AMKOR TECHNOLOGY INC (AMKR) Institutional Shareholders
AMKOR TECHNOLOGY INC (AMKR) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $5.08B in AMKR holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of AMKR tracked by InsiderSet, reporting ownership valued at approximately $583.98M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $659.33M, representing an estimated gain of +12.90% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 51% of the total disclosed AMKR value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Dimensional Fund Advisors Lp, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in AMKOR TECHNOLOGY INC (AMKR).
This page ranks the largest institutional AMKR shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
564
Total Reported Value
$5.08B
Largest Holder
Blackrock, Inc.
Largest Position
$583.98M
Insider Transactions (90d)
19
Latest Filing Quarter
Q2 2026
New Institutional Positions
108
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 12,968,765 | $583,983,481 | $659,332,013 | +$75,348,532 | +12.90% | |
| Dimensional Fund Advisors Lp | 0.10% | 10,991,469 | $494,879,378 | $558,806,284 | +$63,926,906 | +12.92% | |
| Vanguard Portfolio Management Llc | 0.02% | 9,095,848 | $409,586,035 | $462,432,912 | +$52,846,877 | +12.90% | |
| Vanguard Capital Management Llc | 0.01% | 5,434,318 | $244,707,340 | $276,280,727 | +$31,573,387 | +12.90% | |
| State Street Corp | 0.01% | 3,628,542 | $163,393,246 | $184,475,075 | +$21,081,829 | +12.90% | |
| Earnest Partners Llc | 0.64% | 3,431,843 | $154,535,890 | $174,474,898 | +$19,939,008 | +12.90% | |
| Aqr Capital Management Llc | 0.06% | 3,242,130 | $141,421,703 | $164,829,889 | +$23,408,186 | +16.55% | |
| Point72 Asset Management, L.P. | 0.23% | 2,993,434 | $134,794,333 | $152,186,185 | +$17,391,852 | +12.90% | |
| Geode Capital Management, Llc | 0.01% | 2,730,508 | $122,976,233 | $138,819,027 | +$15,842,794 | +12.88% | |
| American Century Companies Inc | 0.06% | 2,713,260 | $122,178,143 | $137,942,138 | +$15,763,995 | +12.90% | |
| Principal Financial Group Inc | 0.06% | 2,622,744 | $118,107,208 | $133,340,305 | +$15,233,097 | +12.90% | |
| Jane Street Group, Llc | 0.11% | 2,329,820 | $104,911,795 | $118,448,049 | +$13,536,254 | +12.90% | |
| Charles Schwab Investment Management Inc | 0.01% | 2,101,538 | $94,632,256 | $106,842,192 | +$12,209,936 | +12.90% | |
| Fisher Asset Management, Llc | 0.03% | 2,010,982 | $90,554,535 | $102,238,325 | +$11,683,790 | +12.90% | |
| Invesco Ltd. | 0.01% | 1,889,405 | $85,079,908 | $96,057,350 | +$10,977,442 | +12.90% | |
| First Trust Advisors Lp | 0.06% | 1,793,537 | $80,762,846 | $91,183,421 | +$10,420,575 | +12.90% | |
| Bridgewater Associates, Lp | 0.32% | 1,580,929 | $71,189,233 | $80,374,430 | +$9,185,197 | +12.90% | |
| D. E. Shaw & Co., Inc. | 0.05% | 1,488,765 | $67,039,088 | $75,688,813 | +$8,649,725 | +12.90% | |
| Allianz Asset Management Gmbh | 0.07% | 1,384,433 | $62,341,017 | $70,384,574 | +$8,043,557 | +12.90% | |
| Morgan Stanley | 0.00% | 1,372,808 | $61,817,646 | $69,793,559 | +$7,975,913 | +12.90% | |
| Two Sigma Investments, Lp | 0.05% | 1,213,894 | $54,661,647 | $61,714,371 | +$7,052,724 | +12.90% | |
| Ubs Group Ag | 0.01% | 1,137,297 | $51,212,483 | $57,820,179 | +$6,607,696 | +12.90% | |
