q3 94,042,864 $2,349,598,089 +$12,351,091 $24.95 259
2021 Q2 93,795,445 $2,220,006,298 -$50,219,832 $23.67 248
2021 Q1 95,959,772 $2,276,575,528 +$109,696,190 $23.71 251
2020 Q4 93,431,334 $1,410,249,949 -$1,448,670 $15.08 218
2020 Q3 93,110,951 $1,043,074,900 -$30,643,497 $11.20 208
2020 Q2 95,773,944 $1,178,959,300 +$41,595,176 $12.31 199
2020 Q1 93,315,283 $726,805,605 -$25,793,054 $7.79 196
2019 Q4 95,106,428 $1,236,337,028 +$70,969,734 $13.00 191
2019 Q3 90,100,982 $819,861,307 -$18,035,237 $9.10 167
2019 Q2 92,211,747 $687,729,543 -$6,029,029 $7.46 154
2019 Q1 93,377,355 $797,426,735 +$15,412,646 $8.54 166
2018 Q4 92,110,567 $604,229,570 -$13,247,100 $6.56 160
2018 Q3 93,818,403 $693,313,737 +$3,464,615 $7.39 161
2018 Q2 91,327,570 $784,511,472 -$51,985,796 $8.59 146
2018 Q1 98,558,061 $998,425,994 +$30,065,545 $10.13 165
2017 Q4 96,328,845 $968,141,777 -$4,609,224 $10.05 173
2017 Q3 96,461,556 $1,018,108,478 +$7,457,944 $10.55 151
2017 Q2 96,012,376 $938,056,331 +$14,785,532 $9.77 155
2017 Q1 93,822,303 $1,087,392,791 +$157,318,915 $11.59 163
2016 Q4 88,933,959 $938,638,626 +$78,642,402 $10.55 182
2016 Q3 79,875,126 $775,758,499 +$41,892,354 $9.72 163
2016 Q2 76,660,728 $440,785,255 -$14,758,781 $5.75 136
2016 Q1 78,692,198 $463,441,983 +$3,770,347 $5.89 128
2015 Q4 78,193,477 $475,528,294 +$7,505,127 $6.08 152
2015 Q3 76,688,810 $344,321,523 -$22,031,053 $4.49 139
2015 Q2 81,044,949 $484,658,805 +$498,394 $5.98 157
2015 Q1 78,939,268 $697,365,584 +$15,601,418 $8.84 183
2014 Q4 78,971,950 $560,447,211 -$30,846,213 $7.10 168
2014 Q3 81,616,533 $686,494,432 -$7,257,103 $8.41 188
2014 Q2 82,136,017 $915,847,995 +$173,266,265 $11.18 180
2014 Q1 69,388,399 $476,370,052 +$2,157,653 $6.86 136