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
107,598,565
Total reported value
$3,056,515,034
% of total 13F portfolios
0%
Share change
-5,305,284
Value change
-$125,118,956
Number of holders
375
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, 375 institutional investors reported holding 107,598,565 shares of AMKOR TECHNOLOGY, INC. - Common Stock, par value $0.001 per share (AMKR). This represents 44% 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 2,041,515 $82,353,746 +$37,259,417 $39.48 52
2025 Q3 107,598,565 $3,056,515,034 -$125,118,956 $28.40 375
2025 Q2 113,048,652 $2,373,310,056 +$114,830,462 $20.99 343
2025 Q1 108,040,807 $1,951,024,020 -$73,920,006 $18.06 341
2024 Q4 109,276,292 $2,808,551,924 +$81,287,798 $25.69 328
2024 Q3 105,250,991 $3,221,093,846 -$65,814,413 $30.60 354
2024 Q2 105,693,925 $4,229,524,621 +$42,527,081 $40.02 391
2024 Q1 104,331,166 $3,363,188,264 -$16,310,067 $32.24 331
2023 Q4 42,329 $1,408,286 +$48,075 $33.27 1
2023 Q3 100,857,580 $2,279,602,214 +$138,912,303 $22.60 294
2023 Q2 94,915,192 $2,823,010,186 +$20,086,120 $29.75 291
2023 Q1 93,958,054 $2,444,479,884 -$5,104,532 $26.02 285
2022 Q4 94,556,766 $2,266,950,943 +$15,434,624 $23.98 282
2022 Q3 92,609,414 $1,578,296,229 -$14,154,172 $17.05 251
2022 Q2 94,826,332 $1,605,288,787 +$16,986,291 $16.95 243
2022 Q1 93,733,507 $2,036,960,444 -$1,992,934 $21.72 264
2021 Q4 94,105,887 $2,330,611,085 -$26,653,003 $24.79 260
2021 Q3 94,044,274 $2,349,625,089 +$14,195,955 $24.95 261
2021 Q2 93,738,458 $2,218,657,298 -$49,680,674 $23.67 246
2021 Q1 95,880,029 $2,274,684,044 +$117,468,880 $23.71 249
2020 Q4 90,840,534 $1,371,181,949 -$7,465,405 $15.08 214
2020 Q3 90,949,218 $1,018,863,900 -$32,483,314 $11.20 205
2020 Q2 93,911,419 $1,156,032,300 +$41,953,435 $12.31 197
2020 Q1 87,317,862 $680,340,973 -$31,115,231 $7.79 190
2019 Q4 95,094,152 $1,236,177,607 +$70,158,663 $13.00 189
2019 Q3 89,816,057 $817,270,307 -$13,751,183 $9.10 166
2019 Q2 92,075,630 $686,713,543 +$11,556,837 $7.46 152
2019 Q1 92,324,775 $788,440,735 +$12,135,103 $8.54 163
2018 Q4 91,771,114 $602,003,570 -$7,369,120 $6.56 159
2018 Q3 92,947,708 $686,879,737 -$51,693 $7.39 157
2018 Q2 91,003,309 $781,727,472 -$32,347,366 $8.59 144
2018 Q1 98,558,061 $998,425,994 +$29,938,558 $10.13 165
2017 Q4 96,311,491 $967,967,777 -$4,529,313 $10.05 172
2017 Q3 96,196,139 $1,015,311,478 +$7,773,474 $10.55 150
2017 Q2 96,012,376 $938,056,331 +$14,541,422 $9.77 155
2017 Q1 93,822,303 $1,087,392,791 +$131,914,373 $11.59 163
2016 Q4 87,925,835 $928,002,918 +$78,932,935 $10.55 181
2016 Q3 79,875,126 $775,758,499 +$41,893,047 $9.72 163
2016 Q2 76,660,458 $440,783,255 -$14,759,791 $5.75 135
2016 Q1 75,820,615 $446,528,983 +$6,464,285 $5.89 126
2015 Q4 78,182,966 $475,464,294 +$8,497,734 $6.08 151
2015 Q3 74,989,737 $336,692,523 -$23,466,429 $4.49 135
2015 Q2 76,229,620 $455,870,805 +$7,162,736 $5.98 155
2015 Q1 78,933,646 $697,313,584 +$16,501,713 $8.84 184
2014 Q4 75,555,528 $536,191,211 -$35,366,025 $7.10 166
2014 Q3 81,591,880 $686,287,432 -$7,093,218 $8.41 188
2014 Q2 82,136,017 $915,847,995 +$173,387,895 $11.18 180
2014 Q1 67,809,302 $465,537,052 +$1,084,860 $6.86 135