| Gotham Asset Management, Llc | 0.15% | 1,073,270 | $48,329,348 | $54,565,047 | +$6,235,699 | +12.90% | |
| Trexquant Investment Lp | 0.35% | 1,066,184 | $48,010,266 | $54,204,795 | +$6,194,529 | +12.90% | |
| Voloridge Investment Management, Llc | 0.19% | 1,061,839 | $47,814,610 | $53,983,895 | +$6,169,285 | +12.90% | |
| Bank Of New York Mellon Corp | 0.01% | 983,987 | $44,308,947 | $50,025,899 | +$5,716,952 | +12.90% | |
| Squarepoint Ops Llc | 0.09% | 966,791 | $43,534,599 | $49,151,654 | +$5,617,055 | +12.90% | |
| Northern Trust Corp | 0.01% | 943,843 | $42,501,249 | $47,984,978 | +$5,483,729 | +12.90% | |
| Sw Investment Management Llc | 8.99% | 900,000 | $40,527,000 | $45,756,000 | +$5,229,000 | +12.90% | |
| Goldman Sachs Group Inc | 0.01% | 856,927 | $38,587,432 | $43,566,169 | +$4,978,737 | +12.90% | |
| Lpl Financial Llc | 0.01% | 848,249 | $38,196,661 | $43,124,979 | +$4,928,318 | +12.90% | |
| Burkehill Global Management, Lp | 1.79% | 800,000 | $36,024,000 | $40,672,000 | +$4,648,000 | +12.90% | |
| Millennium Management Llc | 0.03% | 773,243 | $34,819,132 | $39,311,674 | +$4,492,542 | +12.90% | |
| Envestnet Asset Management Inc | 0.01% | 741,052 | $33,369,553 | $37,675,084 | +$4,305,531 | +12.90% | |
| Vanguard Fiduciary Trust Co | 0.01% | 716,727 | $32,274,217 | $36,438,401 | +$4,164,184 | +12.90% | |
| Bandera Partners Llc | 14.13% | 693,519 | $31,229,161 | $35,258,506 | +$4,029,345 | +12.90% | |
| Nuveen, Llc | 0.01% | 678,235 | $30,540,922 | $34,481,467 | +$3,940,545 | +12.90% | |
| Raymond James Financial Inc | 0.01% | 516,923 | $23,277,004 | $26,280,365 | +$3,003,361 | +12.90% | |
| Wells Fargo & Company/Mn | 0.00% | 478,466 | $21,545,304 | $24,325,211 | +$2,779,907 | +12.90% | |
| Man Group Plc | 0.04% | 469,338 | $21,134,290 | $23,861,144 | +$2,726,854 | +12.90% | |
| Light Street Capital Management, Llc | 3.69% | 406,990 | $18,326,760 | $20,691,372 | +$2,364,612 | +12.90% | |
| Baird Financial Group, Inc. | 0.03% | 403,777 | $18,182,078 | $20,528,023 | +$2,345,945 | +12.90% | |
| Sei Investments Co | 0.02% | 401,815 | $18,095,462 | $20,428,275 | +$2,332,813 | +12.89% | |
| Russell Investments Group, Ltd. | 0.02% | 400,134 | $17,955,961 | $20,342,813 | +$2,386,852 | +13.29% | |
| Massachusetts Financial Services Co | 0.01% | 366,793 | $16,516,689 | $18,647,756 | +$2,131,067 | +12.90% | |
| Qube Research & Technologies Ltd | 0.02% | 362,137 | $16,307,029 | $18,411,045 | +$2,104,016 | +12.90% | |
| Allspring Global Investments Holdings, Llc | 0.03% | 332,900 | $15,476,521 | $16,924,636 | +$1,448,115 | +9.36% | |
| Segall Bryant & Hamill, Llc | 0.24% | 339,269 | $14,900,676 | $17,248,436 | +$2,347,760 | +15.76% | |
| Rhumbline Advisers | 0.01% | 314,616 | $14,167,120 | $15,995,077 | +$1,827,957 | +12.90% | |
| Covea Finance | 0.44% | 162,655 | $14,025,741 | $8,269,380 | -$5,756,361 | -41.04% |
Frequently asked questions about AMKR
Who owns the most AMKR stock?
The largest holders of AMKR are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for AMKOR TECHNOLOGY INC (AMKR).
Is AMKR widely held by superinvestors?
Many widely followed stocks like AMKR appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly AMKR is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.